US20080202742A1 - Open Cavity in a Pocket of a Downhole Tool String Component - Google Patents
Open Cavity in a Pocket of a Downhole Tool String Component Download PDFInfo
- Publication number
- US20080202742A1 US20080202742A1 US11/679,529 US67952907A US2008202742A1 US 20080202742 A1 US20080202742 A1 US 20080202742A1 US 67952907 A US67952907 A US 67952907A US 2008202742 A1 US2008202742 A1 US 2008202742A1
- Authority
- US
- United States
- Prior art keywords
- component
- cavity
- downhole
- outer diameter
- 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
Links
- 238000004891 communication Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 17
- 238000005553 drilling Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
- E21B47/017—Protecting measuring instruments
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
Definitions
- An electromagnetic signal repeater apparatus comprises a housing that is securably mountable to the exterior of a pipe string disposed in a well bore.
- the housing includes first and second housing subassemblies.
- the first housing subassembly is electrically isolated from the second housing subassembly by a gap subassembly having a length that is at least two times the diameter of the housing.
- the first housing subassembly is electrically isolated from the pipe string and is secured thereto with a nonconductive strap.
- the second housing subassembly is electrically coupled with the pipe string and is secured thereto with a conductive strap.
- An electronics package and a battery are disposed within the housing. The electronics package receives, processes, and retransmits the information being communicated between the downhole equipment and the surface equipment via electromagnetic waves.
- U.S. Pat. No. 6,655,452 issued Dec. 2, 2003 to Zillinger discloses a carrier apparatus for connection with a pipe string for use in transporting at least one gauge downhole through a borehole.
- the apparatus includes a tubular body for connection with the pipe string having a bore for conducting a fluid therethrough and an outer surface, wherein the outer surface has at least one longitudinal recess formed therein.
- at least one insert defining an internal chamber for receiving a gauge is mounted with the body such that at least a portion of the insert is receivable within the recess for engagement therewith.
- the apparatus also includes an interlocking interface comprised of the engagement between the insert and the recess, wherein the interlocking interface is configured such that the insert inhibits radial expansion of the body adjacent the recess.
- a downhole tool string component has a tubular body with an inner and outer diameter.
- a pocket is formed in the outer diameter and is adapted to receive downhole instrumentation.
- a covering is attached to the outer diameter of the component and is adapted to seal the pocket from outside debris, the pocket having a bottom floor and a plurality of side walls.
- An open cavity is formed in at least one of the side walls.
- the pocket may be annular and may encompass the entire outer diameter.
- a plurality of pockets may be formed in the outer diameter and may be adapted to receive downhole instrumentation.
- the side walls may be sloped.
- a plurality of open cavities may be formed in at least one of the side walls.
- An open cavity may be formed in a plurality of the side walls.
- the cavity may comprise a step with a rounded geometry.
- the cavity may comprise rounded borders.
- the cavity may be generally concave.
- the cavity may comprise a convex portion A ratio of a depth of the cavity to a depth of the pocket ranges between 0.2 to 1, and 1.5 to 1.
- a portion of the downhole instrumentation may be disposed within the cavity.
- a portion of an electrically conductive conduit in electrical communication with the downhole instrumentation may be disposed within the cavity.
- the electrically conductive conduit may be in electrical communication with surface equipment.
- the downhole instrumentation may be part of a closed-loop system.
- the covering may be adapted to seal the plurality of pockets from outside debris.
- the covering may be a sleeve disposed around the outer diameter of the tubular body.
- the covering may be a plate fastened to the outer diameter of the tubular body.
- the covering may comprise a plurality of grooves adapted to stretch and/or flex with the tubular body.
- the tubular body may be selected from the group consisting of drill pipe, drill collars, reamers, subs, swivels, production pipe, injector pipe, horizontal drilling pipe, jars, hammers, stabilizers, or combinations thereof.
- FIG. 1 is a cross-sectional diagram of an embodiment of a tool string suspended in a bore hole.
- FIG. 2 is a cross-sectional diagram of an embodiment of a downhole tool string component.
- FIG. 3 is a cross-sectional diagram of an embodiment of a pocket in a downhole tool string component.
- FIG. 4 is a cross-sectional diagram of another embodiment of a pocket in a downhole tool string component.
- FIG. 5 is a perspective diagram of another embodiment of a downhole tool string component.
- FIG. 6 is a cross-sectional diagram of another embodiment of a pocket in a downhole tool string component.
- FIG. 7 is a cross-sectional diagram of another embodiment of a pocket in a downhole tool string component.
