US20030192688A1 - Tubing saver rotator and method for using same - Google Patents

Tubing saver rotator and method for using same Download PDF

Info

Publication number
US20030192688A1
US20030192688A1 US10/356,750 US35675003A US2003192688A1 US 20030192688 A1 US20030192688 A1 US 20030192688A1 US 35675003 A US35675003 A US 35675003A US 2003192688 A1 US2003192688 A1 US 2003192688A1
Authority
US
United States
Prior art keywords
mandrel
tubing
bowl
recited
rotator assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10/356,750
Inventor
Michael Thomson
Philip Hart
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US10/356,750 priority Critical patent/US20030192688A1/en
Publication of US20030192688A1 publication Critical patent/US20030192688A1/en
Priority to US11/143,027 priority patent/US7448444B2/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/02Surface sealing or packing
    • E21B33/03Well heads; Setting-up thereof
    • E21B33/04Casing heads; Suspending casings or tubings in well heads
    • E21B33/0415Casing heads; Suspending casings or tubings in well heads rotating or floating support for tubing or casing hanger

Definitions

  • This invention relates to a tubing rotator assembly that sits inside a casing head for purposes of suspending and rotating the tubing string in an oil well.
  • a typical wellhead is often comprised of a casing head which engages or is otherwise mounted to a casing string contained within a wellbore of a well at the surface.
  • a mandrel bowl is mounted to the casing head and provides a support mechanism for the tubing string which is contained within the wellbore.
  • the production of fluids from an oil and gas well often involves the use of a downhole pump that can pump fluids to the surface through the tubing string.
  • This downhole pump is often mechanically actuated through the use of a rod string located within the tubing string.
  • the rod string is usually reciprocated up and down at the surface or, rotated at the surface to impart motion on the pump.
  • the reciprocation or rotation of the rod string causes the rods to wear against the tubing, which may cause the tubing string to wear thin and develop a hole in the tubing.
  • This wear action also wipes off chemical inhibitors that may be placed into a well to minimize corrosion of the tubing and rods by the production fluids.
  • the wear action can also lead to tubing holes due to corrosion since the inhibitors are wiped off.
  • the present invention is an apparatus for attachment within an existing casing head or within a casing head modified to accept a bowl or ledge assembly.
  • this apparatus has a bearing in which a tubing mandrel rests and allows one to rotate the tubing manually above the wellhead. It provides a low profile reducing the distance between the casing head and the pumping tee, which may eliminate the need for one to raise the pumping unit to fit on the rotator.
  • the conventional seals located above the bowl assembly have less chance of leaking fluids located between the casing and tubing as a result of the seals installed in the present invention.
  • the conventional rubber element starts to leak, then one can change the sealing elements without having to remove the tubing rotator assembly or tubing string from the well.
  • This invention relates to a tubing rotator assembly that sits in a casing head for purposes of suspending and rotating the tubing string in an oil well.
  • the assembly includes a mandrel bowl or mandrel support that rests in the casing head.
  • the mandrel bowl has an interior ledge with a surface on which a bearing may be placed.
  • a tubing mandrel is partially contained within the interior of the mandrel bowl with one end exiting the bottom of the mandrel bowl and attached to the tubing string in the well, and the opposite end of the tubing mandrel exiting the top of the mandrel bowl.
  • the tubing mandrel has a ledge which is rotatably mounted to the mandrel bowl.
  • Said ledge of the tubing mandrel is supported on the bearing, which bearing rests on the interior ledge of the mandrel bowl.
  • the ledge of the tubing mandrel therefore engages and rotatably rides against the bearing.
  • This arrangement allows the tubing to rotate by rotating the mandrel residing on the bearing disposed on the interior ledge of the mandrel bowl.
  • the top of the tubing mandrel may be connected to a swivel, or be an integral part of the swivel, or connected to a union in such a manner to allow one to rotate the tubing by turning the mandrel and or rotating part of the swivel.
  • Seals are provided (but not necessary) to isolate the interior of the mandrel bowl from fluids from the well or outside the well, thereby preserving any lubrication of the bearings and minimizing corrosion or contamination inside the mandrel bowl area. Seals may also be placed on the outside of the mandrel bowl or bowl plate, or inside the casing head, in order to provide additional sealing of the fluids between the casing and tubing strings.
  • a bowl plate is positioned on top of the mandrel bowl with seals preferred to allow sealing between the bowl plate and the mandrel bowl and also between the bowl plate and the tubing mandrel.
  • tubing rotator assembly to be a self contained unit with connection ends above and below the mandrel bowl to allow connection to the tubing string below the mandrel bowl and connection to a swivel, union, or other material to allow fluids to exit the wellbore from the tubing.
  • FIG. 6 illustrates a front view of a second alternate embodiment of the present invention.
  • FIGS. 1 - 4 illustrate a preferred embodiment of a tubing saver rotator assembly 100 made in accordance with the present invention.
  • the present invention is an apparatus for attachment in an existing casing head or a casing head modified to accept a bowl or ledge assembly.
  • This apparatus having a surface, such as a bearing in which a tubing mandrel rests and allows one to rotate the tubing above the wellhead. It provides a low profile reducing the distance between the casing head and the pumping tee, which may eliminate the need for one to raise the pumping unit to fit on the rotator.
  • the conventional seals above the bowl assembly have less chance of leaking fluids located between the casing and tubing due to the seals potentially installed in the present invention.
  • the present invention includes a pin end projecting upwardly from the mandrel or from the swivel joint. This allows a rig to pick up the mandrel and attach it to the pump tee above the wellhead and to the tubing string below the mandrel by simply screwing on two connections as will be further described.
  • a conventional screwdriver or hex wrench will allow replacement of all the seals in the bowl and tubing mandrel assembly if replacement becomes necessary.
  • sealing elements may be tightened to effect a good seal, or the seal elements may be replaced and tightened without removing the tubing rotator or tubing string with a rig. This provides ease and speed of repair by one person in lieu of a conventional rig job, which may help the environment and lower operating costs.
  • Said mandrel ledge 10 may be supported on the surface of the ledge support 1 A of the mandrel bowl 1 or, as shown in the drawings, may be supported on a bearing 3 , which bearing 3 rests on the ledge support 1 A of the mandrel bowl 1 .
  • the mandrel ledge 10 and the ledge support 1 A therefore captures the bearing 3 therebetween.
  • the mandrel ledge 10 of the tubing mandrel 2 therefore engages and rotatably rides against the bearing 3 .
  • a bowl plate 4 is attached to the mandrel bowl 1 with bowl plate screws 5 selectively located around the bowl plate 4 .
  • a lower interior bowl seal 6 , a bowl plate seal 7 , and a mandrel plate seal 8 prevents fluid from contaminating said bearing 3 .
  • the lower end of the tubing mandrel 2 is attached to the tubing string (not shown) with a lower connection 9 , and the opposite end of the tubing mandrel 2 is attached to a swivel 12 with an upper connection 11 .
  • Said lower and upper connection means 9 , 11 is known in the art.
  • the swivel 12 is attached to an upper end 2 A of the tubing mandrel 2 , which allows a lower part 12 A of the swivel 12 to rotate with the tubing mandrel 2 .
  • An upper part 13 of the swivel 12 may be attached to a stationary pump tee (not shown).
  • a swivel cap 14 connects the lower part 12 A of the swivel 12 to the upper part 13 of the swivel 12 , and seals 15 , 16 , and 21 are provided in the swivel 12 to prevent leakage or entry of fluids from the tubing mandrel 2 or environment.
  • a union (not shown) could be used in lieu of the swivel 12 as well as substitution of other types of mechanisms known in the art to allow rotation or, the tubing mandrel 2 may be attached directly to the pump tee with the pump tee designed to allow some movement or rotation.
  • a rubber or packing element 18 is disposed on top of the bowl plate 4 .
  • a top plate 19 is then disposed on top of the rubber or packing element 18 , said top plate 19 is compressed down to squeeze the rubber element 18 between the top plate 19 and the bowl plate 4 by a casing head dognut 20 .
  • the dognut 20 may be removed to grease the bearing 3 area if desired or to replace the top plate 19 , rubber element 18 , bowl plate 4 , bowl plate screws 5 , bowl plate seal 7 , or mandrel plate seal 8 .
  • This arrangement allows most seals to be easily replaced by one person without removing the tubing mandrel 2 and mandrel bowl 1 which would normally require a rig in prior art designs.
  • the dognut 20 may be tightened down from time to time if any wellbore fluids start to leak out of the casing head 17 or it may be tightened after replacing the rubber element 18 .
  • the seals 6 , 7 , and 8 reduce the chance that the rubber element 18 will leak and thereby provides extra sealing protection.
  • a rubber or packing element 147 is disposed on top of the bowl plate 145 .
  • a top plate 148 is then disposed on top of the rubber or packing element 147 , said top plate 148 is compressed down to squeeze the rubber element 147 between the top plate 148 and the bowl plate 145 by a casing head dognut 149 .
  • the casing head dognut 149 may be removed to grease the bearing 140 area if desired or to replace the top plate 148 , rubber element 147 , bowl plate 145 , bowl plate screws 115 , bowl plate seal 118 , or mandrel plate seal 119 .
  • thread means 149 A attaches the dognut 149 to the flange connection 120 as shown in FIG. 6, however other similar attaching means known in the art including flange means may be used.
  • the seals 116 , 118 , and 119 reduce the chance that the rubber element 147 will leak and therefore provides extra sealing protection for emissions or entry of outside fluids into the wellhead.

