US20100263930A1 - Impact Powered Transmitter For Directional Drilling - Google Patents
Impact Powered Transmitter For Directional Drilling Download PDFInfo
- Publication number
- US20100263930A1 US20100263930A1 US12/823,635 US82363510A US2010263930A1 US 20100263930 A1 US20100263930 A1 US 20100263930A1 US 82363510 A US82363510 A US 82363510A US 2010263930 A1 US2010263930 A1 US 2010263930A1
- Authority
- US
- United States
- Prior art keywords
- transmitter
- tool
- sonde
- housing
- mole
- 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
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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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0085—Adaptations of electric power generating means for use in boreholes
-
- 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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
- E21B4/14—Fluid operated hammers
-
- 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
- E21B47/02—Determining slope or direction
- E21B47/024—Determining slope or direction of devices in the borehole
-
- 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
- E21B47/13—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 by electromagnetic energy, e.g. radio frequency
Definitions
- the invention relates to pneumatic impact-type tools (moles) that include an onboard sonde for determining the position of the mole during the boring operation.
- pneumatic impact-type tools for horizontal boring is well known.
- These tools generally include a cylindrical body with a tapered nose, a compressed air supply connection, a piston or striker disposed for reciprocal movement within the tool, and an air distributing mechanism for causing the striker to move rapidly back and forth.
- the striker reciprocates within the body striking a front interior surface of the tool body, forcing the tool forward into the earth.
- U.S. patent application Ser. No. 5,025,868 the disclosure of which is incorporated herein by reference for all purposes.
- Pneumatic impact mole users have long sought an easy and effective way of locating a mole during boring operations While precisely locating the mole is not needed in every boring operation, on many occasions it is desirable to know the path, depth or location of the mole.
- the operator typically walked over the ground above the bore and based on the observed intensity of the seismic vibrations induced by operation, judged where the mole is located. This method worked with an accuracy of plus/minus two to three feet in a horizontal direction. The method however, did not provide a reliable indication of the depth of the mole.
- a sensor and transmitting device (“sonde”) is attached to the boring tool to enable the operator to locate the tool. See, for example, Mercer U.S. Pat. Nos. 5,155,442 and 5,633,589.
- Prior art sondes located in the body of a mole included a transmitter and rechargeable batteries, formerly available from Radio Detection Corp.
- the sonde is typically mounted in a pocket of the steel front anvil which projects forward from the body of the mole. The pocket is closed with a plastic door that traps the sonde in the pocket and is transparent with respect to the emission of a signal from the transmitter.
- the signal from the sonde is detected and analyzed with a walk-over receiver well known in the art of Horizontal Directional Drilling (HDD).
- HDD Horizontal Directional Drilling
- a third method is to attach the sonde to the air supply hose of a mole.
- the sizable projection created by the sonde and its housing impedes operating the mole in the reverse direction.
- the bulbous projection of the sonde and housing makes it difficult to rotate the air supply hose to shift the tool into the reverse direction. Even when the mole is successfully reversed, the projection impedes rearward progress, often causing the mole to back over the supply hose, requiring excavation of the mole.
- the invention provides pneumatic earth boring tool with a self-contained sonde module which eliminates the need to remove the sonde from the tool house for recharging.
- the sonde module includes a transmitter and requires a transmission window through a medium transparent to radio signals.
- the transmitter is powered by a linear generator incorporated into the module that includes a permanent magnet or magnets that reciprocate along the axis of the mole, either as a result of impact and/or by cycling pneumatic forces.
- the magnets traverse the length of a wound wire coil inducing a current in the coil.
- the electrical energy produced in this manner is used to charge an electrical storage device such as a battery or condenser and power the transmitter.
- a pneumatic earth boring tool includes an elongate body having a nose and a striker disposed for reciprocation in the housing. Compressed air supplied through an air supply connection reciprocates the striker to drive the tool through the earth.
- a sonde housing, including a magnet tube is mounted in an axially extending cavity formed in the nose for slidably retaining a permanent magnet.
- a coil surrounds the tube such that an electrical current is generated when the magnet slides through the coil.
- Elastomeric repulsing elements such as rubber cushions or coil springs are positioned at each end of the tube to repulse the magnet when it strikes the element during operation.
- a rectifier transforms the alternating current generated when the magnet slides through the coil to produce direct current which is used to power a transmitter that generates a signal useable for locating the tool in the earth.
