Patents-Review.com
ClassID:

135463 ⎘

E21B33/037 - CPC Classification

Classification description:

Sealing or packing boreholes or wells; Surface sealing or packing; Well heads; Setting-up thereof specially adapted for underwater installations Protective housings therefor

Sub-classes:
Recent Application in this class:
#1
20260125962
2026-05-07

TENSIONED WELLHEAD SYSTEMS AND RELATED METHODS

 #2
20250369303
2025-12-04

ACTUATOR, RECEPTACLE, AND ACTUATOR ASSEMBLY THEREFOR

 #3
20250297534
2025-09-25

SYSTEM AND METHOD FOR COMPOSITE MUDMAT AND MOUNTING BASE

 #4
20240352820
2024-10-24

WELL STRUCTURE ADAPTATIONS AND CONNECTIONS FOR REUSABLE OIL AND GAS STRUCTURES

 #5
20240191593
2024-06-13

Well tool comprising an orientation system and method for using same

 #6
20230184047
2023-06-15

Noise mitigation of subsea oil and gas equipment using subsea acoustic insulation

 #7
20220213752
2022-07-07

Convertible bell nipple for wellbore operations

 #8
20210404845
2021-12-30

Subsea housing assembly

 #9
20210317708
2021-10-14

Well pad construction system and methods

 #10
20210230975
2021-07-29

Systems and methods for thermal management of subsea conduits using a jumper having adjustable insulating elements

 #11
20210164312
2021-06-03

Method of making safe an undersea bottom-to-surface production pipe when production is stopped

 #12
20210156214
2021-05-27

Protective cap assembly for subsea equipment

 #13
20210047875
2021-02-18

Improving access into subsea structures

 #14
20210002971
2021-01-07

Subsea assembly

 #15
20200378207
2020-12-03

Sealing profile protector

 #16
20200284142
2020-09-10

Leak detection systems and methods for components of a mineral extraction system

 #17
20200011147
2020-01-09

Wellhead profile with increased fatigue resistance

 #18
20190390528
2019-12-26

Containment systems for sealing a pass-through in a well, and methods therefore

 #19
20190376358
2019-12-12

Cap for a hydrocarbon production well and method of use

 #20
20190234168
2019-08-01

Weatherization system for a wellhead emission reduction system

 #21
20190218877
2019-07-18

Transducer assembly for offshore drilling riser

 #22
20190186662
2019-06-20

Annular sleeves for fluid-handling components

 #23
20190145229
2019-05-16

Method for installing a hatch to a subsea structure, hinge and assembly for subsea use

 #24
20190048678
2019-02-14

Sealing arrangement

 #25
20180347303
2018-12-06

Side door hanger system for sealing a pass-through in a wellhead, and method therefore

 #26
20180335323
2018-11-22

Pressure compensated sensors

 #27
20180298712
2018-10-18

Method of making safe an undersea bottom-to-surface production pipe when production is stopped

 #28
20180274301
2018-09-27

Method for excavating mud line cellar for subsea well drilling

 #29
20180195360
2018-07-12

High pressure isolation system for well stimulation through production tubing

 #30
20180038190
2018-02-08

METHOD AND APPARATUS TO EFFECT INJECTION OF FLUIDS INTO A SUBSEA HORIZONTAL TREE

 #31
20180017416
2018-01-18

Subsea housing assembly

 #32
20180003008
2018-01-04

Subsea wellhead assembly

 #33
20170362909
2017-12-21

High-integrity pressure protection system Christmas tree

 #34
20170328162
2017-11-16

Subsea equipment-protection apparatus

 #35
20170328161
2017-11-16

Method of lowering an apparatus

 #36
20170298706
2017-10-19

Method and apparatus for capping a subsea wellhead

 #37
20170247987
2017-08-31

Apparatus and method for isolating and securing an underwater oil wellhead and blowout preventer