Abstract

The present invention relates to a tubing rotator assembly for attachment to an existing casing head for purposes of suspending and rotating a tubing string in an oil well. In the preferred embodiment, the tubing assembly includes a rotation surface, such as a bearing, in which a tubing mandrel rests and allows one to rotate the tubing manually above the wellhead. It provides a low profile reducing the distance between the casing head and the pumping tee, which may eliminate the need for one to raise the pumping unit to fit on the rotator. In addition, the conventional seals above the rotation surface have less chance of leaking fluids located between the casing and tubing due to the seals potentially installed in the present invention. In addition, if the conventional seals do start to leak, then one can change the packing rubber without having to remove the tubing rotator assembly or tubing string (thus, not requiring a rig to change the sealing elements). The tubing assembly includes a mandrel bowl that rests inside the casing head. The mandrel bowl has an interior ledge in which the bearing may be placed on top of the ledge. A tubing mandrel is partially contained within the interior of the mandrel bowl with one end exiting the bottom of the bowl and attached to the tubing string in the well, and the opposite end of the tubing mandrel exiting the top of the bowl. The tubing mandrel has a ledge which is rotatably mounted to the mandrel bowl. Said ledge of the tubing mandrel is supported on the bearing, which bearing rests on the interior ledge of the mandrel bowl. The ledge of the tubing mandrel therefore engages and rotatably rides against the bearing. This arrangement allows the tubing to rotate by rotating the tubing mandrel resting on the bearing located inside the mandrel bowl.