- An energy storage device such as a capacitor and/or battery may be provided to store electrical energy generated by the magnet and coil during operation of the tool.
- the sonde housing is formed from a plastic material and one or more of the coil, transmitter, rectifier and energy storage device may be imbedded in the plastic material.
- the sonde housing is sealed with an end cap and may be glued or otherwise secured in the axially extending cavity.
- FIG. 1 is a partial perspective view of a pneumatic earth boring tool incorporating a sonde module of the invention
- FIG. 2 is a partial perspective view of the nose section of the tool of FIG. 1 ;
- FIG. 3 is side view of the nose section of the tool of FIG. 1 ;
- FIG. 4 is a front view of the nose section of the tool of FIG. 1 ;
- FIG. 5 is a top view of the nose section of the tool of FIG. 1 ;
- FIG. 6 is an end view of the nose section of the tool of FIG. 1 ;
- FIG. 7 is a partial lengthwise section of the nose section of the tool of FIG. 1 taken along line A-A of FIG. 5 .
- a pneumatic earth boring tool 10 in accordance with the invention includes a cylindrical housing 12 having a nose 14 , a compressed air supply connection 16 at the rear end 18 of the housing and a frontwardly tapered shoulder 20 extending rearwardly from nose 14 .
- a striker is mounted in housing 12 along with an air distribution system configured to reciprocate the striker back and forth in the housing to force the tool forward through the earth during boring operations.
- the air distribution system of tool 12 is configured to allow the tool to be operated in both forward and reverse modes such as disclosed in commonly assigned U.S. Pat. No. 6,953,095 issued Oct. 11, 2005 to Randa and U.S. Pat. No. 5,505,270 issued Apr. 9, 1996 to Wentworth, the contents of which are incorporated by reference for all purposes.
- nose 14 includes a forward end section 22 with flat sidewalls 24 , a curved tip 26 and a rear end 30 .
- a rearwardly opening threaded socket 32 is formed in rear end 30 for attaching nose 14 to housing 12 .
- a cylindrical, axially extending sonde cavity 34 extends forward from socket 32 along the central axis of nose 14 . Since nose 14 is typically made of steel, a pair of opposed transmission windows or slots 36 are formed through a sidewall 38 of the nose 14 so that a radiofrequency signal generated by a sonde positioned in sonde cavity 34 can be detected a walk-over or similar receiver.
- slots 36 may be filled with a plastic or a potting material to seal cavity 34 while simultaneously allowing a radio frequency signal to be transmitted through housing 12 .
- a radio frequency signal may be transmitted through housing 12 .
- two radially opposed slots 36 are formed in nose 14 , a single slot or a plurality of slots at different radial positions may be employed.
- a sonde module 40 including a sonde housing 42 , wireless transmitter 44 , power storage unit 46 , rectifier 48 and linear generator 50 is positioned in cavity 34 .
- Linear generators are known power sources that utilize a stator and/or rotor traveling in a linear path to produce electric power. See, e.g., U.S. Pat. No. 5,975,714 issued Nov. 2, 1999 to Vetorino et al., the disclosure of which is incorporated herein by reference for all purposes.
- Housing 42 is preferably formed from a hard, nonmetal material such as an appropriate plastic and includes a magnet tube 52 made of plastic or non-electrically conductive metal having a central passage 54 .
- sonde housing 42 is glued into position in sonde cavity 34 of nose 14 and closed with an end cap 56 that is glued or otherwise fastened in position to seal housing 42 .
- One or more permanent magnets 58 are slidably disposed in tube 52 such that the magnet slides in an axially direction back and forth in passage 54 when tool 10 moves in response to reciprocation of the striker.
- a magnet travel stop 60 is positioned at each end of tube 52 to prevent damage to housing 42 and/or magnet 58 when the magnet collides with the end of the tube.
- Magnet travel stops 60 are preferably formed from an elastomeric material such as a natural or synthetic rubber, but may also include a spring or a fixed magnet oriented such that the polarity of the fixed magnet opposes that of the sliding magnet 58 .
- a coil 62 typically copper wire, is wound around passage 54 such that magnet 58 passes thorough the coil as it slides through tube 50 , generating an alternating electric current.
- coil 60 is imbedded in sonde housing 42 by potting or during injection molding in the manufacturing process.