- FIG. 8 is a cross-sectional diagram of another embodiment of a pocket in a downhole tool string component.
- FIG. 9 is a cross-sectional diagram of another embodiment of a pocket in a downhole tool string component.
- FIG. 10 is a cross-sectional diagram of another embodiment of a pocket in a downhole tool string component.
- FIG. 11 is a cross-sectional diagram of another embodiment of a pocket in a downhole tool string component.
- FIG. 12 is a cross-sectional diagram of another embodiment of a pocket in a downhole tool string component.
- FIG. 13 is a cross-sectional diagram of another embodiment of a pocket in a downhole tool string component.
- FIG. 14 is a cross-sectional diagram of another embodiment of a pocket in a downhole tool string component.
- FIG. 15 is a cross-sectional diagram of another embodiment of a pocket in a downhole tool string component.
- FIG. 16 is a cross-sectional diagram of an embodiment of a plurality of pockets in a downhole tool string component.
- FIG. 17 is a perspective diagram of another embodiment of a pocket in a downhole tool string component.
- FIG. 1 is an embodiment of a tool string 100 suspended by a derrick 101 .
- a bottom-hole assembly 102 is located at the bottom of a bore hole 103 and comprises a drill bit 104 . As the drill bit 104 rotates downhole the tool string 100 advances farther into the earth.
- the tool string may penetrate soft or hard subterranean formations 105 .
- the bottom-hole assembly 102 and/or downhole components may comprise data acquisition devices which may ether data.
- the data may be sent to the surface via a transmission system to a data swivel 106 .
- the data swivel 106 may send the data to the surface equipment. Further, the surface equipment may send data and/or power to downhole tools and/or the bottom-hole assembly 102 .
- Electronic equipment and/or other downhole instrumentations may be disposed within the downhole tools, as in the embodiment of FIG. 2 .
- the electronic equipment may be disposed within pockets 200 formed in an outer diameter 201 of a downhole tool string component 202 .
- the pockets 200 may be covered and protected by a covering such as a sleeve 203 .
- the sleeve 203 may be a compliant, metal sleeve, such as is disclosed in U.S. patent application Ser. No. 11/164,572, which is herein incorporated by reference for all that it contains.
- the sleeve 203 forms a seal over the pockets 200 such that debris and drilling fluids cannot enter the pockets, protecting the electronic equipment from drilling mud and other materials which may damage them.
- the sleeve 203 may comprise a plurality of grooves 204 adapted to allow the sleeve 203 to stretch and/or flex with the component 202 , which may be particularly useful in directional drilling operations.
- the electronic equipment may comprise batteries, logic circuits, sensors, or other electronics suitable for downhole environments.
- the batteries may be used to power other downhole electronics or motors.
- the sensors may include pressure sensors, strain sensors, flow sensors, acoustic sensors, temperature sensors, torque sensors, position sensors, vibration sensors, or any combination thereof for monitoring conditions of the tool string component 202 or conditions in the bore hole.
- the logic circuits may be used to control a closed-loop system in one or more downhole components.
- At least one of the pockets 200 may comprise an open cavity 300 formed in a side wall 301 of the pocket 200 , as in the embodiment of FIG. 3 , with an overhanging portion 302 of the component between the cavity 300 and the outer diameter 201 .
- Right angles joining a bottom floor 303 of the pocket 200 with the side wall 301 may cause stress risers in the downhole component 202 , which may cause the component 202 to crack or weaken.
- the open cavity may comprise a characteristic of adding flexibility to the downhole tool string component. The added flexibility may be along the axis 251 of the downhole tool string component. In addition to adding flexibility to the to component, it may also shorten the pocket size, since the same amount of electronics may be disposed within a smaller pocket with the open cavity.
- the open cavity 300 preferably comprises rounded borders in order to reduce the number of stress risers in the component 200 .
- the rounded portions may comprise a radius or conic from 0.125 inches to 1 inch.
- the rounded portions may also comprise a conic form factor where 0.5 point to point and 1 is point to intersect and v(2)/2 defining a round our concave conic form factors may have a range from 0.6 to 0.9.
- the open cavity 300 may comprise a step 304 up from the bottom floor 303 with a rounded geometry in order to distribute torque and other forces across a larger area.
- a filler material 360 is fitted within the open cavity which supports the overhang from the ambient downhole pressure.
- the filler material may be made out of steel and comprise a geometry which approximates the geometry of the open cavity.