Description

    CROSS REFERENCES TO RELATED APPLICATIONS
  • U.S. Provisional Application for Patent No. 60/371,393, filed Apr. 10, 2002, with title “Tubing Saver Rotator and Method For Using Same” which is hereby incorporated by reference. Applicant claims priority pursuant to 35 U.S.C. Par. 119(e)(i).[0001]
  • STATEMENT AS TO RIGHTS TO INVENTIONS MADE UNDER FEDERALLY SPONSORED RESEARCH AND DEVELOPMENT
  • Not Applicable [0002]
  • BACKGROUND OF THE INVENTION
  • 1. Field of the Invention [0003]
  • This invention relates to a tubing rotator assembly that sits inside a casing head for purposes of suspending and rotating the tubing string in an oil well. [0004]
  • 2. Brief Description of Prior Art [0005]
  • A typical wellhead is often comprised of a casing head which engages or is otherwise mounted to a casing string contained within a wellbore of a well at the surface. A mandrel bowl is mounted to the casing head and provides a support mechanism for the tubing string which is contained within the wellbore. [0006]
  • The production of fluids from an oil and gas well often involves the use of a downhole pump that can pump fluids to the surface through the tubing string. This downhole pump is often mechanically actuated through the use of a rod string located within the tubing string. The rod string is usually reciprocated up and down at the surface or, rotated at the surface to impart motion on the pump. The reciprocation or rotation of the rod string causes the rods to wear against the tubing, which may cause the tubing string to wear thin and develop a hole in the tubing. This wear action also wipes off chemical inhibitors that may be placed into a well to minimize corrosion of the tubing and rods by the production fluids. Thus, the wear action can also lead to tubing holes due to corrosion since the inhibitors are wiped off. These wear related holes in the tubing causes inefficient lift or no lift of the fluids to the surface and typically requires a rig to service the well. Reducing the failure frequency of the tubing strings will not only reduce operating costs but also will allow additional oil to be developed by reducing the economic production rate limit of each well. [0007]
  • Since 1927, several patents have been obtained on variations to tubing rotators that generally rotate the tubing manually or automatically to attempt to reduce the frequency of tubing holes developed due to the wearing action of the rods. Conventional casing heads are not typically able to be retrofitted to accommodate the necessary structure of a tubing rotator. Further, the tubing rotators of the prior art typically use gears and drive assembly to rotate the tubing. As a result, a housing is normally required to be attached above the casing head to provide room for the gearing and allow a rod to exit the tubing rotators of the prior art to allow manual rotation or automatic/continuous rotation of the tubing string. [0008]
  • These prior art designs therefore often include several seals to seal off the rod attached to the gears, seal the fluids between the casing and tubing, and further seal fluids produced up the tubing from exiting the tubing string into the atmosphere, ground, or annulus between the tubing and casing. The rotators with continuous rotation commonly have more corrosion holes due to wear than a manual or intermittent rotator, and fail when a gear mechanism fails and may damage the rotator or wellhead assembly due to the torque imparted on the gears. In addition, the positioning of a housing on top of the casing head is more costly and may involve the need to raise the pumping unit due to large spacing requirements between the casing head and the pump tee. [0009]
  • As will be seen from the subsequent description, the preferred embodiments of the present invention overcome these and other shortcomings of prior art. [0010]
  • There is need for a compact tubing rotator that may be operated manually, reduces the height clearance between the casing head and the pump tee, is inexpensive, has minimal seals to potentially fail and leak fluids, provides for replacement of rubbers or seals that protect the atmosphere and environment from leaking fluids without removing the tubing rotator or tubing string from the well, provides additional seals to minimize or stop contamination of the grease packed bearing housing from wellbore or external fluids, utilizes commonly available equipment to reduce costs of repairs, and provides ease of installation and use. [0011]
  • The present invention is an apparatus for attachment within an existing casing head or within a casing head modified to accept a bowl or ledge assembly. In the preferred embodiment, this apparatus has a bearing in which a tubing mandrel rests and allows one to rotate the tubing manually above the wellhead. It provides a low profile reducing the distance between the casing head and the pumping tee, which may eliminate the need for one to raise the pumping unit to fit on the rotator. In addition, the conventional seals located above the bowl assembly have less chance of leaking fluids located between the casing and tubing as a result of the seals installed in the present invention. In addition, if the conventional rubber element starts to leak, then one can change the sealing elements without having to remove the tubing rotator assembly or tubing string from the well. [0012]
  • SUMMARY OF THE INVENTION
  • This invention relates to a tubing rotator assembly that sits in a casing head for purposes of suspending and rotating the tubing string in an oil well. The assembly includes a mandrel bowl or mandrel support that rests in the casing head. The mandrel bowl has an interior ledge with a surface on which a bearing may be placed. A tubing mandrel is partially contained within the interior of the mandrel bowl with one end exiting the bottom of the mandrel bowl and attached to the tubing string in the well, and the opposite end of the tubing mandrel exiting the top of the mandrel bowl. The tubing mandrel has a ledge which is rotatably mounted to the mandrel bowl. Said ledge of the tubing mandrel is supported on the bearing, which bearing rests on the interior ledge of the mandrel bowl. The ledge of the tubing mandrel therefore engages and rotatably rides against the bearing. This arrangement allows the tubing to rotate by rotating the mandrel residing on the bearing disposed on the interior ledge of the mandrel bowl. The top of the tubing mandrel may be connected to a swivel, or be an integral part of the swivel, or connected to a union in such a manner to allow one to rotate the tubing by turning the mandrel and or rotating part of the swivel. Normally, one would use a handle or pipe wrench to manually turn the mandrel or swivel or union that extends above the wellhead or, a device known in the art may be applied to automatically turn the mandrel or swivel or union.. [0013]
  • Seals are provided (but not necessary) to isolate the interior of the mandrel bowl from fluids from the well or outside the well, thereby preserving any lubrication of the bearings and minimizing corrosion or contamination inside the mandrel bowl area. Seals may also be placed on the outside of the mandrel bowl or bowl plate, or inside the casing head, in order to provide additional sealing of the fluids between the casing and tubing strings. A bowl plate is positioned on top of the mandrel bowl with seals preferred to allow sealing between the bowl plate and the mandrel bowl and also between the bowl plate and the tubing mandrel. This allows the tubing rotator assembly to be a self contained unit with connection ends above and below the mandrel bowl to allow connection to the tubing string below the mandrel bowl and connection to a swivel, union, or other material to allow fluids to exit the wellbore from the tubing. [0014]
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a front view of a preferred embodiment of the present invention, a tubing saver rotator. [0015]
  • FIGS. [0016] 2-4 are front views of the tubing rotator saver of FIG. 1 without the standard equipment generally found on wellheads.
  • FIG. 5 illustrates a front view of an alternate embodiment of the present invention. [0017]
  • FIG. 6 illustrates a front view of a second alternate embodiment of the present invention.[0018]
  • DESCRIPTION OF THE PREFERRED EMBODIMENT
  • FIGS. [0019] 1-4 illustrate a preferred embodiment of a tubing saver rotator assembly 100 made in accordance with the present invention. Generally, the present invention is an apparatus for attachment in an existing casing head or a casing head modified to accept a bowl or ledge assembly. This apparatus having a surface, such as a bearing in which a tubing mandrel rests and allows one to rotate the tubing above the wellhead. It provides a low profile reducing the distance between the casing head and the pumping tee, which may eliminate the need for one to raise the pumping unit to fit on the rotator. In addition, the conventional seals above the bowl assembly have less chance of leaking fluids located between the casing and tubing due to the seals potentially installed in the present invention. In addition, if the conventional seals do start to leak, one can change the sealing elements without having to remove the tubing rotator assembly 100 or tubing string (not shown) from the well. In the preferred embodiment, the present invention includes a pin end projecting upwardly from the mandrel or from the swivel joint. This allows a rig to pick up the mandrel and attach it to the pump tee above the wellhead and to the tubing string below the mandrel by simply screwing on two connections as will be further described. A conventional screwdriver or hex wrench will allow replacement of all the seals in the bowl and tubing mandrel assembly if replacement becomes necessary. If the fluids between the casing head and tubing string start to leak around the wellhead, sealing elements may be tightened to effect a good seal, or the seal elements may be replaced and tightened without removing the tubing rotator or tubing string with a rig. This provides ease and speed of repair by one person in lieu of a conventional rig job, which may help the environment and lower operating costs.
  • Referring to FIG. 1, the tubing [0020] saver rotator assembly 100 includes a mandrel bowl 1 having a ledge support 1A, said mandrel bowl 1 positioned on an interior lip 17A within a casing head 17. A tubing mandrel 2 having an extending mandrel ledge 10 is rotatably mounted to the mandrel bowl 1. In the preferred embodiment, said mandrel ledge 10 of the tubing mandrel 2 is substantially perpendicular to the length of the tubing mandrel 2 however, it is understood that the mandrel ledge 10 may be disposed at other angles in relationship to the tubing mandrel 2 and achieve the objectives described herein.
  • Said [0021] mandrel ledge 10 may be supported on the surface of the ledge support 1A of the mandrel bowl 1 or, as shown in the drawings, may be supported on a bearing 3, which bearing 3 rests on the ledge support 1A of the mandrel bowl 1. The mandrel ledge 10 and the ledge support 1A therefore captures the bearing 3 therebetween. The mandrel ledge 10 of the tubing mandrel 2 therefore engages and rotatably rides against the bearing 3. A bowl plate 4 is attached to the mandrel bowl 1 with bowl plate screws 5 selectively located around the bowl plate 4. A lower interior bowl seal 6, a bowl plate seal 7, and a mandrel plate seal 8 prevents fluid from contaminating said bearing 3.
  • The lower end of the [0022] tubing mandrel 2 is attached to the tubing string (not shown) with a lower connection 9, and the opposite end of the tubing mandrel 2 is attached to a swivel 12 with an upper connection 11. Said lower and upper connection means 9, 11, is known in the art. As shown in FIG. 1, the swivel 12 is attached to an upper end 2A of the tubing mandrel 2, which allows a lower part 12A of the swivel 12 to rotate with the tubing mandrel 2. An upper part 13 of the swivel 12 may be attached to a stationary pump tee (not shown). A swivel cap 14 connects the lower part 12A of the swivel 12 to the upper part 13 of the swivel 12, and seals 15, 16, and 21 are provided in the swivel 12 to prevent leakage or entry of fluids from the tubing mandrel 2 or environment. A union (not shown) could be used in lieu of the swivel 12 as well as substitution of other types of mechanisms known in the art to allow rotation or, the tubing mandrel 2 may be attached directly to the pump tee with the pump tee designed to allow some movement or rotation.
