Patents-Review.com
ClassID:

135171 ⎘

E21B7/065 - CPC Classification

Classification description:

Special methods or apparatus for drilling; Directional drilling; Deflecting the direction of boreholes using oriented fluid jets

Recent Application in this class:
#1
20230349237
2023-11-02

METHOD AND APPARATUS FOR ASSISTING IN EXTRACTION OF FLUID FROM COAL-SEAMS

 #2
20230243215
2023-08-03

SYSTEMS AND METHODS FOR SIDETRACKING OPERATIONS

 #3
20220235612
2022-07-28

Spallation drill head and associated methods

 #4
20220106859
2022-04-07

Downhole wellbore treatment system and method

 #5
20220034165
2022-02-03

Tunable wellbore pulsation valve and methods of use to eliminate or substantially reduce wellbore wall friction for increasing drilling rate-of-progress (ROP)

 #6
20210317706
2021-10-14

Mule shoe with internal flow control

 #7
20210262290
2021-08-26

Wear resistant downhole piston

 #8
20210198977
2021-07-01

Actuation valve system with pilot and main valves

 #9
20210189225
2021-06-24

Fluids for applications in downhole tools

 #10
20210079729
2021-03-18

Steering assembly control valve

 #11
20210062585
2021-03-04

Rotary steerable tool with independent actuators

 #12
20200392839
2020-12-17

Rotary steerable drilling system, a drill string sub therefor and a method of operating such system

 #13
20200173236
2020-06-04

Drilling system

 #14
20200063526
2020-02-27

Pilot controlled actuation valve system

 #15
20190162025
2019-05-30

METHOD OF ENHANCED OIL RECOVERY AND INTENSIFICATION OF PRODUCTION FROM OIL, GAS AND CONDENSATE WELLS BY MEANS OF HYDROMONITOR RADIAL OVERBALANCE FORMATION PENETRATION

 #16
20190040686
2019-02-07

Drill with remotely controlled operating modes and system and method for providing the same

 #17
20190032406
2019-01-31

Steerable borehole excavation apparatus

 #18
20180142520
2018-05-24

Directional drilling steering actuators

 #19
20170342777
2017-11-30

Drill bit for pulling material through pilot-channel

 #20
20160348439
2016-12-01

Drill with remotely controlled operating modes and system and method for providing the same

 #21
20160333640
2016-11-17

Real time steerable acid tunneling system

 #22
20160153239
2016-06-02

Method of forming lateral boreholes from a parent wellbore

 #23
20160084011
2016-03-24

Insert and method for directional drilling

 #24
20160076305
2016-03-17

Method and system for directional drilling

 #25
20160061019
2016-03-03

Method and system for directional drilling

 #26
20150240564
2015-08-27

Drill with remotely controlled operating modes and system and method for providing the same

 #27
20150122548
2015-05-07

Method and system for directional drilling and coupling sub

 #28
20140367173
2014-12-18

Drill bit assembly for a directional percussion boring system

 #29
20140246240
2014-09-04

Downhole drilling tool

 #30
20140054087
2014-02-27

Drill with remotely controlled operating modes and system and method for providing the same

 #31
20140008129
2014-01-09

MULTIDIRECTIONAL WELLBORE PENETRATION SYSTEM AND METHODS OF USE

 #32
20130292181
2013-11-07

DIRECTIONAL DRILLING

 #33
20120168228
2012-07-05

Apparatus and methods for drilling a wellbore using casing

 #34
20110162890
2011-07-07

Method and apparatus for hydraulic steering of downhole rotary drilling systems

 #35
20110048811
2011-03-03

Drill bit with a retained jack element

 #36
20110011646
2011-01-20

Apparatus and methods for drilling a wellbore using casing

 #37
20100101864
2010-04-29

ANTI-WHIRL DRILL BITS, WELLSITE SYSTEMS, AND METHODS OF USING THE SAME

 #38
20100012320
2010-01-21

METHODS AND APPARATUS FOR CEMENTING DRILL STRINGS IN PLACE FOR ONE PASS DRILLING AND COMPLETION OF OIL AND GAS WELLS

 #39
20090223715
2009-09-10

CONDUCTOR PIPE STRING DEFLECTOR AND METHOD

 #40
20090158897
2009-06-25

Method for manufacturing a drill bit

 #41
20090133931
2009-05-28

METHOD AND APPARATUS FOR HYDRAULIC STEERING OF DOWNHOLE ROTARY DRILLING SYSTEMS

 #42
20090114449
2009-05-07

Acid tunneling bottom hole assembly and method utilizing reversible knuckle joints

 #43
20080271925
2008-11-06

Acid tunneling bottom hole assembly

 #44
20080110673
2008-05-15

Apparatus and methods for drilling a wellbore using casing

 #45
20080093124
2008-04-24

Apparatus and methods for drilling a wellbore using casing

 #46
20080011522
2008-01-17

Drill bit with a retained jack element

 #47
20080011521
2008-01-17

Retaining element for a jack element

 #48
20070272443
2007-11-29

Downhole steering

 #49
20070229304
2007-10-04

Drill bit with an electrically isolated transmitter

 #50
20070221415
2007-09-27

Jack element with a stop-off

 #51
20070221409
2007-09-27

Rotary valve for steering a drill string

 #52
20070181345
2007-08-09

Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells

 #53
20070119626
2007-05-31

Apparatus and methods for drilling a wellbore using casing

 #54
20070056774
2007-03-15

APPARATUS AND METHODS FOR DRILLING A WELLBORE USING CASING

 #55
20060243485
2006-11-02

Conductor pipe string deflector and method

 #56
20060201711
2006-09-14

Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells

 #57
20060185906
2006-08-24

Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells

 #58
20060185899
2006-08-24

Underground drilling device employing down-hole radar

 #59
20060000644
2006-01-05

Drill head steering

 #60
18883598
2025-10-28

Valve system for selective control of drilling fluid flow

 #61
18113799
2023-12-05

System and method of controlling single or dual pump operation

 #62
17126405
2021-12-21

Method and apparatus for fluid jetting of wellbores and other surfaces