- transmitter 44 , power storage unit 46 and rectifier 48 may also be embedded in the housing material in the same manner to protect the electronic components from shock during operation of the tool as well as sealing the components against contamination.
- the current produced by magnet 58 passing through coil 60 is conducted to rectifier 48 which converts the alternating current to direct current used to power transmitter 44 and/or charge power storage unit 46 .
- Power storage unit 46 may be a battery, a capacitor or both. In one embodiment, power storage unit 46 is omitted and power is supplied directly from rectifier 48 to transmitter 44 .
Abstract
A pneumatic earth boring tool includes a cylindrical body, a transmitter mounted in the body, the transmitter generating a signal usable for operating the earth boring tool, a linear generator mounted in the body for generating an electrical current to power the transmitter and a rectifier for converting the electrical current produced by the linear generator to direct current. Electrical power generated by the linear generator is used to power the transmitter to generate a signal useful for locating the tool.
Description
- The invention relates to pneumatic impact-type tools (moles) that include an onboard sonde for determining the position of the mole during the boring operation.
- The use of pneumatic impact-type tools (moles) for horizontal boring is well known. These tools generally include a cylindrical body with a tapered nose, a compressed air supply connection, a piston or striker disposed for reciprocal movement within the tool, and an air distributing mechanism for causing the striker to move rapidly back and forth. The striker reciprocates within the body striking a front interior surface of the tool body, forcing the tool forward into the earth. One such tool is disclosed in U.S. patent application Ser. No. 5,025,868, the disclosure of which is incorporated herein by reference for all purposes.
- Pneumatic impact mole users have long sought an easy and effective way of locating a mole during boring operations While precisely locating the mole is not needed in every boring operation, on many occasions it is desirable to know the path, depth or location of the mole. In the past, the operator typically walked over the ground above the bore and based on the observed intensity of the seismic vibrations induced by operation, judged where the mole is located. This method worked with an accuracy of plus/minus two to three feet in a horizontal direction. The method however, did not provide a reliable indication of the depth of the mole.
- The desire and need to be able to determine the position of a mole while drilling led to the development of electronic locating devices for use in horizontal underground boring operations. A sensor and transmitting device (“sonde”) is attached to the boring tool to enable the operator to locate the tool. See, for example, Mercer U.S. Pat. Nos. 5,155,442 and 5,633,589. Prior art sondes located in the body of a mole included a transmitter and rechargeable batteries, formerly available from Radio Detection Corp. The sonde is typically mounted in a pocket of the steel front anvil which projects forward from the body of the mole. The pocket is closed with a plastic door that traps the sonde in the pocket and is transparent with respect to the emission of a signal from the transmitter. The signal from the sonde is detected and analyzed with a walk-over receiver well known in the art of Horizontal Directional Drilling (HDD).
- One weakness or drawback of designs including a sonde enclosed in the tool body is the need to remove and recharge the battery powering the sonde. Failure to consistently recharge the battery results in a weakened or discharged battery leaving the sonde incapable of transmitting a signal. However, since not every boring operation requires the use of a sonde, the probability of the sonde being charged on a consistent basis is low. Consequently, the sonde is often inoperable when needed to provide information on the depth or location of a mole.
- A third method, readily available but infrequently used, is to attach the sonde to the air supply hose of a mole. Again, forethought is required and the sizable projection created by the sonde and its housing impedes operating the mole in the reverse direction. The bulbous projection of the sonde and housing makes it difficult to rotate the air supply hose to shift the tool into the reverse direction. Even when the mole is successfully reversed, the projection impedes rearward progress, often causing the mole to back over the supply hose, requiring excavation of the mole.
- The invention provides pneumatic earth boring tool with a self-contained sonde module which eliminates the need to remove the sonde from the tool house for recharging. The sonde module includes a transmitter and requires a transmission window through a medium transparent to radio signals. In accordance with the invention, the transmitter is powered by a linear generator incorporated into the module that includes a permanent magnet or magnets that reciprocate along the axis of the mole, either as a result of impact and/or by cycling pneumatic forces. The magnets traverse the length of a wound wire coil inducing a current in the coil. The electrical energy produced in this manner is used to charge an electrical storage device such as a battery or condenser and power the transmitter.