  • A rubber or packing [0023] element 18 is disposed on top of the bowl plate 4. A top plate 19 is then disposed on top of the rubber or packing element 18, said top plate 19 is compressed down to squeeze the rubber element 18 between the top plate 19 and the bowl plate 4 by a casing head dognut 20. The dognut 20 may be removed to grease the bearing 3 area if desired or to replace the top plate 19, rubber element 18, bowl plate 4, bowl plate screws 5, bowl plate seal 7, or mandrel plate seal 8. This arrangement allows most seals to be easily replaced by one person without removing the tubing mandrel 2 and mandrel bowl 1 which would normally require a rig in prior art designs. The dognut 20 may be tightened down from time to time if any wellbore fluids start to leak out of the casing head 17 or it may be tightened after replacing the rubber element 18. The seals 6, 7, and 8 reduce the chance that the rubber element 18 will leak and thereby provides extra sealing protection.
  • FIG. 2 illustrates the [0024] rotator assembly 100 shown in FIG. 1 without the standard equipment normally on certain wellheads. Thus a rig only needs to pick up the entire pre-assembled rotator assembly 100 and stab the bottom pin into the tubing string, lower the mandrel bowl 1 into the well with the rig, and then attach the swivel and/or pump tee (depending on if the rig desired to install the swivel separately or as one piece). The bowl 1 may then be packed off in the wellhead with the plates and rubber element that are standard equipment for that wellhead.
  • Various options may be chosen to enhance or reduce the cost of the [0025] rotator assembly 100. For example, the seals 6, 7, and 8 may be eliminated, however fluids may enter the bearing 3 area during installation or operation of the oil and gas well. Seals or packing could also be used between the mandrel bowl 1 and casing head 17 to provide extra backup seals or eliminate the need for the bowl plate seal 7. If care is taken during installation, the mandrel plate seal 8 may be eliminated if the rubber element 18 is providing a good seal. In addition, the mandrel plate seal 8 may be replaced with a seal between the outer diameter of the mandrel ledge 10 and the mandrel bowl 1, a seal between the tubing mandrel 2 and the inner diameter of the bowl plate 4, and/or a seal between the top plate 19 and the tubing mandrel 2. In addition, seals may be used between the bowl plate 4 and the casing head 17, or between the top plate 19 and the casing head 17, in order to provide additional backup seals, or to eliminate the rubber element 18.
  • FIG. 5 illustrates an alternate embodiment of a [0026] tubing saver rotator 200. The rotator assembly 200 includes a tubing mandrel 32 having an extending mandrel ledge 38. Said mandrel ledge 38 may be rotatably supported on a top surface 31A of a bottom plate 31 or, as shown in FIG. 6, may be supported on a bearing 33, which bearing 33 rests on the top surface 31A of the bottom plate 31. The mandrel ledge 38 and the bottom plate 31 therefore captures the bearing 33 therebetween. The mandrel ledge 38 of the tubing mandrel 32 therefore engages and rotatably rides against the bearing 33. As shown in FIG. 5, the bottom plate 31 disposed between an interior edge 50A of a casing head 50 and an exterior edge 32A of the tubing mandrel 32. The bottom plate 31 therefore supports the bearing 33. A mandrel plate 34 rests on top of the mandrel ledge 38 and is disposed between the interior edge 50A of the casing head 50 and the exterior edge 32A of the tubing mandrel 32. A lower interior bowl seal 36, exterior plate seal 35, and a mandrel plate seal 37 prevents fluid from contaminating said bearing 33.
  • The lower end of the [0027] tubing mandrel 32 is attached to the tubing string (not shown) with a lower connection 39, and the opposite end of the tubing mandrel 32 is attached to a swivel 43 with an upper connection 41. The lower and upper connection means 39, 41 are known in the art. The swivel 43 is attached to an upper end 32B of the tubing mandrel 32, which allows a lower part 42 of the swivel 43 to rotate with the tubing mandrel 32. An upper part 43A of the swivel 43 may be attached to a stationary pump tee (not shown). A swivel cap 44 connects the lower part 42 of the swivel 43 to the upper part 43A of the swivel 43, and seals 45, 46, and 51 are provided in the swivel 43 to prevent leakage or entry of fluids from the tubing mandrel 32 or environment. A union (not shown) may be used in lieu of the swivel 43 as well as substitution of other types of mechanisms to allow rotation or, the tubing mandrel 32 may be attached directly to the pump tee with the pump tee designed to allow some movement or rotation.
  • A rubber or packing [0028] element 47 is disposed on top of the mandrel plate 34. A top plate 48 is then disposed on the rubber or packing element 47, said top plate 48 is compressed down to squeeze the rubber element 47 between the top plate 48 and the mandrel plate 34 by a casing head dognut 49. The dognut 49 may be removed to grease the bearing 33 area if desired or to replace the top plate 48, rubber element 47, mandrel plate 34, or mandrel plate seal 37.
  • Other options exist to use existing casing heads or modify the casing head design as shown in FIG. 5 to accept the [0029] bottom plate 31 that provides the top surface 31A of the bottom plate 31 for the bearing 33 to be rotatably supported on, with seals 35 and 36 positioned around the bottom plate 31, if desired. Further, other options exist to connect the mandrel plate 34 to the bottom plate 31 such as using bolts, supports, or other connection means known in the art.
  • The [0030] mandrel plate 34 may include additional seals (not shown) on the internal and/or external diameter of the mandrel plate 34, if desired. It should be further understood that in shallow wells, the bearing 33 may not be necessary to turn the tubing mandrel 32 if a good surface is provided between the bottom plate 31 and the mandrel ledge 38.
  • The purpose of the present invention is to have the mandrel bowl [0031] 1 (FIG. 1) or bottom plate 31 (FIG. 5) for the support of the tubing mandrel rotatable on the bearing surface attached to the string of tubing in the well. A bearing may or may not be used between the mandrel ledge and the bowl ledge support or bottom plate. The bearing would preferably be a thrust bearing and could be of the cylindrical roller bearing, needle bearing, tapered roller bearing, spherical bearing, and/or ball bearings. Thrust washers or a good surface between the mandrel ledge and the bottom plate could be used if the thrust weight is low enough to allow rotation of the tubing mandrel.
  • Referring again to FIG. 1, in the preferred embodiment seals are positioned between the [0032] tubing mandrel 2 and the mandrel bowl 1, between the bowl plate 4 and the mandrel bowl 1, and between the bowl plate 4 and the mandrel ledge 10. Additional or alternate seals to prevent installation contamination or contamination from outside fluids if the rubber element 18 leaks, or contamination from inside fluids into the bearing 3 area or external of the casing head 17, may be placed between the tubing mandrel 2 and an interior 4A of the bowl plate 4, between the mandrel ledge 10 and the mandrel bowl 1, between the tubing mandrel 2 and the top plate 19, between the mandrel bowl 1 and an interior 17B of the casing head 17, between the interior 17B of the casing head 17 and the bowl plate 4, and/or between the interior 17B of the casing head 17 and the top plate 19. From the above description it should be understood the present invention may allow the use of no seals or the use of any combination of seals between any combination of the tubing mandrel 2, bowl plate 4, top plate 19, rubber element 18, dognut 20, mandrel bowl 1, support ledges, and the casing head interior 17B. Likewise, referring to the embodiment of FIG. 5, it should be understood the present invention may allow the use of no seals or the use of any combination of seals between any combination of the tubing mandrel 32, bowl plate 34, top plate 48, rubber element 47, dognut 49, bottom plate 31, support ledges, and the casing head interior.
  • Further purpose of this invention is to allow one to attach a swivel or union to the top of the tubing mandrel. Referring to FIG. 3, the [0033] swivel 12 may be attached to the upper end 2A of the tubing mandrel 2 or, as shown in FIG. 4, to allow for an integral part of the swivel 12 to be built as part of the tubing mandrel 2 (to reduce costs and also to reduce the clearance between the wellhead and pump tee). The swivel or union or the tubing mandrel may have edges placed on them to allow easier gripping of the tubing mandrel by a pipe wrench or a handle or automatic rotation device. In addition, one may place attachments to the rotator or swivel assembly to allow gearing or other means to rotate the tubing mandrel.
  • Referring now to FIG. 6, illustrating a second alternate embodiment of the present invention, a tubing [0034] saver rotator assembly 300 includes a mandrel bowl 110 having a ledge support 110 A, said mandrel bowl 110 positioned on a lip 117 of a flanged connection 120. Said flange connection 120 allows for connection to the wellhead with bolts (not shown) placed through bolt holes 120A and sealing provided by a conventional ring seal (not shown) seated in a ring grove 120B. An alternate arrangement is to integrally combine the mandrel bowl 110 and the flange connection 120.
  • A [0035] tubing mandrel 130 is stabbed into the mandrel bowl 110 and rests on the surface of the ledge support 110A of the mandrel bowl 110 or, as shown in FIG. 6, may be supported on a bearing 140, which bearing 140 rests on the ledge support 110A of the mandrel bowl 110. A bowl plate 145 is attached to the mandrel bowl 110 with bolt plate screws 115 selectively located around the bowl plate 145. Fluids are prevented from entering the bearing 140 area through a lower interior bowl seal 116, a bowl plate seal 118, and a mandrel plate seal 119. The lower end of the tubing mandrel 130 is attached to a tubing string (not shown) with a lower connection 125, and the opposite end of the tubing mandrel 130 is attached to a swivel 143 with an upper connection 126. Said swivel 143 attached to an upper end 132 of the tubing mandrel 130, and allows a lower part 133 of the swivel 143 to rotate with the tubing mandrel 130. An upper part 133A of the swivel 143 may be attached to a stationary pump tee (not shown). A union may be used in lieu of the swivel 143 as well as substitution of other types of mechanisms known in the art to allow rotation. Further, as known in the art, the tubing mandrel 130 may be attached directly to the pump tee.
  • A rubber or packing [0036] element 147 is disposed on top of the bowl plate 145. A top plate 148 is then disposed on top of the rubber or packing element 147, said top plate 148 is compressed down to squeeze the rubber element 147 between the top plate 148 and the bowl plate 145 by a casing head dognut 149. The casing head dognut 149 may be removed to grease the bearing 140 area if desired or to replace the top plate 148, rubber element 147, bowl plate 145, bowl plate screws 115, bowl plate seal 118, or mandrel plate seal 119. This arrangement allows most seals to be easily replaced by one person without removing the tubing mandrel 130 and mandrel bowl 110 which would normally require a rig in prior art designs. In the preferred embodiment, thread means 149A attaches the dognut 149 to the flange connection 120 as shown in FIG. 6, however other similar attaching means known in the art including flange means may be used. The seals 116, 118, and 119 reduce the chance that the rubber element 147 will leak and therefore provides extra sealing protection for emissions or entry of outside fluids into the wellhead.
  • Other enhancements or modifications to the flanged tubing [0037] saver rotator assembly 300 includes the addition of seals between any combination of the dognut 149, the flanged connection 120, the top plate 148, the tubing mandrel 130, the mandrel bowl 110, or the bowl plate 145. In addition, the flanged connection 120 and mandrel bowl 110 may be manufactured as one piece. In addition, the user may rely on the seals 116, 118, and 119 disposed around the mandrel bowl 110, in place of the dognut 149, top plate 148, and rubber element 147. One further example of modification to the tubing saver rotator assembly 300 as described above, is to have the flange connection 120 and the mandrel bowl 110 manufactured as one piece, and using seals 116, 118, and 119 to prevent emissions or fluid entry into the wellhead, with seals 118 and 119 being replaceable without requiring use of a rig.
  • Although the description above contains many specificities, these should not be construed as limiting the scope of the invention but as merely providing illustrations of a presently preferred embodiment of this invention. [0038]
  • Thus the scope of the invention should be determined by the appended claims in the formal application and their legal equivalents, rather than by the examples given. [0039]