- Other suitable filler materials may be carbide, titanium, rubber, ceramics, metals, composites, or combinations thereof.
- the sleeve 203 may comprise grooves 204 on both an inner and outer surface 305 , 306 , making it more compliant to stretching and bending.
- Electronics may be disposed within hard casings 307 within the pocket 200 such that the electronics may be protected from jostling, vibrating, or pressure from the bore in addition to the protection given by the sleeve 203 .
- a portion 308 of the electronics or downhole instrumentation may be disposed within the cavity 300 . This may help anchor the electronics within the pocket 200 .
- Sensors may also be disposed within the cavity or within another part of the pocket 200 , which may aid in monitoring the amount of torque or pressure applied to the overhanging portion 302 or the sleeve 203 .
- the open cavity may also comprise a back end 250 .
- the back end 250 is the portion of the cavity 300 located generally farthest from an opening 350 of the cavity 300 .
- a portion of an electrically conductive conduit 400 may be disposed within the cavity 300 , as in the embodiment of FIG. 4 , and may protrude from the back end 250 of the cavity 300 .
- the conduit may comprise a coaxial cable, twisted pair of wires, copper wires, fiber optic lines, or combinations thereof.
- the conduit 400 may extend into the cavity 300 from a bore 401 in the wall of the component 202 and be in electrical communication with the downhole instrumentation.
- the conduit 401 may extend through a length of the component 202 to be connected to other downhole instruments, or it may connect to an electrically conductive conduit in an adjacent tool string component.
- the conduit 401 may be part of a downhole electrical transmission system
- a suitable transmission system for the current invention is disclosed in U.S. Pat. No. 6,670,880 to Hall, which is herein incorporated by reference for all that it contains.
- the transmission system may be capable of transmitting data and power to the downhole instrumentation simultaneously through the transmission system, either from the surface or from another component in the drill string.
- the covering may be a curved plate 500 fastened to the component 202 , as in the embodiment of FIG. 5 .
- the plate 500 may be a metal durable enough to resist wear due to downhole conditions and flexible enough to stretch or bend with the component 202 .
- the plate 500 may or may not be disposed around the entire outer diameter 201 of the component 202 , depending on the size of the pocket.
- the plate 500 may be fastened to the outer diameter 201 of the component, or it may be fastened within a recess formed in the outer diameter 201 and surrounding the pocket. An upper surface of the plate 500 may be flush with the outer diameter 201 of the component 202 . This may prevent the plate 500 from catching on the formation while drilling or removing the drill string from the bore hole 103 .
- the side wall 301 may comprise a plurality of open cavities 300 , as in the embodiments of FIGS. 6 and 7 .
- the cavities 300 may comprise equal or different depths.
- the cavity 300 may be formed straight into the side wall 301 , as in the embodiment of FIG. 8 .
- the side wall 301 may also be sloped at any angle with respect to the bottom floor 303 of the pocket 200 .
- the cavity 300 may simply be a small concave recess, with a ratio of the depth 900 of the cavity to a depth 901 of the pocket being as low as 0.2 to 1, as in the embodiment of FIG. 9 , though in some embodiments the ratio may be as high as 1.5 to 1.
- the cavity 300 may comprise a convex portion 1000 , as in the embodiment of FIG. 10 .
- the cavity 300 may comprise a sloped portion 1100 up from the bottom floor 303 of the pocket 200 , as in the embodiment of FIG. 11 , or from the overhanging portion 302 .
- the cavity 300 may comprise a plurality of successive steps 304 up from the bottom floor 303 , as in the embodiment of FIG. 12 , preferably comprising rounded geometries.
- the cavity 300 may comprise a step 304 from the overhanging portion 302 , as in the embodiment of FIG. 13 .
- the cavity 300 may also comprise a step 304 from both the overhanging portion 302 and the bottom floor 303 , as in the embodiment of FIG. 14 .
- a plurality of side walls 301 in the pocket 200 may comprise open cavities 300 , as in the embodiment of FIG. 15 .
- the covering 1600 may cover a single pocket 200 , or a plurality of pockets 200 in a single component 202 , as in the embodiment of FIG. 16 , though each pocket 200 may be sealed by an individual covering 1600 .
- the downhole instrumentation in each pocket 200 may be in electrical communication with each other.
- the cavity 300 may be formed in a plurality of the side walls 301 of the pocket 200 , as in the embodiment of FIG. 17 , when the pocket 200 does not encompass the entire outer diameter 201 of the component 202 .