- In one aspect, a pneumatic earth boring tool according to the invention includes an elongate body having a nose and a striker disposed for reciprocation in the housing. Compressed air supplied through an air supply connection reciprocates the striker to drive the tool through the earth. A sonde housing, including a magnet tube is mounted in an axially extending cavity formed in the nose for slidably retaining a permanent magnet. A coil surrounds the tube such that an electrical current is generated when the magnet slides through the coil. Elastomeric repulsing elements such as rubber cushions or coil springs are positioned at each end of the tube to repulse the magnet when it strikes the element during operation. A rectifier transforms the alternating current generated when the magnet slides through the coil to produce direct current which is used to power a transmitter that generates a signal useable for locating the tool in the earth.
- An energy storage device such as a capacitor and/or battery may be provided to store electrical energy generated by the magnet and coil during operation of the tool. In one variation, the sonde housing is formed from a plastic material and one or more of the coil, transmitter, rectifier and energy storage device may be imbedded in the plastic material. The sonde housing is sealed with an end cap and may be glued or otherwise secured in the axially extending cavity.
-
FIG. 1 is a partial perspective view of a pneumatic earth boring tool incorporating a sonde module of the invention; -
FIG. 2 is a partial perspective view of the nose section of the tool ofFIG. 1 ; -
FIG. 3 is side view of the nose section of the tool ofFIG. 1 ; -
FIG. 4 is a front view of the nose section of the tool ofFIG. 1 ; -
FIG. 5 is a top view of the nose section of the tool ofFIG. 1 ; -
FIG. 6 , is an end view of the nose section of the tool ofFIG. 1 ; and -
FIG. 7 is a partial lengthwise section of the nose section of the tool ofFIG. 1 taken along line A-A ofFIG. 5 . - Referring now to the Figures, a pneumatic earth
boring tool 10 in accordance with the invention includes acylindrical housing 12 having anose 14, a compressedair supply connection 16 at therear end 18 of the housing and a frontwardlytapered shoulder 20 extending rearwardly fromnose 14. A striker is mounted inhousing 12 along with an air distribution system configured to reciprocate the striker back and forth in the housing to force the tool forward through the earth during boring operations. Preferably, the air distribution system oftool 12 is configured to allow the tool to be operated in both forward and reverse modes such as disclosed in commonly assigned U.S. Pat. No. 6,953,095 issued Oct. 11, 2005 to Randa and U.S. Pat. No. 5,505,270 issued Apr. 9, 1996 to Wentworth, the contents of which are incorporated by reference for all purposes. - Turning to
FIGS. 2-7 ,nose 14 includes aforward end section 22 withflat sidewalls 24, acurved tip 26 and arear end 30. A rearwardly opening threadedsocket 32 is formed inrear end 30 for attachingnose 14 tohousing 12. A cylindrical, axially extendingsonde cavity 34 extends forward fromsocket 32 along the central axis ofnose 14. Sincenose 14 is typically made of steel, a pair of opposed transmission windows orslots 36 are formed through asidewall 38 of thenose 14 so that a radiofrequency signal generated by a sonde positioned insonde cavity 34 can be detected a walk-over or similar receiver. As illustrated,slots 36 may be filled with a plastic or a potting material to sealcavity 34 while simultaneously allowing a radio frequency signal to be transmitted throughhousing 12. Although as shown, two radially opposedslots 36 are formed innose 14, a single slot or a plurality of slots at different radial positions may be employed. - As best illustrated in
FIG. 7 , asonde module 40 including asonde housing 42,wireless transmitter 44,power storage unit 46,rectifier 48 andlinear generator 50 is positioned incavity 34. Linear generators are known power sources that utilize a stator and/or rotor traveling in a linear path to produce electric power. See, e.g., U.S. Pat. No. 5,975,714 issued Nov. 2, 1999 to Vetorino et al., the disclosure of which is incorporated herein by reference for all purposes.Housing 42 is preferably formed from a hard, nonmetal material such as an appropriate plastic and includes amagnet tube 52 made of plastic or non-electrically conductive metal having acentral passage 54. In one embodiment,sonde housing 42 is glued into position insonde cavity 34 ofnose 14 and closed with anend cap 56 that is glued or otherwise fastened in position to sealhousing 42. - One or more
