Patents-Review.com
ClassID:

135190 ⎘

E21B7/201 - CPC Classification

Classification description:

Special methods or apparatus for drilling; Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes with helical conveying means

Sub-classes:
Recent Application in this class:
#1
20220282576
2022-09-08

Apparatus and method for removing soil from a conduit

 #2
20220136330
2022-05-05

Cutting head and method for horizontal directional tunneling

 #3
20210033216
2021-02-04

Systems and methods for underground pipe installation and soil clearing

 #4
20200158262
2020-05-21

Systems and methods for underground pipe installation and soil clearing

 #5
20200032598
2020-01-30

Directional drilling systems, apparatuses, and methods

 #6
20190292855
2019-09-26

Downhole force generating tool

 #7
20190249800
2019-08-15

Systems and methods for underground pipe installation and soil clearing

 #8
20180371841
2018-12-27

Cutting assembly for a boring device

 #9
20180251948
2018-09-06

Modular assembly for handling excavating equipment for excavating machines, excavating machine, method for converting the excavating configuration of an excavating machine

 #10
20180163475
2018-06-14

Material exhaust connection for horizontal bore

 #11
20180100354
2018-04-12

Method of using a downhole force generating tool

 #12
20180038166
2018-02-08

Downhole force generating tool

 #13
20170350190
2017-12-07

Steering head

 #14
20170016278
2017-01-19

Downhole production casing string

 #15
20160281432
2016-09-29

Direct torque helical displacement well and hydrostatic liquid pressure relief device

 #16
20160168916
2016-06-16

Apparatus for drilling deeper and wider well bore with casing

 #17
20150354303
2015-12-10

Method of using a downhole force generating tool

 #18
20150354282
2015-12-10

Downhole force generating tool

 #19
20150354281
2015-12-10

Downhole force generating tool

 #20
20150337602
2015-11-26

Method of using a downhole force generating tool

 #21
20150144359
2015-05-28

Method of using a downhole force generating tool

 #22
20150144329
2015-05-28

Downhole force generating tool

 #23
20140374165
2014-12-25

Steering head

 #24
20140196955
2014-07-17

Direct torque helical displacement well and hydrostatic liquid pressure relief device

 #25
20140054088
2014-02-27

Steering head

 #26
20130062123
2013-03-14

Steering head

 #27
20120163921
2012-06-28

Ground drilling method and apparatus

 #28
20120012395
2012-01-19

Steering head

 #29
20110209921
2011-09-01

Collapsible rock head and associated structure

 #30
20110203853
2011-08-25

Auger boring machine having spoils ejector

 #31
20100276203
2010-11-04

Steering head

 #32
20100232887
2010-09-16

BREAKAWAY CASING CONNECTION

 #33
20100065331
2010-03-18

Auger boring machine

 #34
20090288883
2009-11-26

SWIVEL FOR USE IN INSTALLING LARGE DIAMETER CASING

 #35
20080236892
2008-10-02

Method of multistage manufacturing a ground bore

 #36
20080217070
2008-09-11

Method and apparatus for providing a continuous stroke auger boring machine

 #37
20080217069
2008-09-11

Auger boring machine with included pilot tube steering mechanism and method of use

 #38
20080217068
2008-09-11

Swivel for use in installing large diameter casing

 #39
20080217066
2008-09-11

Lubricated pilot tubes for use with auger boring machine pilot steering system and use thereof

 #40
20080217061
2008-09-11

Pilot tube system and attachment mechanism for auger boring machine

 #41
20080217060
2008-09-11

Auger boring machine with two-stage guidance control system

 #42
20080073123
2008-03-27

Dual-member auger boring system

 #43
20080017418
2008-01-24

Boring system and method therefor

 #44
20070251730
2007-11-01

Collapsible rock head

 #45
20060175093
2006-08-10

Method and device for boring holes in soil or rock

 #46
20060054360
2006-03-16

Apparatus for guiding and steering an earth boring machine and casing assembly