Claims (53)

We claim:
1. A rotator assembly in a casing head, wellhead or tubing head (hereinafter said casing head, wellhead or tubing head referred to as “casing head”) for rotatably suspending a tubing string in an oil well, said rotator assembly comprising:
a mandrel bowl in communication with the casing head, said mandrel bowl having a ledge support, said ledge support having a rotation surface,
a tubing mandrel rotatably mounted to the mandrel bowl, said tubing mandrel having an upper end, a lower end, and a mandrel ledge, wherein the rotation surface is disposed between said ledge support and the mandrel ledge of the tubing mandrel, wherein the mandrel ledge engages and rotatably rides the rotation surface,
a bowl plate positioned between the casing head and the tubing mandrel, and
a rotation means,
wherein the tubing mandrel is rotatably supported on the rotation surface,
wherein the lower end of the tubing mandrel is attached to the tubing string.
2. The rotator assembly as recited in claim 1, further including at least one first seals disposed between the mandrel bowl and the tubing mandrel.
3. The rotator assembly as recited in claim 1, further including at least one second seals disposed between the mandrel bowl and the bowl plate.
4. The rotator assembly as recited in claim 1, further including at least one third seals disposed between the tubing mandrel and the bowl plate.
5. The rotator assembly as recited in claim 1, further including at least one fourth seals disposed between the bowl plate and the casing head.
6. The rotator assembly as recited in claim 1, further including at least one fifth seals disposed between the mandrel bowl and the casing head.
7. The rotator assembly as recited in claim 1, wherein the mandrel ledge of the tubing mandrel is substantially perpendicular to the length of the tubing mandrel.
8. The rotator assembly as recited in claim 1, wherein the rotation surface is a bearing.
9. The rotator assembly as recited in claim 8, wherein the bearing is a thrust bearing.
10. The rotator assembly as recited in claim 8, wherein the bearing is a roller bearing.
11. The rotator assembly as recited in claim 8, wherein the bearing is a ball bearing.
12. The rotator assembly as recited in claim 8, wherein the bearing is a thrust washer.
13. The rotator assembly as recited in claim 1, wherein the bowl plate rests on the mandrel ledge.
14. The rotator assembly as recited in claim 1, wherein the bowl plate rests on the mandrel bowl.
15. The rotator assembly as recited in claim 1, wherein the upper end of the tubing mandrel is attached to the rotation means.
16. A rotator assembly in a casing head, wellhead or tubing head (hereinafter said casing head, wellhead or tubing head referred to as “casing head”) for rotatably suspending a tubing string in an oil well, said rotator assembly comprising:
a tubing mandrel having an upper end, a lower end, and a mandrel ledge,
a bottom plate having a rotation surface positioned between the bottom plate and the mandrel ledge, wherein the mandrel ledge engages and rotatably rides the rotation surface,
said bottom plate disposed between an interior edge of the casing head and an exterior edge of the tubing mandrel,
a mandrel plate positioned between the casing head and the tubing mandrel, said mandrel plate resting on the mandrel ledge, and
a rotation means,
wherein the tubing mandrel is rotatably supported on the rotation surface,
wherein the lower end of the tubing mandrel is attached to the tubing string.
17. The rotator assembly as recited in claim 16, wherein the mandrel ledge of the tubing mandrel is substantially perpendicular to the length of the tubing mandrel.
18. The rotator assembly as recited in claim 16, further including at least one first seals disposed between the bottom plate and the tubing mandrel.
19. The rotator assembly as recited in claim 16, further including at least one second seals disposed between the bottom plate and the casing head.
20. The rotator assembly as recited in claim 16, further including at least one third seals disposed between the mandrel plate and the tubing mandrel.
21. The rotator assembly as recited in claim 16, wherein the rotation surface is a bearing.
22. The rotator assembly as recited in claim 21, wherein the bearing is a thrust bearing.
23. The rotator assembly as recited in claim 21, wherein the bearing is a roller bearing.
24. The rotator assembly as recited in claim 21, wherein the bearing is a ball bearing.
25. The rotator assembly as recited in claim 21 wherein the bearing is a thrust washer.
26. The rotator assembly as recited in claim 16, wherein the upper end of the tubing mandrel is attached to the rotation means.
27. A rotator assembly inside a casing head, wellhead or tubing head (hereinafter said casing head, wellhead or tubing head referred to as “casing head”) for rotatably suspending a tubing string in an oil well, said rotator assembly comprising:
a mandrel bowl in communication with the casing head, said mandrel bowl having a ledge support, said ledge support having a rotation surface,
a tubing mandrel rotatably mounted to the mandrel bowl, said tubing mandrel having an upper end, a lower end, and a mandrel ledge, wherein the rotation surface is disposed between said ledge support and the mandrel ledge of the tubing mandrel, wherein the mandrel ledge engages and rotatably rides the rotation surface, and
a rotation means,
wherein the lower end of the tubing mandrel is attached to the tubing string.
28. The rotator assembly as recited in claim 27, wherein the mandrel ledge of the tubing mandrel is substantially perpendicular to the length of the tubing mandrel.
29. The rotator assembly as recited in claim 27, further including at least one first seals disposed between the mandrel bowl and the tubing mandrel.
30. The rotator assembly as recited in claim 27, further including at least one second seals disposed between the mandrel bowl and the casing head.
31. The rotator assembly as recited in claim 27, wherein the rotation surface is a bearing.
32. The rotator assembly as recited in claim 31, wherein the bearing is a thrust bearing.
33. The rotator assembly as recited in claim 31, wherein the bearing is a roller bearing.
34. The rotator assembly as recited in claim 31, wherein the bearing is a ball bearing.
35. The rotator assembly as recited in claim 31, wherein the bearing is a thrust washer.
36. The rotator assembly as recited in claim 27, wherein the upper end of the tubing mandrel is attached to the rotation means.
37. A rotator assembly for rotatably suspending a tubing string in an oil well, said rotator assembly comprising:
a mandrel bowl in communication with a flange connection, said mandrel bowl having a ledge support, said ledge support having a rotation surface,
a tubing mandrel rotatably mounted to the mandrel bowl, said tubing mandrel having an upper end, a lower end, and a mandrel ledge, wherein the rotation surface is disposed between said ledge support and the mandrel ledge of the tubing mandrel, wherein the mandrel ledge engages and rotatably rides the rotation surface,
a bowl plate positioned between the flange connection and the tubing mandrel,
a rotation means,
wherein the tubing mandrel is rotatably supported on the rotation surface,
wherein the lower end of the tubing mandrel is attached to the tubing string.
38. The rotation assembly as recited in claim 37, further comprising a packing element positioned on top of the bowl plate, a top plate positioned on top of the packing element, wherein the top plate is compressed in a downward direction by a casing head dognut thereby squeezing the rubber element between the top plate and the bowl plate, said dognut attached to the flange connection.
39. The rotator assembly as recited in claim 37, wherein the mandrel ledge of the tubing mandrel is substantially perpendicular to the length of the tubing mandrel.
40. The rotator assembly as recited in claim 37, further including at least one first seals disposed between the mandrel bowl and the tubing mandrel.
41. The rotator assembly as recited in claim 37, further including at least one second seals disposed between the mandrel bowl and the bowl plate.
42. The rotator assembly as recited in claim 37, further including at least one third seals disposed between the tubing mandrel and the bowl plate.
43. The rotator assembly as recited in claim 37, further including at least one fourth seals disposed between the bowl plate and the flange connection.
44. The rotator assembly as recited in claim 37, further including at least one fifth seals disposed between the mandrel bowl and the flange connection.
45. The rotator assembly as recited in claim 37, wherein the rotation surface is a bearing.
46. The rotator assembly as recited in claim 45, wherein the bearing is a thrust bearing.
47. The rotator assembly as recited in claim 45, wherein the bearing is a roller bearing.
48. The rotator assembly as recited in claim 45, wherein the bearing is a ball bearing.
49. The rotator assembly as recited in claim 45, wherein the bearing is a thrust washer.
50. The rotator assembly as recited in claim 37, wherein the bowl plate rests on the mandrel ledge.
51. The rotator assembly as recited in claim 37, wherein the bowl plate rests on the mandrel bowl.
52. The rotator assembly as recited in claim 37, wherein the upper end of the tubing mandrel is attached to the rotation means.
53. The rotation assembly as recited in claim 37, wherein the flange connection is manufactured as an integral part of the mandrel bowl.
US10/356,750 2002-04-10 2003-02-03 Tubing saver rotator and method for using same Abandoned US20030192688A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US10/356,750 US20030192688A1 (en) 2002-04-10 2003-02-03 Tubing saver rotator and method for using same
US11/143,027 US7448444B2 (en) 2002-04-10 2005-06-02 Tubing saver rotator and method for using same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US37139302P 2002-04-10 2002-04-10
US10/356,750 US20030192688A1 (en) 2002-04-10 2003-02-03 Tubing saver rotator and method for using same

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/143,027 Continuation-In-Part US7448444B2 (en) 2002-04-10 2005-06-02 Tubing saver rotator and method for using same

Publications (1)

Publication Number Publication Date
US20030192688A1 true US20030192688A1 (en) 2003-10-16

Family

ID=29250670

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/356,750 Abandoned US20030192688A1 (en) 2002-04-10 2003-02-03 Tubing saver rotator and method for using same

Country Status (2)

Country Link
US (1) US20030192688A1 (en)
CA (1) CA2423571A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040065434A1 (en) * 2002-10-04 2004-04-08 Bland Linden H. Tubing rotator
US20060137882A1 (en) * 2004-12-28 2006-06-29 Mcguire Bob Blast joint swivel for wellhead isolation tool and method of using same
US20070151721A1 (en) * 2005-12-30 2007-07-05 Rod Shampine Coiled tubing swivel assembly
US20090236090A1 (en) * 2008-03-20 2009-09-24 Stinger Wellhead Protection, Inc. Erosion Resistant Frac Head
US8820400B2 (en) 2008-03-20 2014-09-02 Oil States Energy Services, L.L.C. Erosion resistant frac head
CN106958431A (en) * 2017-05-02 2017-07-18 荆州市翔龙石油科技有限公司 A kind of environmental-protecting and high-efficient type polished rod sealer and its packing replacing method