Abstract
Description
- Recent advances in downhole telemetry systems have enable high speed communication between downhole devices and the earth's surface. With these high speed communication abilities, more downhole devices may be utilized in downhole applications. Harsh downhole environments may subject downhole devices to extreme temperatures and pressures. Further, drilling and/or production equipment may be subjected to potentially damaging forces, such as tensile loads from the weight of the drill string, bending, thermal expansion, vibration, and torque from the rotation of a drill string.
- U.S. Patent Publications 2005/0161215 and 2005/0001735, both to Hall, et al; which are both incorporated herein by reference for all that they contain; disclose a connection for retaining electronic devices within a bore of a downhole tool. The connection transfers a portion of the makeup load away from the electronic devices.
- U.S. Pat. No. 6,075,461 issued Jun. 13, 2000 to Smith discloses an apparatus, method and system for communicating information between downhole equipment and surface equipment. An electromagnetic signal repeater apparatus comprises a housing that is securably mountable to the exterior of a pipe string disposed in a well bore. The housing includes first and second housing subassemblies. The first housing subassembly is electrically isolated from the second housing subassembly by a gap subassembly having a length that is at least two times the diameter of the housing. The first housing subassembly is electrically isolated from the pipe string and is secured thereto with a nonconductive strap. The second housing subassembly is electrically coupled with the pipe string and is secured thereto with a conductive strap. An electronics package and a battery are disposed within the housing. The electronics package receives, processes, and retransmits the information being communicated between the downhole equipment and the surface equipment via electromagnetic waves.
- U.S. Pat. No. 6,655,452 issued Dec. 2, 2003 to Zillinger discloses a carrier apparatus for connection with a pipe string for use in transporting at least one gauge downhole through a borehole. The apparatus includes a tubular body for connection with the pipe string having a bore for conducting a fluid therethrough and an outer surface, wherein the outer surface has at least one longitudinal recess formed therein. Further, at least one insert defining an internal chamber for receiving a gauge is mounted with the body such that at least a portion of the insert is receivable within the recess for engagement therewith. The apparatus also includes an interlocking interface comprised of the engagement between the insert and the recess, wherein the interlocking interface is configured such that the insert inhibits radial expansion of the body adjacent the recess.
- In one aspect of the invention, a downhole tool string component has a tubular body with an inner and outer diameter. A pocket is formed in the outer diameter and is adapted to receive downhole instrumentation. A covering is attached to the outer diameter of the component and is adapted to seal the pocket from outside debris, the pocket having a bottom floor and a plurality of side walls. An open cavity is formed in at least one of the side walls.
- The pocket may be annular and may encompass the entire outer diameter. A plurality of pockets may be formed in the outer diameter and may be adapted to receive downhole instrumentation. The side walls may be sloped. A plurality of open cavities may be formed in at least one of the side walls. An open cavity may be formed in a plurality of the side walls. The cavity may comprise a step with a rounded geometry. The cavity may comprise rounded borders. The cavity may be generally concave. The cavity may comprise a convex portion A ratio of a depth of the cavity to a depth of the pocket ranges between 0.2 to 1, and 1.5 to 1.
- A portion of the downhole instrumentation may be disposed within the cavity. A portion of an electrically conductive conduit in electrical communication with the downhole instrumentation may be disposed within the cavity. The electrically conductive conduit may be in electrical communication with surface equipment. The downhole instrumentation may be part of a closed-loop system.
- The covering may be adapted to seal the plurality of pockets from outside debris. The covering may be a sleeve disposed around the outer diameter of the tubular body. The covering may be a plate fastened to the outer diameter of the tubular body. The covering may comprise a plurality of grooves adapted to stretch and/or flex with the tubular body. The tubular body may be selected from the group consisting of drill pipe, drill collars, reamers, subs, swivels, production pipe, injector pipe, horizontal drilling pipe, jars, hammers, stabilizers, or combinations thereof.
