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Class Information
Number: 175/61
Name: Boring or penetrating the earth > Processes > Boring curved or redirected bores
Description: Processes comprising drilling or forming a borehole in which the axis of the borehole is (1) curved or arcuate, (2) two straight line portions intersecting at an angle or (3) a straight line portion and a curved portion.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7610970 |
Apparatus for eliminating net drill bit torque and controlling drill bit walk |
Nov. 3, 2009 |
| 7610971 |
One trip milling system and method |
Nov. 3, 2009 |
| 7600586 |
System for steering a drill string |
Oct. 13, 2009 |
| 7599797 |
Method of mitigating risk of well collision in a field |
Oct. 6, 2009 |
| 7588100 |
Method and apparatus for directional drilling with variable drill string rotation |
Sep. 15, 2009 |
| 7584788 |
Control method for downhole steering tool |
Sep. 8, 2009 |
| 7584807 |
Multiple pulsejet boring device |
Sep. 8, 2009 |
| 7571777 |
Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell |
Aug. 11, 2009 |
| 7559379 |
Downhole steering |
Jul. 14, 2009 |
| 7556105 |
Closed loop drilling assembly with electronics outside a non-rotating sleeve |
Jul. 7, 2009 |
| 7552761 |
Method and system for wellbore communication |
Jun. 30, 2009 |
| 7543658 |
Directional drilling control |
Jun. 9, 2009 |
| 7528946 |
System for detecting deflection of a boring tool |
May. 5, 2009 |
| 7513318 |
Steerable underreamer/stabilizer assembly and method |
Apr. 7, 2009 |
| 7510027 |
Borehole drilling control system, method and apparatus |
Mar. 31, 2009 |
| 7510031 |
Directional drilling control |
Mar. 31, 2009 |
| 7510030 |
Elongated cross coil assembly for use in borehole location determination |
Mar. 31, 2009 |
| 7510029 |
System for tracking and maintaining an on-grade horizontal borehole |
Mar. 31, 2009 |
| 7506701 |
Drill bit assembly for directional drilling |
Mar. 24, 2009 |
| 7506700 |
Method for steering mud motors and retrieving measurement while drilling devices |
Mar. 24, 2009 |
| 7506699 |
Directional drilling tool |
Mar. 24, 2009 |
| 7506696 |
Borehole drilling control system, method and apparatus |
Mar. 24, 2009 |
| 7503403 |
Method and apparatus for enhancing directional accuracy and control using bottomhole assembly bending measurements |
Mar. 17, 2009 |
| 7503405 |
Rotary valve for steering a drill string |
Mar. 17, 2009 |
| 7487846 |
Electrically operated drilling method |
Feb. 10, 2009 |
| 7487847 |
Lateral downhole drilling tool |
Feb. 10, 2009 |
| 7484573 |
Slip grip drilling tool |
Feb. 3, 2009 |
| 7481281 |
Systems and methods for the drilling and completion of boreholes using a continuously variable transmission to control one or more system components |
Jan. 27, 2009 |
| 7481282 |
Flow operated orienter |
Jan. 27, 2009 |
| 7475741 |
Method and system for precise drilling guidance of twin wells |
Jan. 13, 2009 |
| 7475742 |
Method for drilling with casing |
Jan. 13, 2009 |
| 7467672 |
Orientation tool |
Dec. 23, 2008 |
| 7464770 |
Closed-loop control of hydraulic pressure in a downhole steering tool |
Dec. 16, 2008 |
| 7455127 |
Apparatus and method for improving multilateral well formation and reentry |
Nov. 25, 2008 |
| 7451814 |
System and method for producing fluids from a subterranean formation |
Nov. 18, 2008 |
| 7448446 |
Thru tubing tool and method |
Nov. 11, 2008 |
| 7426967 |
Rotary steerable tool including drill string rotation measurement apparatus |
Sep. 23, 2008 |
| 7413032 |
Self-controlled directional drilling systems and methods |
Aug. 19, 2008 |
| 7404454 |
Bit face orientation control in drilling operations |
Jul. 29, 2008 |
| 7401665 |
Apparatus and method for drilling a branch borehole from an oil well |
Jul. 22, 2008 |
| 7389830 |
Rotary steerable motor system for underground drilling |
Jun. 24, 2008 |
| 7383897 |
Downhole steering tool having a non-rotating bendable section |
Jun. 10, 2008 |
| 7380616 |
Automatic downlink system |
Jun. 3, 2008 |
| 7373993 |
System and method for locating and tracking a boring tool |
May. 20, 2008 |
| 7373995 |
Method and apparatus for drilling curved boreholes |
May. 20, 2008 |
| 7370702 |
Single mill casing window cutting tool and method |
May. 13, 2008 |
| 7360609 |
Directional drilling apparatus |
Apr. 22, 2008 |
| 7360610 |
Drill bit assembly for directional drilling |
Apr. 22, 2008 |
| 7353877 |
Accessing subterranean resources by formation collapse |
Apr. 8, 2008 |
| 7350594 |
System and method for tracking and communicating with a boring tool |
Apr. 1, 2008 |
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