Patents-Review.com
ClassID:

135320 ⎘

E21B17/105 - CPC Classification

Classification description:

Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings Cables; ; Tubings; Wear protectors; Centralising devices, e.g. stabilisers; Elastomer protector or centering means split type

Recent Application in this class:
#1
20250215754
2025-07-03

LOCATOR FOR SURVEY APPARATUS

 #2
20250179882
2025-06-05

CUSTOMIZED CENTRALIZING HOUSING FOR DOWNHOLE TOOL

 #3
20250146599
2025-05-08

VORTEX-INDUCED VIBRATION STRAKE ARRANGEMENTS

 #4
20240229571
2024-07-11

SHANK ADAPTER, ROCK DRILLING MACHINE AND METHOD

 #5
20240133247
2024-04-25

SHANK ADAPTER, ROCK DRILLING MACHINE AND METHOD

 #6
20230091111
2023-03-23

Spacer segment and a spacer

 #7
20220381095
2022-12-01

Conductor assembly and methods

 #8
20200208404
2020-07-02

Adjustable rebar centralizer for use in a drilled shaft/bore hole

 #9
20190242199
2019-08-08

Casing friction reduction methods and tool

 #10
20190085656
2019-03-21

Drill string apparatus with integrated annular barrier and port collar, methods, and systems

 #11
20190017327
2019-01-17

Whipstocking drill for ultra-short-radius well

 #12
20180156000
2018-06-07

Positioning system

 #13
20180106116
2018-04-19

Rotary locking sub for angular alignment of downhole sensors with high side in directional drilling

 #14
20170314360
2017-11-02

Integrally-bonded swell packer

 #15
20170306719
2017-10-26

Drill string apparatus with integrated annular barrier and port collar, methods, and systems

 #16
20170268235
2017-09-21

Rebar centralizer for use in a drilled shaft/bore hole

 #17
20170247953
2017-08-31

Junction box to secure and electronically connect downhole tools

 #18
20170159374
2017-06-08

UNDERGROUND WATER PUMPING PIPE ASSEMBLY FOR UNDERGROUND WATER MOTOR PUMP

 #19
20170074055
2017-03-16

Centralizer

 #20
20160290110
2016-10-06

Screened communication connector for a production tubing joint

 #21
20160290068
2016-10-06

Centralizer for use with wellbore drill collar

 #22
20150226019
2015-08-13

Wireless downhole tool positioning control

 #23
20150152692
2015-06-04

Riser clamp

 #24
20140333064
2014-11-13

Riser clamp

 #25
20140326460
2014-11-06

Buoyancy compensating element and method

 #26
20140099084
2014-04-10

Downhole wellbore heating system and method

 #27
20140027107
2014-01-30

Continuous rod centralizer

 #28
20130315672
2013-11-28

Method and apparatus for protecting pipe installed underground

 #29
20130313825
2013-11-28

Coupler method and apparatus for installing pipe with a protective cover into borehole

 #30
20130292183
2013-11-07

Centralizer

 #31
20120312528
2012-12-13

Junction box to secure and electronically connect downhole tools

 #32
20120125689
2012-05-24

Drill pipe tubing and casing protector

 #33
20110154620
2011-06-30

Apparatus for and method of protecting an umbilical

 #34
20110056706
2011-03-10

LONGITUDINALLY SPLIT SWELLABLE PACKER AND METHOD

 #35
20110042095
2011-02-24

Riser clamp

 #36
20090266618
2009-10-29

Rotating drill pipe protector attachment and fastener assembly

 #37
20080289829
2008-11-27

Floatation module and method

 #38
20070256750
2007-11-08

CENTRALISER

 #39
20070158060
2007-07-12

System for sealing an annular space in a wellbore

 #40
20060062638
2006-03-23

Floatation module and method

 #41
20060000602
2006-01-05

Field-installable rod guide

 #42
13531021
2016-02-02

Insulated tubular clamp