-
FIG. 1 is a cross-sectional diagram of an embodiment of a tool string suspended in a bore hole. -
FIG. 2 is a cross-sectional diagram of an embodiment of a downhole tool string component. -
FIG. 3 is a cross-sectional diagram of an embodiment of a pocket in a downhole tool string component. -
FIG. 4 is a cross-sectional diagram of another embodiment of a pocket in a downhole tool string component. -
FIG. 5 is a perspective diagram of another embodiment of a downhole tool string component. -
FIG. 6 is a cross-sectional diagram of another embodiment of a pocket in a downhole tool string component. -
FIG. 7 is a cross-sectional diagram of another embodiment of a pocket in a downhole tool string component. -
FIG. 8 is a cross-sectional diagram of another embodiment of a pocket in a downhole tool string component. -
FIG. 9 is a cross-sectional diagram of another embodiment of a pocket in a downhole tool string component. -
FIG. 10 is a cross-sectional diagram of another embodiment of a pocket in a downhole tool string component. -
FIG. 11 is a cross-sectional diagram of another embodiment of a pocket in a downhole tool string component. -
FIG. 12 is a cross-sectional diagram of another embodiment of a pocket in a downhole tool string component. -
FIG. 13 is a cross-sectional diagram of another embodiment of a pocket in a downhole tool string component. -
FIG. 14 is a cross-sectional diagram of another embodiment of a pocket in a downhole tool string component. -
FIG. 15 is a cross-sectional diagram of another embodiment of a pocket in a downhole tool string component. -
FIG. 16 is a cross-sectional diagram of an embodiment of a plurality of pockets in a downhole tool string component. -
FIG. 17 is a perspective diagram of another embodiment of a pocket in a downhole tool string component. -
FIG. 1 is an embodiment of atool string 100 suspended by aderrick 101. A bottom-hole assembly 102 is located at the bottom of abore hole 103 and comprises adrill bit 104. As thedrill bit 104 rotates downhole thetool string 100 advances farther into the earth. The tool string may penetrate soft or hardsubterranean formations 105. The bottom-hole assembly 102 and/or downhole components may comprise data acquisition devices which may ether data. The data may be sent to the surface via a transmission system to adata swivel 106. The data swivel 106 may send the data to the surface equipment. Further, the surface equipment may send data and/or power to downhole tools and/or the bottom-hole assembly 102. - Electronic equipment and/or other downhole instrumentations may be disposed within the downhole tools, as in the embodiment of
FIG. 2 . The electronic equipment may be disposed withinpockets 200 formed in anouter diameter 201 of a downholetool string component 202. Thepockets 200 may be covered and protected by a covering such as asleeve 203. Thesleeve 203 may be a compliant, metal sleeve, such as is disclosed in U.S. patent application Ser. No. 11/164,572, which is herein incorporated by reference for all that it contains. Thesleeve 203 forms a seal over thepockets 200 such that debris and drilling fluids cannot enter the pockets, protecting the electronic equipment from drilling mud and other materials which may damage them. Thesleeve 203 may comprise a plurality ofgrooves 204 adapted to allow thesleeve 203 to stretch and/or flex with thecomponent 202, which may be particularly useful in directional drilling operations. - The electronic equipment may comprise batteries, logic circuits, sensors, or other electronics suitable for downhole environments. The batteries may be used to power other downhole electronics or motors. The sensors may include pressure sensors, strain sensors, flow sensors, acoustic sensors, temperature sensors, torque sensors, position sensors, vibration sensors, or any combination thereof for monitoring conditions of the
tool string component 202 or conditions in the bore hole. The logic circuits may be used to control a closed-loop system in one or more downhole components. - At least one of the
pockets 200 may comprise anopen cavity 300 formed in aside wall 301 of thepocket 200, as in the embodiment ofFIG. 3 , with an overhangingportion 302 of the component between thecavity 300 and theouter diameter 201. Right angles joining abottom floor 303 of thepocket 200 with theside wall 301 may cause stress risers in thedownhole component 202, which may cause thecomponent 202 to crack or weaken. The open cavity may comprise a characteristic of adding flexibility to the downhole tool string component. The added flexibility may be along theaxis 251 of the downhole tool string component. In addition to adding flexibility to the to component, it may also shorten the pocket size, since the same amount of electronics may be disposed within a smaller pocket with the open cavity. - The
open cavity 300 preferably comprises rounded borders in order to reduce the number of stress risers in thecomponent 200. The rounded portions may comprise a radius or conic from 0.125 inches to 1 inch. The rounded portions may also comprise a conic form factor where 0.5 point to point and 1 is point to intersect and v(2)/2 defining a round our concave conic form factors may have a range from 0.6 to 0.9. Theopen cavity 300 may comprise astep 304 up from thebottom floor 303 with a rounded geometry in order to distribute torque and other forces across a larger area. - A filler material 360 is fitted within the open cavity which supports the overhang from the ambient downhole pressure. The filler material may be made out of steel and comprise a geometry which approximates the geometry of the open cavity. Other suitable filler materials may be carbide, titanium, rubber, ceramics, metals, composites, or combinations thereof.