permanent magnets 58 are slidably disposed intube 52 such that the magnet slides in an axially direction back and forth inpassage 54 whentool 10 moves in response to reciprocation of the striker. Amagnet travel stop 60 is positioned at each end oftube 52 to prevent damage tohousing 42 and/ormagnet 58 when the magnet collides with the end of the tube. Magnet travel stops 60 are preferably formed from an elastomeric material such as a natural or synthetic rubber, but may also include a spring or a fixed magnet oriented such that the polarity of the fixed magnet opposes that of the slidingmagnet 58. - A
coil 62, typically copper wire, is wound aroundpassage 54 such thatmagnet 58 passes thorough the coil as it slides throughtube 50, generating an alternating electric current. In one embodiment,coil 60 is imbedded insonde housing 42 by potting or during injection molding in the manufacturing process. One of more oftransmitter 44,power storage unit 46 andrectifier 48 may also be embedded in the housing material in the same manner to protect the electronic components from shock during operation of the tool as well as sealing the components against contamination. - The current produced by
magnet 58 passing throughcoil 60 is conducted torectifier 48 which converts the alternating current to direct current used topower transmitter 44 and/or chargepower storage unit 46.Power storage unit 46 may be a battery, a capacitor or both. In one embodiment,power storage unit 46 is omitted and power is supplied directly fromrectifier 48 totransmitter 44. - While certain embodiments of the invention have been illustrated for the purposes of this disclosure, numerous changes in the method and apparatus of the invention presented herein may be made by those skilled in the art, such changes being embodied within the scope and spirit of the present invention as defined in the appended claims.
Claims (1)
1. A pneumatic earth boring tool comprising:
a cylindrical body:
a transmitter mounted in the body, the transmitter generating a signal usable for operating the earth boring tool, wherein the signal generated by the transmitter comprises location, pitch and yaw information; and
a linear generator mounted in the body for generating an electrical current to power the transmitter; wherein the generator produces the current in response to movement caused by operation of the tool.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/823,635 US20100263930A1 (en) | 2008-04-08 | 2010-06-25 | Impact Powered Transmitter For Directional Drilling |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/080,972 US20090250265A1 (en) | 2008-04-08 | 2008-04-08 | Impact powered transmitter for directional drilling |
US12/823,635 US20100263930A1 (en) | 2008-04-08 | 2010-06-25 | Impact Powered Transmitter For Directional Drilling |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US12/080,972 Continuation US20090250265A1 (en) | 2008-04-08 | 2008-04-08 | Impact powered transmitter for directional drilling |
Publications (1)
Publication Number | Publication Date |
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US20100263930A1 true US20100263930A1 (en) | 2010-10-21 |
Family
ID=41132221
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US12/080,972 Abandoned US20090250265A1 (en) | 2008-04-08 | 2008-04-08 | Impact powered transmitter for directional drilling |
US12/823,635 Abandoned US20100263930A1 (en) | 2008-04-08 | 2010-06-25 | Impact Powered Transmitter For Directional Drilling |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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US12/080,972 Abandoned US20090250265A1 (en) | 2008-04-08 | 2008-04-08 | Impact powered transmitter for directional drilling |
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US (2) | US20090250265A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130049492A1 (en) * | 2008-12-10 | 2013-02-28 | Juan Andujar | System for Converting Tidal Wave Energy Into Electric Energy |
WO2014051575A1 (en) * | 2012-09-26 | 2014-04-03 | Halliburton Energy Services, Inc. | Generator driven by drill pipe |
US9088187B2 (en) | 2011-10-28 | 2015-07-21 | Juan Andujar | Hybrid electro magnetic hydro kinetic high pressure propulsion generator |
US9290994B2 (en) | 2011-12-29 | 2016-03-22 | Charles T. Webb | Sonde housing and bit body arrangement for horizontal directional drilling |
