Patents-Review.com
ClassID:

135332 ⎘

E21B17/203 - CPC Classification

Classification description:

Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings Cables; ; Tubings; Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables with plural fluid passages

Recent Application in this class:
#1
20250067131
2025-02-27

COILED TUBING TOOL FLOW TUBE ARCHITECTURE

 #2
20230175342
2023-06-08

Introduction and mixing of separate liquid compositions containing reactive components within a well

 #3
20220280991
2022-09-08

A Method of Making a Fluid Conduit

 #4
20220010632
2022-01-13

Sealed concentric coiled tubing

 #5
20210355761
2021-11-18

Well intervention apparatus and method

 #6
20210198956
2021-07-01

Multichannel composite coiled tubing

 #7
20210017820
2021-01-21

LONG FLEXIBLE TUBING ELEMENT (VARIANTS)

 #8
20200392802
2020-12-17

Multi-component downhole treatment

 #9
20200332928
2020-10-22

LONG FLEXIBLE TUBING ELEMENT (VARIANTS)

 #10
20200131861
2020-04-30

Completing slim-hole horizontal wellbores

 #11
20200072001
2020-03-05

Apparatus and method for running casing into a wellbore

 #12
20190257194
2019-08-22

Dual telemetric coiled tubing system

 #13
20190242241
2019-08-08

Steerable Acid Tunneling System

 #14
20170321497
2017-11-09

Multi-conduit coiled tubing assembly including pivotal clamping members

 #15
20170254178
2017-09-07

Dual coiled tubing head

 #16
20170218738
2017-08-03

Dual-walled coiled tubing with downhole flow actuated pump

 #17
20160312592
2016-10-27

SW-SAGD WITH BETWEEN HEEL AND TOE INJECTION

 #18
20160237749
2016-08-18

Adjustable bend assembly for a downhole motor

 #19
20150330193
2015-11-19

Entwined pipes

 #20
20150028168
2015-01-29

Multi-Conduit Coiled Tubing Assembly

 #21
20150027727
2015-01-29

Tubular string displacement assistance

 #22
20150000929
2015-01-01

Method for producing hydrocarbon gas from a wellbore and valve assembly

 #23
20140345742
2014-11-27

Coiled tubing with heat resistant conduit

 #24
20140305652
2014-10-16

Method and apparatus for removing liquid from a horizontal well

 #25
20140251695
2014-09-11

Adjustable bend assembly for a downhole motor

 #26
20140246212
2014-09-04

TUBULAR APPARATUS FOR THE CONTINUOUS COMPLETION OF HYDROCARBON WELLS, AND CORRESPONDING LAYING METHOD

 #27
20140102720
2014-04-17

Permeability Modification

 #28
20130299180
2013-11-14

Systems and methods for managing pressures in casing annuli of subterranean wells

 #29
20130277047
2013-10-24

Downhole Delivery Of Chemicals With A Micro-Tubing System

 #30
20130118746
2013-05-16

Composite Cable Systems For Use In An In Situ Oil Production Process

 #31
20130098629
2013-04-25

Method and apparatus for removing liquid from a horizontal well

 #32
20130025875
2013-01-31

Pipe-in-pipe apparatus, and methods and systems

 #33
20120155813
2012-06-21

Composite spoolable tube

 #34
20120080115
2012-04-05

Cabling system corrugated centertube umbilical

 #35
20120067643
2012-03-22

TWO-PHASE ISOLATION METHODS AND SYSTEMS FOR CONTROLLED DRILLING

 #36
20120006444
2012-01-12

Coiled umbilical tubing

 #37
20110127029
2011-06-02

Dual pathway riser and its use for production of petroleum products in multi-phase fluid pipelines

 #38
20110120586
2011-05-26

Downhole recovery production tube system

 #39
20110067859
2011-03-24

Method and apparatus for determining locations of multiple casings within a wellbore conductor

 #40
20100314174
2010-12-16

FLOW DIVERTER FOR DRILLING

 #41
20100276143
2010-11-04

Method and device for cleaning and sealing a well

 #42
20100230112
2010-09-16

Multi-channel, combination coiled tubing strings for hydraulically driven downhole pump

 #43
20100212769
2010-08-26

Composite spoolable tube

 #44
20100186969
2010-07-29

Downhole apparatus

 #45
20100175895
2010-07-15

Permeability modification

 #46
20080066961
2008-03-20

Coiled tubing wellbore drilling and surveying using a through the drill bit apparatus

 #47
20080066905
2008-03-20

Coiled tubing wellbore drilling and surveying using a through the drill bit apparatus

 #48
20070187111
2007-08-16

Apparatus and method for dewatering low pressure gradient gas wells

 #49
20070151735
2007-07-05

Concentric coiled tubing annular fracturing string

 #50
20070084603
2007-04-19

Well cementing apparatus and method

 #51
20070039736
2007-02-22

Communicating fluids with a heated-fluid generation system

 #52
20060219407
2006-10-05

METHOD AND APPARATUS FOR CEMENTING A WELL USING CONCENTRIC TUBING OR DRILL PIPE

 #53
20060213247
2006-09-28

Method of manufacturing a coiled tubing system

 #54
20060137880
2006-06-29

Subsea umbilical

 #55
20050284664
2005-12-29

Dual wall drill string assembly

 #56
20050274527
2005-12-15

Apparatus and method for dewatering low pressure gradient gas wells

 #57
20050178551
2005-08-18

Method and apparatus for stimulation of multiple formation intervals

 #58
20050121094
2005-06-09

Composite spoolable tube

 #59
20050103527
2005-05-19

Dual wall drill string assembly

 #60
19201397
2026-05-05

Methods for preventing corrosion in flexible pipe with passivating agents