- The
sleeve 203 may comprisegrooves 204 on both an inner andouter surface hard casings 307 within thepocket 200 such that the electronics may be protected from jostling, vibrating, or pressure from the bore in addition to the protection given by thesleeve 203. Aportion 308 of the electronics or downhole instrumentation may be disposed within thecavity 300. This may help anchor the electronics within thepocket 200. Sensors may also be disposed within the cavity or within another part of thepocket 200, which may aid in monitoring the amount of torque or pressure applied to the overhangingportion 302 or thesleeve 203. The open cavity may also comprise aback end 250. Theback end 250 is the portion of thecavity 300 located generally farthest from anopening 350 of thecavity 300. - A portion of an electrically
conductive conduit 400 may be disposed within thecavity 300, as in the embodiment ofFIG. 4 , and may protrude from theback end 250 of thecavity 300. The conduit may comprise a coaxial cable, twisted pair of wires, copper wires, fiber optic lines, or combinations thereof. Theconduit 400 may extend into thecavity 300 from abore 401 in the wall of thecomponent 202 and be in electrical communication with the downhole instrumentation. Theconduit 401 may extend through a length of thecomponent 202 to be connected to other downhole instruments, or it may connect to an electrically conductive conduit in an adjacent tool string component. - The
conduit 401 may be part of a downhole electrical transmission system A suitable transmission system for the current invention is disclosed in U.S. Pat. No. 6,670,880 to Hall, which is herein incorporated by reference for all that it contains. The transmission system may be capable of transmitting data and power to the downhole instrumentation simultaneously through the transmission system, either from the surface or from another component in the drill string. - The covering may be a
curved plate 500 fastened to thecomponent 202, as in the embodiment ofFIG. 5 . Theplate 500 may be a metal durable enough to resist wear due to downhole conditions and flexible enough to stretch or bend with thecomponent 202. Theplate 500 may or may not be disposed around the entireouter diameter 201 of thecomponent 202, depending on the size of the pocket. - The
plate 500 may be fastened to theouter diameter 201 of the component, or it may be fastened within a recess formed in theouter diameter 201 and surrounding the pocket. An upper surface of theplate 500 may be flush with theouter diameter 201 of thecomponent 202. This may prevent theplate 500 from catching on the formation while drilling or removing the drill string from thebore hole 103. - The
side wall 301 may comprise a plurality ofopen cavities 300, as in the embodiments ofFIGS. 6 and 7 . Thecavities 300 may comprise equal or different depths. Thecavity 300 may be formed straight into theside wall 301, as in the embodiment ofFIG. 8 . Theside wall 301 may also be sloped at any angle with respect to thebottom floor 303 of thepocket 200. Thecavity 300 may simply be a small concave recess, with a ratio of thedepth 900 of the cavity to adepth 901 of the pocket being as low as 0.2 to 1, as in the embodiment ofFIG. 9 , though in some embodiments the ratio may be as high as 1.5 to 1. Thecavity 300 may comprise aconvex portion 1000, as in the embodiment ofFIG. 10 . Thecavity 300 may comprise a slopedportion 1100 up from thebottom floor 303 of thepocket 200, as in the embodiment ofFIG. 11 , or from the overhangingportion 302. Thecavity 300 may comprise a plurality ofsuccessive steps 304 up from thebottom floor 303, as in the embodiment ofFIG. 12 , preferably comprising rounded geometries. Thecavity 300 may comprise astep 304 from the overhangingportion 302, as in the embodiment ofFIG. 13 . Thecavity 300 may also comprise astep 304 from both the overhangingportion 302 and thebottom floor 303, as in the embodiment ofFIG. 14 . - A plurality of
side walls 301 in thepocket 200 may compriseopen cavities 300, as in the embodiment ofFIG. 15 . The covering 1600 may cover asingle pocket 200, or a plurality ofpockets 200 in asingle component 202, as in the embodiment ofFIG. 16 , though eachpocket 200 may be sealed by anindividual covering 1600. The downhole instrumentation in eachpocket 200 may be in electrical communication with each other. Thecavity 300 may be formed in a plurality of theside walls 301 of thepocket 200, as in the embodiment ofFIG. 17 , when thepocket 200 does not encompass the entireouter diameter 201 of thecomponent 202. - Whereas the present invention has been described in particular relation to the drawings attached hereto, it should be understood that other and further modifications apart from those shown or suggested herein, may be made within the scope and spirit of the present invention.
