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1974-09-13 |
1976-12-14 |
Smith International, Inc. |
Drill director
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US4021076A
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1975-05-02 |
1977-05-03 |
Consolidation Coal Company |
Wire communications channel for a pair of unitized augers
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US4040494A
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*
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1975-06-09 |
1977-08-09 |
Smith International, Inc. |
Drill director
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JPS5265148A
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1975-11-25 |
1977-05-30 |
Kogyo Gijutsuin |
Curve boring device
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1975-12-22 |
1977-08-09 |
Smith International, Inc. |
Drilling apparatus
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DE2604063A1
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1976-02-03 |
1977-08-04 |
Miguel Kling |
SELF-PROPELLING AND SELF-LOCKING DEVICE FOR DRIVING ON CANALS AND FORMED BY LONG DISTANCES
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DE2605010C2
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1976-02-10 |
1983-11-03 |
Paul 5940 Lennestadt Schmidt |
Jump start for ram drilling rigs
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1976-07-06 |
1977-11-29 |
Rockwell International Corporation |
Self-propelled deep well turbine drill
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1976-11-05 |
1980-08-18 |
Sven Halvor Johansson |
DEVICE DESIGNED FOR RECOVERY RESP MOVEMENT OF A MOUNTAIN BORING DEVICE WHICH SHOULD DRIVE VERY LONG, PREFERRED VERTICAL SHAKES IN THE BACKGROUND
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SE414806B
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1976-11-05 |
1980-08-18 |
Sven Halvor Johansson |
PROCEDURE AND DEVICE FOR BORING DEEP SHAK IN THE GROUND GROUND
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1978-03-30 |
1979-08-21 |
Continental Oil Company |
Push drill guidance indication apparatus
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1978-06-20 |
1980-01-29 |
Gerald Bullard |
Well perforating tool
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CH630700A5
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1978-07-24 |
1982-06-30 |
Inst Francais Du Petrole |
VARIABLE ANGLE ELBOW CONNECTION FOR DIRECTED DRILLING.
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1979-04-06 |
1980-10-31 |
Inst Francais Du Petrole |
Crank connector for adjustment of drilling path - comprises interconnected tubes having variable relative angular positioning
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FR2491989A2
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1980-10-13 |
1982-04-16 |
Inst Francais Du Petrole |
VARIABLE ANGLE ELBOW CONNECTION FOR DIRECTED DRILLING
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FR2453268A2
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1978-07-24 |
1980-10-31 |
Inst Francais Du Petrole |
Crank connector for adjustment of drilling path - comprises interconnected tubes having variable relative angular positioning
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FR2432079A1
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1978-07-24 |
1980-02-22 |
Inst Francais Du Petrole |
Crank connector for adjustment of drilling path - comprises interconnected tubes having variable relative angular positioning
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1978-07-24 |
1983-02-22 |
Institut Francais Du Petrole |
Crank connector for directional drilling
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GB2039093B
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1978-12-26 |
1982-11-24 |
Conoco Inc |
Drill machine guidance using natural occuring radiation
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FR2445431A1
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1978-12-29 |
1980-07-25 |
Inst Francais Du Petrole |
Boring column extension with stabiliser stages - having remotely-controlled projectable blades for guiding cutter in preselected direction
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1979-02-21 |
1984-04-19 |
Conoco Inc. |
Directional drilling
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DE3000239C2
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1980-01-05 |
1983-10-20 |
Bergwerksverband Gmbh, 4300 Essen |
Facility for producing targeted holes
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1980-01-05 |
1985-09-30 |
Bergwerksverband Gmbh |
DEVICE FOR ASTAD COMMUNICATION OF ANY DIRECTED DRILLS
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1980-02-04 |
1981-12-15 |
Conoco Inc. |
Thrust actuated drill guidance device
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1980-08-25 |
1982-12-28 |
Varco International, Inc. |
Method and apparatus for drilling laterally from a well bore
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1981-05-22 |
1983-04-12 |
Gene Thibodeaux |
Method and apparatus for preventing wireline kinking in a directional drilling system
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1982-04-23 |
1984-09-18 |
Conoco Inc. |
Method and apparatus for rotary drill guidance
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1982-11-26 |
1984-08-07 |
Advanced Drilling Corporation |
Down-hole drilling apparatus
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1984-08-03 |
1986-08-12 |
Hydril Company |
Method for forming boreholes
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1984-08-03 |
1985-12-17 |
Hydril Company |
Method and apparatus for forming boreholes
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1984-08-03 |
1985-11-26 |
Hydril Company |
Apparatus for forming boreholes
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1985-04-05 |
1993-03-15 |
Gas Res Inst |
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1985-04-16 |
1986-11-11 |
Gas Research Institute |
Percussion boring tool
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1986-07-01 |
1986-08-06 |
Framo Dev Ltd |
Drilling system
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1988-12-30 |
1996-05-24 |
Inst Francais Du Petrole |
EQUIPMENT FOR DRILLING PACKAGE COMPRISING AN ELEMENT TO BE ACTUATED, A MOTOR AND CONTROL MEANS
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1988-12-30 |
1995-09-08 |
Inst Francais Du Petrole |
LINING FOR BOREHOLE WITH CONTROLLED TRAJECTORY COMPRISING A BENDED ELEMENT WITH VARIABLE ANGLE AND USE OF THIS LINING
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1988-12-30 |
1996-05-24 |
Inst Francais Du Petrole |
DRILLING LINING WITH CONTROLLED PATHWAY COMPRISING A VARIABLE GEOMETRIC STABILIZER AND USE OF SAID LINING
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1989-04-28 |
1992-04-07 |
Smet Marc Jozef Maria |
Steerable BOORMOL.