Citations (96)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4151407A (en) * 1977-04-28 1979-04-24 Texas Instruments Incorporated Low-power, infrared information transmission system
US4253521A (en) * 1978-10-23 1981-03-03 Halliburton Company Setting tool
US4576578A (en) * 1983-03-31 1986-03-18 Bell & Howell Company Interactive training apparatus
US4716961A (en) * 1987-02-06 1988-01-05 Usx Engineers & Consultants, Inc. Rotary drive apparatus for downhold pump
US4729381A (en) * 1986-02-04 1988-03-08 Nippon Colin Co., Ltd. Living body information recorder
US4731726A (en) * 1986-05-19 1988-03-15 Healthware Corporation Patient-operated glucose monitor and diabetes management system
US4796639A (en) * 1987-11-05 1989-01-10 Medical Graphics Corporation Pulmonary diagnostic system
US4799199A (en) * 1986-09-18 1989-01-17 Motorola, Inc. Bus master having burst transfer mode
US4803625A (en) * 1986-06-30 1989-02-07 Buddy Systems, Inc. Personal health monitor
US4897869A (en) * 1988-05-17 1990-01-30 Canon Kabushiki Kaisha Data communication apparatus
US4907973A (en) * 1988-11-14 1990-03-13 Hon David C Expert system simulator for modeling realistic internal environments and performance
US4933873A (en) * 1988-05-12 1990-06-12 Healthtech Services Corp. Interactive patient assistance device
US5007429A (en) * 1987-09-21 1991-04-16 Pulsetrend, Inc. Interface using 12-digit keypad for programming parameters in ambulatory blood pressure monitor
US5016172A (en) * 1989-06-14 1991-05-14 Ramp Comsystems, Inc. Patient compliance and status monitoring system
US5019974A (en) * 1987-05-01 1991-05-28 Diva Medical Systems Bv Diabetes management system and apparatus
US5024225A (en) * 1989-09-26 1991-06-18 William Fang Personal health monitor enclosure
US5025374A (en) * 1987-12-09 1991-06-18 Arch Development Corp. Portable system for choosing pre-operative patient test
US5034807A (en) * 1986-03-10 1991-07-23 Kohorn H Von System for evaluation and rewarding of responses and predictions
US5095798A (en) * 1989-01-10 1992-03-17 Nintendo Co. Ltd. Electronic gaming device with pseudo-stereophonic sound generating capabilities
US5109974A (en) * 1990-05-11 1992-05-05 Menziken Automation Mat Ag Assembly line system
US5111817A (en) * 1988-12-29 1992-05-12 Medical Physics, Inc. Noninvasive system and method for enhanced arterial oxygen saturation determination and arterial blood pressure monitoring
US5120230A (en) * 1989-05-30 1992-06-09 Optical Data Corporation Interactive method for the effective conveyance of information in the form of visual images
US5128752A (en) * 1986-03-10 1992-07-07 Kohorn H Von System and method for generating and redeeming tokens
US5134391A (en) * 1989-01-10 1992-07-28 Nintendo Company Limited System for preventing the use of an unauthorized external memory
US5176502A (en) * 1990-04-25 1993-01-05 Becton, Dickinson And Company Syringe pump and the like for delivering medication
US5182707A (en) * 1990-07-23 1993-01-26 Healthdyne, Inc. Apparatus for recording reagent test strip data by comparison to color lights on a reference panel
US5204670A (en) * 1988-08-29 1993-04-20 B. I. Incorporated Adaptable electric monitoring and identification system
US5222020A (en) * 1989-04-18 1993-06-22 Takeda Engineering Consultant Inc. Acquisition of arterial response process for pulsating blood flow and its blood pressure measuring method
US5227874A (en) * 1986-03-10 1993-07-13 Kohorn H Von Method for measuring the effectiveness of stimuli on decisions of shoppers
US5299121A (en) * 1992-06-04 1994-03-29 Medscreen, Inc. Non-prescription drug medication screening system
US5307263A (en) * 1992-11-17 1994-04-26 Raya Systems, Inc. Modular microprocessor-based health monitoring system
US5308229A (en) * 1992-06-03 1994-05-03 Pmc Liquiflo Equipment Company Pump having an internal gas pump
US5329459A (en) * 1989-09-29 1994-07-12 Healthtech Services Corporation Interactive medication delivery system
US5329608A (en) * 1992-04-02 1994-07-12 At&T Bell Laboratories Automatic speech recognizer
US5331549A (en) * 1992-07-30 1994-07-19 Crawford Jr John M Medical monitor system
US5390238A (en) * 1992-06-15 1995-02-14 Motorola, Inc. Health support system
US5388639A (en) * 1993-12-20 1995-02-14 Betchan; Stanley G. Wellhead tubing rotator
US5399821A (en) * 1993-10-20 1995-03-21 Teikoku Tsushin Kogyo Co., Ltd. Keytop for push-button switches, and method of manufacturing same
US5410471A (en) * 1992-02-24 1995-04-25 Toto, Ltd. Networked health care and monitoring system
US5427178A (en) * 1994-02-17 1995-06-27 Rodec Tool Company Inc. Tubing rotator and hanger
US5429188A (en) * 1993-12-29 1995-07-04 Jorvik Machine Tool & Welding Inc. Tubing rotator for a well
US5431230A (en) * 1991-04-08 1995-07-11 Rotating Production Systems, Inc. Slant wellbore tubing anchor catcher with rotating mandrel
US5434611A (en) * 1991-12-16 1995-07-18 Matsushita Electric Industrial Co., Ltd. Home health care system which employs a two-way community antenna television network to permit communication between a doctor and patients at different locations
US5483276A (en) * 1993-08-02 1996-01-09 The Arbitron Company Compliance incentives for audience monitoring/recording devices
US5488423A (en) * 1994-11-17 1996-01-30 U.S. Narrow Networks, Inc. Home communication method and apparatus
US5502636A (en) * 1992-01-31 1996-03-26 R.R. Donnelley & Sons Company Personalized coupon generating and processing system
US5501231A (en) * 1993-06-02 1996-03-26 Kaish; Norman Patient operated system for testing and recording a biological condition of the patient
US5504519A (en) * 1991-10-03 1996-04-02 Viscorp Method and apparatus for printing coupons and the like
US5517405A (en) * 1993-10-14 1996-05-14 Aetna Life And Casualty Company Expert system for providing interactive assistance in solving problems such as health care management
US5597307A (en) * 1994-07-01 1997-01-28 Tv Interactive Data Corporation Method for starting up a process automatically on insertion of a storage media into a host device
US5596994A (en) * 1993-08-30 1997-01-28 Bro; William L. Automated and interactive behavioral and medical guidance system
US5601435A (en) * 1994-11-04 1997-02-11 Intercare Method and apparatus for interactively monitoring a physiological condition and for interactively providing health related information
US5619991A (en) * 1995-04-26 1997-04-15 Lucent Technologies Inc. Delivery of medical services using electronic data communications
US5628309A (en) * 1996-01-25 1997-05-13 Raya Systems, Inc. Meter for electrically measuring and recording injection syringe doses
US5631844A (en) * 1991-07-30 1997-05-20 University Of Virginia Interactive remote sample analysis system
US5633910A (en) * 1994-09-13 1997-05-27 Cohen; Kopel H. Outpatient monitoring system
US5642731A (en) * 1990-01-17 1997-07-01 Informedix, Inc. Method of and apparatus for monitoring the management of disease
US5642936A (en) * 1996-01-29 1997-07-01 Oncormed Methods for identifying human hereditary disease patterns
US5704366A (en) * 1994-05-23 1998-01-06 Enact Health Management Systems System for monitoring and reporting medical measurements
US5704902A (en) * 1995-09-19 1998-01-06 Headwaters Research & Development Inc Handholdable massager having combination massaging and dual function two speed actuator pad
US5711297A (en) * 1993-12-29 1998-01-27 First Opinion Corporation Computerized medical advice system and method including meta function
US5715451A (en) * 1995-07-20 1998-02-03 Spacelabs Medical, Inc. Method and system for constructing formulae for processing medical data
US5717913A (en) * 1995-01-03 1998-02-10 University Of Central Florida Method for detecting and extracting text data using database schemas
US5720733A (en) * 1994-07-22 1998-02-24 Raya Systems, Inc. Apparatus for determining and recording injection doses in syringes using electrical capacitance measurements
US5727153A (en) * 1995-06-06 1998-03-10 Powell; Ken R. Retail store having a system of receiving electronic coupon information from a portable card and sending the received coupon information to other portable cards
US5732777A (en) * 1995-11-28 1998-03-31 Dynamic Oil Tools Inc. Well tubing suspension and rotator system
US5752234A (en) * 1995-08-18 1998-05-12 Patient Solutions Method and apparatus for managing disposable medical supplies appropriate for a single patient visit
US5760771A (en) * 1996-07-17 1998-06-02 At & T Corp System and method for providing structured tours of hypertext files
US5772585A (en) * 1996-08-30 1998-06-30 Emc, Inc System and method for managing patient medical records
US5868669A (en) * 1993-12-29 1999-02-09 First Opinion Corporation Computerized medical diagnostic and treatment advice system
US5875432A (en) * 1994-08-05 1999-02-23 Sehr; Richard Peter Computerized voting information system having predefined content and voting templates
US5879163A (en) * 1996-06-24 1999-03-09 Health Hero Network, Inc. On-line health education and feedback system using motivational driver profile coding and automated content fulfillment
US5893098A (en) * 1994-09-14 1999-04-06 Dolphin Software Pty Ltd System and method for obtaining and collating survey information from a plurality of computer users
US5893077A (en) * 1995-08-23 1999-04-06 Microsoft Corporation Method and apparatus for generating and collecting a billing event object within an on-line network
US5897493A (en) * 1997-03-28 1999-04-27 Health Hero Network, Inc. Monitoring system for remotely querying individuals
US5899855A (en) * 1992-11-17 1999-05-04 Health Hero Network, Inc. Modular microprocessor-based health monitoring system
US5911687A (en) * 1995-11-15 1999-06-15 Hitachi, Ltd. Wide area medical information system and method using thereof
US5913310A (en) * 1994-05-23 1999-06-22 Health Hero Network, Inc. Method for diagnosis and treatment of psychological and emotional disorders using a microprocessor-based video game
US6022315A (en) * 1993-12-29 2000-02-08 First Opinion Corporation Computerized medical diagnostic and treatment advice system including network access
US6022615A (en) * 1989-06-07 2000-02-08 Markus Rettenbacher Shaped part for use as a construction material
US6029138A (en) * 1997-08-15 2000-02-22 Brigham And Women's Hospital Computer system for decision support in the selection of diagnostic and therapeutic tests and interventions for patients
US6026898A (en) * 1997-07-11 2000-02-22 Campbell Industries Ltd. Integral tubing head and rotator
US6046761A (en) * 1996-04-09 2000-04-04 Medcom Technology Associates, Inc Interactive communication system for medical treatment of remotely located patients
US6049794A (en) * 1997-12-09 2000-04-11 Jacobs; Charles M. System for screening of medical decision making incorporating a knowledge base
US6050940A (en) * 1996-06-17 2000-04-18 Cybernet Systems Corporation General-purpose medical instrumentation
US6055314A (en) * 1996-03-22 2000-04-25 Microsoft Corporation System and method for secure purchase and delivery of video content programs
US6055506A (en) * 1997-04-25 2000-04-25 Unitron Medical Communications, Inc. Outpatient care data system
US6055487A (en) * 1991-07-30 2000-04-25 Margery; Keith S. Interactive remote sample analysis system
US6057758A (en) * 1998-05-20 2000-05-02 Hewlett-Packard Company Handheld clinical terminal
US6168563B1 (en) * 1992-11-17 2001-01-02 Health Hero Network, Inc. Remote health monitoring and maintenance system
US6177940B1 (en) * 1995-09-20 2001-01-23 Cedaron Medical, Inc. Outcomes profile management system for evaluating treatment effectiveness
US6189029B1 (en) * 1996-09-20 2001-02-13 Silicon Graphics, Inc. Web survey tool builder and result compiler
US6248065B1 (en) * 1997-04-30 2001-06-19 Health Hero Network, Inc. Monitoring system for remotely querying individuals
US6386284B1 (en) * 2000-02-11 2002-05-14 David A. Buck Snubbing unit drilling system
US20030024709A1 (en) * 2001-07-31 2003-02-06 Nolan Cuppen Well tubing rotator and hanger system
US6543533B2 (en) * 2001-03-02 2003-04-08 Duhn Oil Tool, Inc. Well tubing rotator