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US3448305A (en) * | 1966-10-11 | 1969-06-03 | Aquitaine Petrole | Apparatus for producing and utilising electrical energy for use in drilling operations |
US4491738A (en) * | 1981-11-24 | 1985-01-01 | Shell Internationale Research Maatschappij, B.V. | Means for generating electricity during drilling of a borehole |
US5025866A (en) * | 1990-06-04 | 1991-06-25 | New Tek Manufacturing, Inc. | Row following drawn implement with internal steering arm |
US5155442A (en) * | 1991-03-01 | 1992-10-13 | John Mercer | Position and orientation locator/monitor |
US5226487A (en) * | 1990-02-07 | 1993-07-13 | Mbs Advanced Engineering Systems | Pneumopercussive machine |
US5505270A (en) * | 1994-10-19 | 1996-04-09 | Earth Tool L.L.C. | Reversible pneumatic ground piercing tool |
US5633589A (en) * | 1991-03-01 | 1997-05-27 | Mercer; John E. | Device and method for locating an inground object and a housing forming part of said device |
US5975714A (en) * | 1997-06-03 | 1999-11-02 | Applied Innovative Technologies, Incorporated | Renewable energy flashlight |
US6470979B1 (en) * | 1999-07-16 | 2002-10-29 | Earth Tool Company, L.L.C. | Sonde housing structure |
US6953095B2 (en) * | 2004-01-09 | 2005-10-11 | Earth Tool Company, L.L.C. | Method and system for operating a reversible pneumatic ground piercing tool |
US20080074083A1 (en) * | 2006-06-26 | 2008-03-27 | Yarger Eric J | System and method for storing energy |
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US5025868A (en) * | 1989-11-13 | 1991-06-25 | Earth Tool Corporation | Pneumatic ground piercing tool |
US6536519B1 (en) * | 2000-10-13 | 2003-03-25 | Schlumberger Technology Corp. | Downhole tool to generate tension pulses on a slickline |
-
2008
- 2008-04-08 US US12/080,972 patent/US20090250265A1/en not_active Abandoned
-
2010
- 2010-06-25 US US12/823,635 patent/US20100263930A1/en not_active Abandoned
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US3448305A (en) * | 1966-10-11 | 1969-06-03 | Aquitaine Petrole | Apparatus for producing and utilising electrical energy for use in drilling operations |
US4491738A (en) * | 1981-11-24 | 1985-01-01 | Shell Internationale Research Maatschappij, B.V. | Means for generating electricity during drilling of a borehole |
US5226487A (en) * | 1990-02-07 | 1993-07-13 | Mbs Advanced Engineering Systems | Pneumopercussive machine |
US5025866A (en) * | 1990-06-04 | 1991-06-25 | New Tek Manufacturing, Inc. | Row following drawn implement with internal steering arm |
US5155442A (en) * | 1991-03-01 | 1992-10-13 | John Mercer | Position and orientation locator/monitor |
US5633589A (en) * | 1991-03-01 | 1997-05-27 | Mercer; John E. | Device and method for locating an inground object and a housing forming part of said device |
US6756784B2 (en) * | 1991-03-01 | 2004-06-29 | Merlin Technology, Inc. | Orientation sensor arrangement and method for use in a system for monitoring the orientation of an underground boring tool |
US5505270A (en) * | 1994-10-19 | 1996-04-09 | Earth Tool L.L.C. | Reversible pneumatic ground piercing tool |
US5975714A (en) * | 1997-06-03 | 1999-11-02 | Applied Innovative Technologies, Incorporated | Renewable energy flashlight |
US6470979B1 (en) * | 1999-07-16 | 2002-10-29 | Earth Tool Company, L.L.C. | Sonde housing structure |
US6953095B2 (en) * | 2004-01-09 | 2005-10-11 | Earth Tool Company, L.L.C. | Method and system for operating a reversible pneumatic ground piercing tool |
US20080074083A1 (en) * | 2006-06-26 | 2008-03-27 | Yarger Eric J | System and method for storing energy |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130049492A1 (en) * | 2008-12-10 | 2013-02-28 | Juan Andujar | System for Converting Tidal Wave Energy Into Electric Energy |
US8772986B2 (en) * | 2008-12-10 | 2014-07-08 | Juan Andujar | System for converting tidal wave energy into electric energy |
US9088187B2 (en) | 2011-10-28 | 2015-07-21 | Juan Andujar | Hybrid electro magnetic hydro kinetic high pressure propulsion generator |
US9290994B2 (en) | 2011-12-29 | 2016-03-22 | Charles T. Webb | Sonde housing and bit body arrangement for horizontal directional drilling |
WO2014051575A1 (en) * | 2012-09-26 | 2014-04-03 | Halliburton Energy Services, Inc. | Generator driven by drill pipe |
Also Published As
Publication number | Publication date |
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US20090250265A1 (en) | 2009-10-08 |
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