Claims (20)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/679,529 US20080202742A1 (en) | 2007-02-27 | 2007-02-27 | Open Cavity in a Pocket of a Downhole Tool String Component |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/679,529 US20080202742A1 (en) | 2007-02-27 | 2007-02-27 | Open Cavity in a Pocket of a Downhole Tool String Component |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IL2007/001189 A-371-Of-International WO2009040783A2 (en) | 2007-09-25 | 2007-09-25 | Improved airway tube |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/616,626 Continuation US10926052B2 (en) | 2007-09-25 | 2017-06-07 | Airway tube |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080202742A1 true US20080202742A1 (en) | 2008-08-28 |
Family
ID=39714569
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/679,529 Abandoned US20080202742A1 (en) | 2007-02-27 | 2007-02-27 | Open Cavity in a Pocket of a Downhole Tool String Component |
Country Status (1)
Country | Link |
---|---|
US (1) | US20080202742A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2948145A1 (en) * | 2009-07-20 | 2011-01-21 | Vam Drilling France | DRILLING ROD AND CORRESPONDING DRILL ROD TRAIN |
US20120055710A1 (en) * | 2009-02-12 | 2012-03-08 | Halliburton Energy Services, Inc. | Drill String Tubular with a Detection System Mounted Therein |
US20150337645A1 (en) * | 2009-05-20 | 2015-11-26 | Halliburton Energy Services, Inc. | Downhole sensor tool with a sealed sensor outsert |
WO2020236208A1 (en) * | 2019-05-20 | 2020-11-26 | Halliburton Energy Services, Inc. | Unitized downhole tool segment |
US11248423B2 (en) | 2019-06-30 | 2022-02-15 | Halliburton Energy Service, Inc. | Drilling tool with thread profile |
US11913325B2 (en) | 2019-05-20 | 2024-02-27 | Halliburton Energy Services, Inc. | Unitized downhole tool segment |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4628995A (en) * | 1985-08-12 | 1986-12-16 | Panex Corporation | Gauge carrier |
US5563512A (en) * | 1994-06-14 | 1996-10-08 | Halliburton Company | Well logging apparatus having a removable sleeve for sealing and protecting multiple antenna arrays |
US20030131992A1 (en) * | 2002-01-14 | 2003-07-17 | Tod Michael | Sonde housing and method of manufacture |
US20030137429A1 (en) * | 2000-05-22 | 2003-07-24 | Schlumberger Technology Corporation | Downhole tubular with openings for signal passage |
US20030147360A1 (en) * | 2002-02-06 | 2003-08-07 | Michael Nero | Automated wellbore apparatus |
US6655452B2 (en) * | 2001-09-21 | 2003-12-02 | Fred Zillinger | Downhole gauge carrier apparatus |
US20050189947A1 (en) * | 2004-03-01 | 2005-09-01 | Pathfinder Energy Services, Inc. | Azimuthally focused electromagnetic measurement tool |
US20050257961A1 (en) * | 2004-05-18 | 2005-11-24 | Adrian Snell | Equipment Housing for Downhole Measurements |
US7048063B2 (en) * | 2001-09-26 | 2006-05-23 | Weatherford/Lamb, Inc. | Profiled recess for instrumented expandable components |
US7377315B2 (en) * | 2005-11-29 | 2008-05-27 | Hall David R | Complaint covering of a downhole component |
-
2007
- 2007-02-27 US US11/679,529 patent/US20080202742A1/en not_active Abandoned
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4628995A (en) * | 1985-08-12 | 1986-12-16 | Panex Corporation | Gauge carrier |
US5563512A (en) * | 1994-06-14 | 1996-10-08 | Halliburton Company | Well logging apparatus having a removable sleeve for sealing and protecting multiple antenna arrays |
US20030137429A1 (en) * | 2000-05-22 | 2003-07-24 | Schlumberger Technology Corporation | Downhole tubular with openings for signal passage |
US6655452B2 (en) * | 2001-09-21 | 2003-12-02 | Fred Zillinger | Downhole gauge carrier apparatus |
US7048063B2 (en) * | 2001-09-26 | 2006-05-23 | Weatherford/Lamb, Inc. | Profiled recess for instrumented expandable components |
US20030131992A1 (en) * | 2002-01-14 | 2003-07-17 | Tod Michael | Sonde housing and method of manufacture |
US20030147360A1 (en) * | 2002-02-06 | 2003-08-07 | Michael Nero | Automated wellbore apparatus |