Patent Citations (99)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4151407A (en) * 1977-04-28 1979-04-24 Texas Instruments Incorporated Low-power, infrared information transmission system
US4253521A (en) * 1978-10-23 1981-03-03 Halliburton Company Setting tool
US4576578A (en) * 1983-03-31 1986-03-18 Bell & Howell Company Interactive training apparatus
US4729381A (en) * 1986-02-04 1988-03-08 Nippon Colin Co., Ltd. Living body information recorder
US5034807A (en) * 1986-03-10 1991-07-23 Kohorn H Von System for evaluation and rewarding of responses and predictions
US5227874A (en) * 1986-03-10 1993-07-13 Kohorn H Von Method for measuring the effectiveness of stimuli on decisions of shoppers
US5128752A (en) * 1986-03-10 1992-07-07 Kohorn H Von System and method for generating and redeeming tokens
US4731726A (en) * 1986-05-19 1988-03-15 Healthware Corporation Patient-operated glucose monitor and diabetes management system
US4803625A (en) * 1986-06-30 1989-02-07 Buddy Systems, Inc. Personal health monitor
US4799199A (en) * 1986-09-18 1989-01-17 Motorola, Inc. Bus master having burst transfer mode
US4716961A (en) * 1987-02-06 1988-01-05 Usx Engineers & Consultants, Inc. Rotary drive apparatus for downhold pump
US5019974A (en) * 1987-05-01 1991-05-28 Diva Medical Systems Bv Diabetes management system and apparatus
US5007429A (en) * 1987-09-21 1991-04-16 Pulsetrend, Inc. Interface using 12-digit keypad for programming parameters in ambulatory blood pressure monitor
US4796639A (en) * 1987-11-05 1989-01-10 Medical Graphics Corporation Pulmonary diagnostic system
US5025374A (en) * 1987-12-09 1991-06-18 Arch Development Corp. Portable system for choosing pre-operative patient test
US4933873A (en) * 1988-05-12 1990-06-12 Healthtech Services Corp. Interactive patient assistance device
US4897869A (en) * 1988-05-17 1990-01-30 Canon Kabushiki Kaisha Data communication apparatus
US5204670A (en) * 1988-08-29 1993-04-20 B. I. Incorporated Adaptable electric monitoring and identification system
US4907973A (en) * 1988-11-14 1990-03-13 Hon David C Expert system simulator for modeling realistic internal environments and performance
US5111817A (en) * 1988-12-29 1992-05-12 Medical Physics, Inc. Noninvasive system and method for enhanced arterial oxygen saturation determination and arterial blood pressure monitoring
US5095798A (en) * 1989-01-10 1992-03-17 Nintendo Co. Ltd. Electronic gaming device with pseudo-stereophonic sound generating capabilities
US5134391A (en) * 1989-01-10 1992-07-28 Nintendo Company Limited System for preventing the use of an unauthorized external memory
US5222020A (en) * 1989-04-18 1993-06-22 Takeda Engineering Consultant Inc. Acquisition of arterial response process for pulsating blood flow and its blood pressure measuring method
US5120230A (en) * 1989-05-30 1992-06-09 Optical Data Corporation Interactive method for the effective conveyance of information in the form of visual images
US6022615A (en) * 1989-06-07 2000-02-08 Markus Rettenbacher Shaped part for use as a construction material
US5016172A (en) * 1989-06-14 1991-05-14 Ramp Comsystems, Inc. Patient compliance and status monitoring system
US5024225A (en) * 1989-09-26 1991-06-18 William Fang Personal health monitor enclosure
US5329459A (en) * 1989-09-29 1994-07-12 Healthtech Services Corporation Interactive medication delivery system
US5642731A (en) * 1990-01-17 1997-07-01 Informedix, Inc. Method of and apparatus for monitoring the management of disease
US5176502A (en) * 1990-04-25 1993-01-05 Becton, Dickinson And Company Syringe pump and the like for delivering medication
US5109974A (en) * 1990-05-11 1992-05-05 Menziken Automation Mat Ag Assembly line system
US5182707A (en) * 1990-07-23 1993-01-26 Healthdyne, Inc. Apparatus for recording reagent test strip data by comparison to color lights on a reference panel
US5431230A (en) * 1991-04-08 1995-07-11 Rotating Production Systems, Inc. Slant wellbore tubing anchor catcher with rotating mandrel
US5631844A (en) * 1991-07-30 1997-05-20 University Of Virginia Interactive remote sample analysis system
US6055487A (en) * 1991-07-30 2000-04-25 Margery; Keith S. Interactive remote sample analysis system
US5504519A (en) * 1991-10-03 1996-04-02 Viscorp Method and apparatus for printing coupons and the like
US5434611A (en) * 1991-12-16 1995-07-18 Matsushita Electric Industrial Co., Ltd. Home health care system which employs a two-way community antenna television network to permit communication between a doctor and patients at different locations
US5502636A (en) * 1992-01-31 1996-03-26 R.R. Donnelley & Sons Company Personalized coupon generating and processing system
US5410471A (en) * 1992-02-24 1995-04-25 Toto, Ltd. Networked health care and monitoring system
US5329608A (en) * 1992-04-02 1994-07-12 At&T Bell Laboratories Automatic speech recognizer
US5308229A (en) * 1992-06-03 1994-05-03 Pmc Liquiflo Equipment Company Pump having an internal gas pump
US5299121A (en) * 1992-06-04 1994-03-29 Medscreen, Inc. Non-prescription drug medication screening system
US5390238A (en) * 1992-06-15 1995-02-14 Motorola, Inc. Health support system
US5331549A (en) * 1992-07-30 1994-07-19 Crawford Jr John M Medical monitor system
US5899855A (en) * 1992-11-17 1999-05-04 Health Hero Network, Inc. Modular microprocessor-based health monitoring system
US6168563B1 (en) * 1992-11-17 2001-01-02 Health Hero Network, Inc. Remote health monitoring and maintenance system
US5307263A (en) * 1992-11-17 1994-04-26 Raya Systems, Inc. Modular microprocessor-based health monitoring system
US5501231A (en) * 1993-06-02 1996-03-26 Kaish; Norman Patient operated system for testing and recording a biological condition of the patient
US5483276A (en) * 1993-08-02 1996-01-09 The Arbitron Company Compliance incentives for audience monitoring/recording devices
US5722418A (en) * 1993-08-30 1998-03-03 Bro; L. William Method for mediating social and behavioral processes in medicine and business through an interactive telecommunications guidance system
US5596994A (en) * 1993-08-30 1997-01-28 Bro; William L. Automated and interactive behavioral and medical guidance system
US5517405A (en) * 1993-10-14 1996-05-14 Aetna Life And Casualty Company Expert system for providing interactive assistance in solving problems such as health care management
US5399821A (en) * 1993-10-20 1995-03-21 Teikoku Tsushin Kogyo Co., Ltd. Keytop for push-button switches, and method of manufacturing same
US5388639A (en) * 1993-12-20 1995-02-14 Betchan; Stanley G. Wellhead tubing rotator
US5429188A (en) * 1993-12-29 1995-07-04 Jorvik Machine Tool & Welding Inc. Tubing rotator for a well
US6022315A (en) * 1993-12-29 2000-02-08 First Opinion Corporation Computerized medical diagnostic and treatment advice system including network access
US5711297A (en) * 1993-12-29 1998-01-27 First Opinion Corporation Computerized medical advice system and method including meta function
US5868669A (en) * 1993-12-29 1999-02-09 First Opinion Corporation Computerized medical diagnostic and treatment advice system
US5427178A (en) * 1994-02-17 1995-06-27 Rodec Tool Company Inc. Tubing rotator and hanger
US5913310A (en) * 1994-05-23 1999-06-22 Health Hero Network, Inc. Method for diagnosis and treatment of psychological and emotional disorders using a microprocessor-based video game
US5732709A (en) * 1994-05-23 1998-03-31 Enact Health Management Systems System for monitoring and reporting medical measurements
US5704366A (en) * 1994-05-23 1998-01-06 Enact Health Management Systems System for monitoring and reporting medical measurements
US5597307A (en) * 1994-07-01 1997-01-28 Tv Interactive Data Corporation Method for starting up a process automatically on insertion of a storage media into a host device
US5624265A (en) * 1994-07-01 1997-04-29 Tv Interactive Data Corporation Printed publication remote contol for accessing interactive media
US5720733A (en) * 1994-07-22 1998-02-24 Raya Systems, Inc. Apparatus for determining and recording injection doses in syringes using electrical capacitance measurements
US5875432A (en) * 1994-08-05 1999-02-23 Sehr; Richard Peter Computerized voting information system having predefined content and voting templates
US5633910A (en) * 1994-09-13 1997-05-27 Cohen; Kopel H. Outpatient monitoring system
US5893098A (en) * 1994-09-14 1999-04-06 Dolphin Software Pty Ltd System and method for obtaining and collating survey information from a plurality of computer users
US5601435A (en) * 1994-11-04 1997-02-11 Intercare Method and apparatus for interactively monitoring a physiological condition and for interactively providing health related information
US5488423A (en) * 1994-11-17 1996-01-30 U.S. Narrow Networks, Inc. Home communication method and apparatus
US5717913A (en) * 1995-01-03 1998-02-10 University Of Central Florida Method for detecting and extracting text data using database schemas
US5619991A (en) * 1995-04-26 1997-04-15 Lucent Technologies Inc. Delivery of medical services using electronic data communications
US5727153A (en) * 1995-06-06 1998-03-10 Powell; Ken R. Retail store having a system of receiving electronic coupon information from a portable card and sending the received coupon information to other portable cards
US5715451A (en) * 1995-07-20 1998-02-03 Spacelabs Medical, Inc. Method and system for constructing formulae for processing medical data
US5752234A (en) * 1995-08-18 1998-05-12 Patient Solutions Method and apparatus for managing disposable medical supplies appropriate for a single patient visit
US5893077A (en) * 1995-08-23 1999-04-06 Microsoft Corporation Method and apparatus for generating and collecting a billing event object within an on-line network
US5704902A (en) * 1995-09-19 1998-01-06 Headwaters Research & Development Inc Handholdable massager having combination massaging and dual function two speed actuator pad
US6177940B1 (en) * 1995-09-20 2001-01-23 Cedaron Medical, Inc. Outcomes profile management system for evaluating treatment effectiveness
US5911687A (en) * 1995-11-15 1999-06-15 Hitachi, Ltd. Wide area medical information system and method using thereof
US5732777A (en) * 1995-11-28 1998-03-31 Dynamic Oil Tools Inc. Well tubing suspension and rotator system
US5628309A (en) * 1996-01-25 1997-05-13 Raya Systems, Inc. Meter for electrically measuring and recording injection syringe doses
US5642936A (en) * 1996-01-29 1997-07-01 Oncormed Methods for identifying human hereditary disease patterns
US6055314A (en) * 1996-03-22 2000-04-25 Microsoft Corporation System and method for secure purchase and delivery of video content programs
US6046761A (en) * 1996-04-09 2000-04-04 Medcom Technology Associates, Inc Interactive communication system for medical treatment of remotely located patients
US6050940A (en) * 1996-06-17 2000-04-18 Cybernet Systems Corporation General-purpose medical instrumentation
US5879163A (en) * 1996-06-24 1999-03-09 Health Hero Network, Inc. On-line health education and feedback system using motivational driver profile coding and automated content fulfillment
US5760771A (en) * 1996-07-17 1998-06-02 At & T Corp System and method for providing structured tours of hypertext files
US5772585A (en) * 1996-08-30 1998-06-30 Emc, Inc System and method for managing patient medical records
US6189029B1 (en) * 1996-09-20 2001-02-13 Silicon Graphics, Inc. Web survey tool builder and result compiler
US5897493A (en) * 1997-03-28 1999-04-27 Health Hero Network, Inc. Monitoring system for remotely querying individuals
US6055506A (en) * 1997-04-25 2000-04-25 Unitron Medical Communications, Inc. Outpatient care data system
US6248065B1 (en) * 1997-04-30 2001-06-19 Health Hero Network, Inc. Monitoring system for remotely querying individuals
US6026898A (en) * 1997-07-11 2000-02-22 Campbell Industries Ltd. Integral tubing head and rotator
US6029138A (en) * 1997-08-15 2000-02-22 Brigham And Women's Hospital Computer system for decision support in the selection of diagnostic and therapeutic tests and interventions for patients
US6049794A (en) * 1997-12-09 2000-04-11 Jacobs; Charles M. System for screening of medical decision making incorporating a knowledge base
US6057758A (en) * 1998-05-20 2000-05-02 Hewlett-Packard Company Handheld clinical terminal
US6386284B1 (en) * 2000-02-11 2002-05-14 David A. Buck Snubbing unit drilling system
US6543533B2 (en) * 2001-03-02 2003-04-08 Duhn Oil Tool, Inc. Well tubing rotator
US20030024709A1 (en) * 2001-07-31 2003-02-06 Nolan Cuppen Well tubing rotator and hanger system