 #38
20170183934
2017-06-29

Well head stabilizing device and method

 #39
20160349357
2016-12-01

Oil well improvement system—intrusion detection and respose subsystem

 #40
20160348458
2016-12-01

Oil Well Improvement System - Pressure Relief, Diversion Capture & Recovery

 #41
20160348457
2016-12-01

Oil Well Improvement System - Seabed Structural Assembly

 #42
20160312562
2016-10-27

EXTENDED COOL-DOWN TIME SUBSEA CHOKE

 #43
20160290097
2016-10-06

Subsea protection system

 #44
20160186517
2016-06-30

Subsea support

 #45
20160186502
2016-06-30

Control line protection system

 #46
20160153261
2016-06-02

Sanitary check valve to prevent well contamination

 #47
20160002997
2016-01-07

Electrical submersible pump tree cap

 #48
20150337642
2015-11-26

Oil well improvement system—well monitor and control subsystem

 #49
20150299974
2015-10-22

Suction caisson with weakened section and method for installing the same

 #50
20140318801
2014-10-30

Apparatus and method for isolating and securing an underwater oil wellhead and blowout preventer

 #51
20140174716
2014-06-26

Petroleum well intervention winch system

 #52
20140144612
2014-05-29

BOP heating methods and systems and heat exchange units

 #53
20140078697
2014-03-20

Arrangement system

 #54
20140060849
2014-03-06

Cap system for subsea equipment

 #55
20140060847
2014-03-06

Device for Operations in Proximity of an Underwater Installation

 #56
20140027125
2014-01-30

Retrievable flow module unit

 #57
20140020901
2014-01-23

High pressure isolation system for well stimulation through production tubing

 #58
20130334448
2013-12-19

Device for a valve

 #59
20130327535
2013-12-12

Subsea overpressure relief device

 #60
20130220628
2013-08-29

High-pressure cap equalization valve

 #61
20130206420
2013-08-15

Retrievable flow module unit

 #62
20130175054
2013-07-11

Sealing mechanism for subsea capping system

 #63
20130014914
2013-01-17

BOP heating methods and systems and heat exchange units

 #64
20120285699
2012-11-15

Subsea cap

 #65
20120241160
2012-09-27

Oil well improvement system

 #66
20120241009
2012-09-27

Pressure compensating device

 #67
20120175126
2012-07-12

Subsea safety system having a protective frangible liner and method of operating same

 #68
20120160509
2012-06-28

Apparatus and method for isolating and securing an underwater oil wellhead and blowout preventer

 #69
20120092174
2012-04-19

Well fluid leak detection and response apparatus and method

 #70
20120037378
2012-02-16

TREE PROTECTION SYSTEM

 #71
20120018165
2012-01-26

Marine well containment system and method

 #72
20110303417
2011-12-15

Subsea well template

 #73
20110266002
2011-11-03

Subsea Control Module with Removable Section

 #74
20110265885
2011-11-03

Subsea control module with removable section and method

 #75
20110108275
2011-05-12

Wellhead isolation protection sleeve

 #76
20110019385
2011-01-27

Arrangement system

 #77
20100243069
2010-09-30

Subsea valve

 #78
20100059217
2010-03-11

Method and apparatus for mitigating environmental impact due to fluid leaks

 #79
20090178810
2009-07-16

Hydraulic overshot with removable setting and testing core

 #80
20080210435
2008-09-04

Subsea trees and caps for them

 #81
20080190621
2008-08-14

Locking cap for subsea tree

 #82
20060272829
2006-12-07

Well cap method and apparatus

 #83
20060081376
2006-04-20

Hydraulic friction fluid heater and method of using same

 #84
20050186033
2005-08-25

Apparatus and method

 #85
20050061512
2005-03-24

Hydraulic friction fluid heater and method of using same

 #86
19018314
2026-01-27

Fishing protection structure

 #87
17967998
2024-12-03

Method and apparatus for protection of control lines and other equipment

 #88
15648160
2018-05-29

Tubular handling assembly and method