US20050189947A1 (en) * | 2004-03-01 | 2005-09-01 | Pathfinder Energy Services, Inc. | Azimuthally focused electromagnetic measurement tool |
US20050257961A1 (en) * | 2004-05-18 | 2005-11-24 | Adrian Snell | Equipment Housing for Downhole Measurements |
US7377315B2 (en) * | 2005-11-29 | 2008-05-27 | Hall David R | Complaint covering of a downhole component |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120055710A1 (en) * | 2009-02-12 | 2012-03-08 | Halliburton Energy Services, Inc. | Drill String Tubular with a Detection System Mounted Therein |
US9303506B2 (en) * | 2009-02-12 | 2016-04-05 | Halliburton Energy Services, Inc. | Drill string tubular with a detection system mounted therein |
US20150337645A1 (en) * | 2009-05-20 | 2015-11-26 | Halliburton Energy Services, Inc. | Downhole sensor tool with a sealed sensor outsert |
US10280735B2 (en) * | 2009-05-20 | 2019-05-07 | Halliburton Energy Services, Inc. | Downhole sensor tool with a sealed sensor outsert |
FR2948145A1 (en) * | 2009-07-20 | 2011-01-21 | Vam Drilling France | DRILLING ROD AND CORRESPONDING DRILL ROD TRAIN |
WO2011010016A3 (en) * | 2009-07-20 | 2011-05-19 | Vam Drilling France | Drill pipe and corresponding drill fitting |
CN102482921A (en) * | 2009-07-20 | 2012-05-30 | 瓦姆钻杆钻具法国公司 | Drill pipe and corresponding drill fitting |
US8915315B2 (en) | 2009-07-20 | 2014-12-23 | Vam Drilling France | Drill pipe and corresponding drill fitting |
WO2020236208A1 (en) * | 2019-05-20 | 2020-11-26 | Halliburton Energy Services, Inc. | Unitized downhole tool segment |
US11913325B2 (en) | 2019-05-20 | 2024-02-27 | Halliburton Energy Services, Inc. | Unitized downhole tool segment |
US11248423B2 (en) | 2019-06-30 | 2022-02-15 | Halliburton Energy Service, Inc. | Drilling tool with thread profile |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10100586B2 (en) | Downhole electrical connector | |
US8091627B2 (en) | Stress relief in a pocket of a downhole tool string component | |
US7098802B2 (en) | Signal connection for a downhole tool string | |
US7497254B2 (en) | Pocket for a downhole tool string component | |
US7880640B2 (en) | Wellbore communication system | |
US20080202742A1 (en) | Open Cavity in a Pocket of a Downhole Tool String Component | |
US7377315B2 (en) | Complaint covering of a downhole component | |
US8201645B2 (en) | Downhole tool string component that is protected from drilling stresses | |
US11149536B2 (en) | Measurement of torque with shear stress sensors | |
US10385683B1 (en) | Deepset receiver for drilling application | |
US11840893B2 (en) | Direct contact telemetry system for wired drill pipe | |
US11066927B2 (en) | Wired drill pipe connector and sensor system | |
EP2366865B1 (en) | Offset joint for downhole tools | |
US11299977B2 (en) | Recessed pockets for a drill collar | |
CN114761661A (en) | Electronic connections in drill strings and related systems and methods |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: HALL, DAVID R., MR., UTAH Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:DAHLGREN, SCOTT, MR.;TURNER, PAULA, MS.;REEL/FRAME:018937/0677;SIGNING DATES FROM 20070221 TO 20070226 Owner name: HALL, DAVID R., MR.,UTAH Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:DAHLGREN, SCOTT, MR.;TURNER, PAULA, MS.;SIGNING DATES FROM 20070221 TO 20070226;REEL/FRAME:018937/0677 |
|
AS | Assignment |
Owner name: NOVADRILL, INC., UTAH Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HALL, DAVID R.;REEL/FRAME:021701/0758 Effective date: 20080806 Owner name: NOVADRILL, INC.,UTAH Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HALL, DAVID R.;REEL/FRAME:021701/0758 Effective date: 20080806 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |
|
AS | Assignment |
Owner name: SCHLUMBERGER TECHNOLOGY CORPORATION,TEXAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:NOVADRILL, INC.;REEL/FRAME:024055/0378 Effective date: 20100121 Owner name: SCHLUMBERGER TECHNOLOGY CORPORATION, TEXAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:NOVADRILL, INC.;REEL/FRAME:024055/0378 Effective date: 20100121 |