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1989-11-30 |
1991-06-13 |
Eastman Christensen Co |
DIRECTIONAL DRILLING TOOL
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1990-01-15 |
1992-02-25 |
Smet Marc Jozef Maria |
STEERABLE BOTTOM DRILLS.
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1990-06-01 |
1991-12-05 |
Eastman Christensen Co |
DRILLING TOOL FOR DRILLING HOLES IN SUBSTRATE ROCK INFORMATION
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1992-10-23 |
1994-06-07 |
Halliburton Company |
Method and apparatus for adjusting the position of stabilizer blades
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1992-10-23 |
1994-07-26 |
Halliburton Company |
Method and apparatus for automatic closed loop drilling system
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1992-10-23 |
1994-06-07 |
Halliburton Company |
Adjustable stabilizer
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1994-09-20 |
1995-11-23 |
Terra Ag Tiefbautechnik |
Hydraulic ram=type drill
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1994-10-14 |
2005-03-22 |
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Closed-loop conveyance systems for well servicing
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1995-03-04 |
1996-09-26 |
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Steering device for drill heads
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1995-04-24 |
1996-09-17 |
Klatt; Darrell |
Method and tool for use in commmencing the drilling of a deviated well
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1995-10-26 |
1996-01-03 |
Camco Drilling Group Ltd |
A drilling assembly for drilling holes in subsurface formations
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1996-01-02 |
1997-09-23 |
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Drill string orienting tool
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1997-09-05 |
2001-01-30 |
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Conveying a tool along a non-vertical well
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1997-09-05 |
1999-09-21 |
Schlumberger Technology Corporation |
Method and apparatus for conveying a logging tool through an earth formation
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1997-10-27 |
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Halliburton Energy Services, Inc. |
Well system
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1997-10-27 |
2003-08-19 |
Halliburton Energy Services, Inc. |
Three dimensional steerable system and method for steering bit to drill borehole
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1997-10-27 |
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Well system
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1998-01-09 |
2000-05-09 |
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Apparatus for controlling relative rotation of a drilling tool in a well bore
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1999-11-10 |
2006-11-14 |
Schlumberger Technology Corporation |
Control method for use with a steerable drilling system
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1999-11-10 |
2001-05-17 |
Schlumberger Holdings Limited |
Control method for use with a steerable drilling system
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1999-12-20 |
2003-12-09 |
Halliburton Energy Services, Inc. |
Actuator assembly and method for actuating downhole assembly
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1999-12-27 |
2001-07-09 |
Ball Corporation |
Autonomous omnidirectional driller
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2000-11-24 |
2001-01-10 |
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Traction apparatus
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2001-12-19 |
2007-03-13 |
Schlumberge Technology Corporation |
Hybrid rotary steerable system
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2002-03-15 |
2002-05-01 |
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Tractors for movement along a pipepline within a fluid flow
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2002-05-13 |
2003-11-20 |
Camco International (Uk) Limited |
Recalibration of downhole sensors
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2003-04-30 |
2006-11-01 |
Weatherford Lamb |
A traction apparatus
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2004-01-27 |
2007-05-10 |
Schlumberger Technology B.V. |
Underground drilling of a lateral bore
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2007-11-15 |
2009-05-20 |
Schlumberger Holdings |
Cutting removal with a wireline lateral drilling tool
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2008-06-05 |
2013-09-23 |
Norwegian Hard Rock Drilling As |
Device by rock drill.
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2012-04-23 |
2014-03-17 |
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Device for drilling and method using the same
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2012-11-27 |
2013-03-27 |
恒天九五重工有限公司 |
Drilling bit of horizontal directional drilling machine
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2015-05-20 |
北京市普利门电子科技有限公司 |
Single-shaft stabilized platform device for rotary steering drilling tool and stabilizing method thereof
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2014-02-26 |
刘贞永 |
Traveling-type down-the-hole drill
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2014-07-22 |
2016-01-20 |
中国地质大学(武汉) |
A kind of swinging type rotary steerable drilling drilling tool
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2015-02-05 |
2015-05-27 |
广东顺德孔山重工机械有限公司 |
Wide-angle pitching and swinging down-the-hole drill
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