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040065434A1 (en) * 2002-10-04 2004-04-08 Bland Linden H. Tubing rotator
US6834717B2 (en) * 2002-10-04 2004-12-28 R&M Energy Systems, Inc. Tubing rotator
US20060137882A1 (en) * 2004-12-28 2006-06-29 Mcguire Bob Blast joint swivel for wellhead isolation tool and method of using same
US7278490B2 (en) * 2004-12-28 2007-10-09 Stinger Wellhead Protection, Inc. Blast joint swivel for wellhead isolation tool and method of using same
US20070151721A1 (en) * 2005-12-30 2007-07-05 Rod Shampine Coiled tubing swivel assembly
US7600564B2 (en) * 2005-12-30 2009-10-13 Schlumberger Technology Corporation Coiled tubing swivel assembly
US20090236090A1 (en) * 2008-03-20 2009-09-24 Stinger Wellhead Protection, Inc. Erosion Resistant Frac Head
US7789133B2 (en) 2008-03-20 2010-09-07 Stinger Wellhead Protection, Inc. Erosion resistant frac head
US20100326648A1 (en) * 2008-03-20 2010-12-30 Stinger Wellhead Protection, Inc. Erosion resistant frac head
US8016031B2 (en) 2008-03-20 2011-09-13 Stinger Wellhead Protection, Inc. Erosion resistant frac head
US8820400B2 (en) 2008-03-20 2014-09-02 Oil States Energy Services, L.L.C. Erosion resistant frac head
CN106958431A (en) * 2017-05-02 2017-07-18 荆州市翔龙石油科技有限公司 A kind of environmental-protecting and high-efficient type polished rod sealer and its packing replacing method

Also Published As

Publication number Publication date
CA2423571A1 (en) 2003-10-10

Similar Documents

Publication Publication Date Title
US7448444B2 (en) Tubing saver rotator and method for using same
US10760367B2 (en) Wellhead sealing device of sucker-rod pumping machine
US5875841A (en) Oil well blow-out preventer
AU2003252781B2 (en) Tubing Rotator
US4529210A (en) Drilling media injection for rotating blowout preventors
US5427178A (en) Tubing rotator and hanger
CA2515616C (en) Convertible rotary seal for progressing cavity pump drivehead
US6595278B1 (en) Assembly for locking a polished rod in a pumping wellhead
US5639227A (en) Seal arrangement for the drivehead of a downhole rotary pump
US6026898A (en) Integral tubing head and rotator
US6223819B1 (en) Wellhead for providing structure when utilizing a well pumping system
US6371487B1 (en) Gimbal and seal for the drivehead of a downhole rotary pump
CA2108838C (en) Apparatus for rotating a tubing string of a pumping wellhead
CA2856307C (en) Reciprocating and rotating section and methods in a drilling system
US20030192688A1 (en) Tubing saver rotator and method for using same
US5628516A (en) Sealing assembly for rotary oil pumps having means for leaks detection and method of using same
US6199630B1 (en) Pull-through tubing string rotator for an oil well
US3497244A (en) Swivel with adjustable packing
US5577556A (en) Unitary diversionary-tubing hanger and energizable rod seal
US5878812A (en) Misaligning wellhead system
CA2517919C (en) Polished rod rotator
US4476944A (en) Method of providing a fluid seal in downhole drilling apparatus
CN108868685A (en) The vertical well-sealing device of tuningout energy conservation
US20080257555A1 (en) Linear Drive Assembly with Rotary Union for Well Head Applications and Method Implemented Thereby
CN206220899U (en) Gas drilling manifold azimuth adjustment mechanism

Legal Events

Date Code Title Description
STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION