ClassID:

135575

E21B41/04 - CPC Classification

Classification description:

Equipment or details not covered by groups  -  Manipulators for underwater operations, e.g. temporarily connected to well heads

Recent Application in this class:
#1
20260043315
2026-02-12

Remote Well Stimulation Method

#2
20260043305
2026-02-12

TUBING HEAD SPOOLS WITH ORIENTATION FEATURE

#3
20250334009
2025-10-30

SYSTEMS AND METHODS FOR AUTONOMOUS WELL INTERVENTION

#4
20250269946
2025-08-28

SUBMERSIBLE REMOTE OPERATED VEHICLE VISION ASSISTANCE AND CONTROL

#5
20250052148
2025-02-13

AUTONOMOUS DOWNHOLE ROBOT TOOL STRING

#6
20250020037
2025-01-16

SYSTEM AND METHOD FOR REMOTELY CONTROLLING A RUNNING TOOL

#7
20240092465
2024-03-21

Submersible remote operated vehicle vision assistance and control

#8
20230151708
2023-05-18

Single Line Quick Connector (SQC), a System Comprising the Single Line Quick Connector and Method of Operating

#9
20230130315
2023-04-27

METHANE HYDRATE PRODUCTION EQUIPMENT AND METHOD

#10
20230079184
2023-03-16

Subsea blind stab device

#11
20220412193
2022-12-29

Device of Remotely Operated, Tethered, Subsea Tools and Method of Launching Such Tools

#12
20220389794
2022-12-08

Subsea deployable installation and workover control system skid and method of installation thereof

#13
20220307349
2022-09-29

System and method for restoration of safety integrity level (SIL) capability in a subsea installation

#14
20220235653
2022-07-28

Fluid sampling and measuring assembly and method

#15
20220049584
2022-02-17

Remote underwater robotic actuator

#16
20220010658
2022-01-13

Remote underwater robotic actuator

#17
20220010647
2022-01-13

Subsea autonomous chemical injection system

#18
20210396099
2021-12-23

Locking mechanism tool and system

#19
20210348483
2021-11-11

System and method for restoration of safety integrity level (SIL) capability in a subsea installation

#20
20210246728
2021-08-12

Dual rotary elevating geotechnical drill

#21
20210108480
2021-04-15

ROV-based subsea well intervention cap

#22
20210025256
2021-01-28

Systems and methods for identifying blockages in subsea conduits

#23
20210016453
2021-01-21

Attachment mechanisms for stabilization of subsea vehicles

#24
20200408058
2020-12-31

Blowout preventer control system and methods for controlling a blowout preventer

#25
20200399971
2020-12-24

Compact over pull-push stroking tool

#26
20200378208
2020-12-03

Controlling subsea apparatus

#27
20200355048
2020-11-12

Submersible vehicle with optical fiber

#28
20200300056
2020-09-24

Lower stack assembly of a blow-out preventer for a hydrocarbon extraction well and method thereof

#29
20200240244
2020-07-30

Subsea technology

#30
20200206951
2020-07-02

Underwater pipeline inspection crawler

#31
20200198155
2020-06-25

Underwater pipeline inspection crawler

#32
20200130113
2020-04-30

Torque tool with latch assembly

#33
20200103051
2020-04-02

Subsea pumping system for pigging and hydrostatic testing operations

#34
20200102813
2020-04-02

RAPID DEPLOYMENT SUBSEA CHEMICAL INJECTION SYSTEM

#35
20200072011
2020-03-05

Sliding subsea electronics module chassis

#36
20200003025
2020-01-02

SYSTEMS AND METHODS FOR TETHERING A SUBSEA STRUCTURE

#37
20190376563
2019-12-12

POWER SCREW MECHANISM WITH ROTATION CLUTCH

#38
20190345780
2019-11-14

Subsea Flowline Blockage Remediation Using Internal Heating Device

#39
20190344452
2019-11-14

Reusable buoyancy modules for buoyancy control of underwater vehicles

#40
20190330960
2019-10-31

ROV hot-stab with integrated sensor

#41
20190323325
2019-10-24

A FLOW BASE SYSTEM FOR SUBSEA WELLS

#42
20190322341
2019-10-24

FAIL FREE REMOTELY OPERATED VEHICLE

#43
20190301252
2019-10-03

System and method for deploying subsea and downhole equipment

#44
20190234808
2019-08-01

Methodology and system for determining temperature of subsea infrastructure

#45
20190195026
2019-06-27

Marine installation

#46
20190194898
2019-06-27

Systems and methods for tethering subsea structure mounted on a wellhead

#47
20190176944
2019-06-13

Methods for subsea vehicles supervised control

#48
20190169968
2019-06-06

Liquid retainer for a production system

#49
20190162329
2019-05-30

System and methodology for indicating position

#50
20190120007
2019-04-25

Method for pulling a crown plug

#51
20190111572
2019-04-18

Reusable buoyancy modules for buoyancy control of underwater vehicles

#52
20190085651
2019-03-21

Subsea electric actuator system

#53
20190084163
2019-03-21

Attachment mechanisms for stabilization of subsea vehicles

#54
20190055822
2019-02-21

Subsea connection system for connecting a hot stab of a flowline to a subsea structure

#55
20190040706
2019-02-07

Subsea tree override tool apparatus and method

#56
20190039251
2019-02-07

Coordinated, complementary water environment mobile robots

#57
20190032437
2019-01-31

Systems and method for retrievable subsea blowout preventer stack modules

#58
20190032436
2019-01-31

Systems for retrievable subsea blowout preventer stack modules

#59
20180320469
2018-11-08

Tubing hanger orientation system and techniques

#60
20180313175
2018-11-01

Riser methods and apparatuses

#61
20180306007
2018-10-25

SUBSEA OPEN-STANDARD CONTROL SYSTEMS AND METHODS

#62
20180305992
2018-10-25

Remote operated vehicle removable flexible joint elastomer protection tool

#63
20180298711
2018-10-18

Systems for removing blockages in subsea flowlines and equipment

#64
20180258741
2018-09-13

Subsea control pod deployment and retrieval systems and methods

#65
20180245425
2018-08-30

Moving-rotating linear covering tool

#66
20180245417
2018-08-30

Subsea control pod deployment and retrieval systems and methods

#67
20180216444
2018-08-02

Fluid delivery vessel including a fluid delivery system and a remotely operated vehicle (ROV)

#68
20180202252
2018-07-19

Blowout preventer control system and methods for controlling a blowout preventer

#69
20180187522
2018-07-05

Manifold and shared actuator

#70
20180148301
2018-05-31

Connector system

#71
20180148147
2018-05-31

An Underwater Buoy Installation System and Kit, a Method for Assembling It, Use Thereof, and a Method for Installing a Buoy

#72
20180112369
2018-04-26

Systems and methods for tethering subsea structure mounted on a wellhead

#73
20180080905
2018-03-22

Underwater pipeline inspection crawler

#74
20180080904
2018-03-22

Underwater pipeline inspection crawler

#75
20180080307
2018-03-22

Coordinated water environment mobile robots

#76
20180079475
2018-03-22

Reusable buoyancy modules for buoyancy control of underwater vehicles

#77
20180058181
2018-03-01

Method and device for setting and retrieving a crown plug

#78
20180021945
2018-01-25

Underwater manipulator arm robot

#79
20170370206
2017-12-28

Method for providing well safety control in a remedial electronic submersible pump (ESP) application

#80
20170328182
2017-11-16

Method and apparatus for bringing under control an uncontrolled flow through a flow device

#81
20170284172
2017-10-05

Compact distributed subsea distribution of hydraulic power and chemical injection

#82
20170271916
2017-09-21

Autonomous ROVs with offshore power source that can return to recharge

#83
20170198555
2017-07-13

Running a mudline closure device integral with a wellhead

#84
20170159410
2017-06-08

Shared actuation system

#85
20170067324
2017-03-09

Tool arrangement connected to a christmas tree and methods for installing and removing of a christmas tree

#86
20170022776
2017-01-26

Wellhead Shear/Blind Ram Assembly

#87
20170022774
2017-01-26

Method and apparatus for pulling a crown plug

#88
20170002651
2017-01-05

ROV mountable subsea pump flushing and sampling system

#89
20160346910
2016-12-01

TORQUE TOOL, MOTOR ASSEMBLY, AND METHODS OF USE

#90
20160346883
2016-12-01

Torque tool, socket selection mechanism, and methods of use

#91
20160272290
2016-09-22

UNDERWATER VEHICLE FOR TRANSPORTING FLUIDS SUCH AS FOR EXAMPLE NATURAL GAS, OIL OR WATER, AND PROCESS FOR USING SAID VEHICLE

#92
20160265313
2016-09-15

Connection and disconnection of hydraulic equipment in hyperbaric environments

#93
20160258235
2016-09-08

Apparatus and method for subsea strapping band attachment

#94
20160251817
2016-09-01

Systems and methods for tethering subsea structure mounted on a wellhead

#95
20160215476
2016-07-28

APPARATUS AND METHOD FOR DEPLOYING AN OBJECT TO A SEA FLOOR

#96
20160194547
2016-07-07

Acid block and method of local acid treatment of subsea connecting element

#97
20160186534
2016-06-30

SUBSEA SYSTEM COMPRISING A CRAWLER

#98
20160177680
2016-06-23

SUBSEA DIELECTRIC FLUID INJECTION TOOL

#99
20160138355
2016-05-19

Subsea landing string with autonomous emergency shut-in and disconnect

#100
20160061878
2016-03-03

Method for locating an electrical defect in an underwater electrical distribution modular system

#101
20160061007
2016-03-03

Insertion and setting structure

#102
20160060990
2016-03-03

Seal delivery system

#103
20160059944
2016-03-03

SUBSEA SYSTEM FOR SEABED OPERATIONS

#104
20160024892
2016-01-28

Offshore well system with a subsea pressure control system movable with a remotely operated vehicle

#105
20150361769
2015-12-17

Methods for retrieval and replacement of subsea production and processing equipment

#106
20150315879
2015-11-05

Methods for retrieval and replacement of subsea production and processing equipment

#107
20150308210
2015-10-29

Well capping assembly and method of capping underwater well

#108
20150307174
2015-10-29

High power laser ROV systems and methods for treating subsea structures

#109
20150141224
2015-05-21

SUBSEA TOOL CHANGER

#110
20150136409
2015-05-21

Well intervention tool and method

#111
20150107846
2015-04-23

Method for pulling a crown plug from a subsea tree

#112
20150015410
2015-01-15

CONTROL SYSTEM OF AN ACTUATOR FOR THE ACTUATION OF SUBMARINE DEVICES

#113
20140374115
2014-12-25

Systems and methods for tethering subsea blowout preventers to enhance the strength and fatigue resistance of subsea wellheads and primary conductors

#114
20140354096
2014-12-04

Electromechanical actuator device and method of actuating a ring piston

#115
20140352972
2014-12-04

Systems and methods for pulling subsea structures

#116
20140333078
2014-11-13

Underwater shackle

#117
20140191144
2014-07-10

Separator for mechanically separating an actuator and an operator

#118
20140131048
2014-05-15

Method and device for supply of liquids for kill and scale to a subsea well

#119
20140076575
2014-03-20

System and Method for Producing Through a Multi Bore Tubing Hanger to a Subsea Manifold Without BOP Modifications

#120
20140060847
2014-03-06

Device for Operations in Proximity of an Underwater Installation

#121
20140041463
2014-02-13

Apparatus for a fluid transport pipeline, related method and system

#122
20130334448
2013-12-19

Device for a valve

#123
20130299195
2013-11-14

Method and apparatus for bringing under control an uncontrolled flow through a flow device

#124
20130220625
2013-08-29

Subsea orientation and control system

#125
20130213660
2013-08-22

ROV retrievable regulator module

#126
20130206476
2013-08-15

Remotely operable underwater drilling system and drilling method

#127
20130206420
2013-08-15

Retrievable flow module unit

#128
20130186637
2013-07-25

Subsea power source, methods, and systems

#129
20130126179
2013-05-23

Sampling skid for subsea wells

#130
20130071191
2013-03-21

Sub-sea apparatus and operating method

#131
20130068464
2013-03-21

Methods, systems and apparatus for circulating fluid within the annulus of a flexible pipe riser

#132
20130064607
2013-03-14

Underwater device for ROV installable tools

#133
20130058732
2013-03-07

DEVICE FOR REMOTE-CONTROLLED, SUBMARINE MACHINING UNIT

#134
20130025854
2013-01-31

Method and system for sampling multi-phase fluid at a production wellsite

#135
20130008661
2013-01-10

Subsea well intervention module

#136
20130008151
2013-01-10

SYSTEMS AND METHODS FOR ROV MULTITASKING

#137
20130000919
2013-01-03

Oil well control system

#138
20120315096
2012-12-13

RIGLESS INTERVENTION

#139
20120273212
2012-11-01

FLANGE SEPARATION AND RETRIEVAL TOOL

#140
20120267116
2012-10-25

FLANGE OVERSHOT RETRIEVAL TOOL

#141
20120266803
2012-10-25

High power laser photo-conversion assemblies, apparatuses and methods of use

#142
20120241159
2012-09-27

Remote operated vehicle interface with overtorque protection

#143
20120227974
2012-09-13

Method for pulling a crown plug

#144
20120211232
2012-08-23

Subsea conductor anchor

#145
20120186039
2012-07-26

ROV drive bucket plug

#146
20120175123
2012-07-12

Separation device

#147
20120103620
2012-05-03

Remotely operated underwater redirection plenum chamber for spill response

#148
20120090152
2012-04-19

Apparatus and method for the connection of conduits

#149
20120085543
2012-04-12

Backup wellhead blowout prevention system and method

#150
20120082535
2012-04-05

Submersible robot for operating a tool relative to a surface of an underwater structure

#151
20120080193
2012-04-05

Running tool for deep water

#152
20120048565
2012-03-01

Torque tripping mechanism for a valve

#153
20110241336
2011-10-06

Leadscrew and sub-sea connector

#154
20110240303
2011-10-06

SUBSEA WELL INTERVENTION MODULE

#155
20110192609
2011-08-11

Retrievable subsea bridge tree assembly and method

#156
20110168400
2011-07-14

SYSTEM AND METHOD FOR CONNECTING AND ALIGNING A COMPLIANT GUIDE

#157
20110164926
2011-07-07

Method and apparatus for subsea installations

#158
20110088909
2011-04-21

Stabplate connections

#159
20110056697
2011-03-10

Method and system for the extinction of an underwater well for the extraction of hydrocarbons under uncontrolled fluid discharge conditions

#160
20110025526
2011-02-03

Communication system for a hydrocarbon extraction plant

#161
20110005765
2011-01-13

Sampling skid for subsea wells

#162
20100294486
2010-11-25

Self-inserting seal assembly

#163
20100186964
2010-07-29

Connection device

#164
20100163244
2010-07-01

Rigless abandonment system

#165
20100098497
2010-04-22

VORTEX INDUCED VIBRATION SUPPRESSION SYSTEMS AND METHODS

#166
20100090639
2010-04-15

Control system of an actuator for the actuation of submarine devices

#167
20100059221
2010-03-11

SUBSEA FLUID SAMPLING AND ANALYSIS

#168
20100044052
2010-02-25

SYSTEM AND METHOD FOR CONNECTING AND ALIGNING A COMPLIANT GUIDE

#169
20090283274
2009-11-19

Connector assembly for connecting a hot stab to a hydraulic hose

#170
20090255681
2009-10-15

Off-center running tool for subsea tree

#171
20090252559
2009-10-08

Underwater device for ROV installable tools

#172
20090252558
2009-10-08

UNDERWATER DEVICE FOR ROV INSTALLABLE TOOLS

#173
20090233774
2009-09-17

Subsea tool changer

#174
20090056936
2009-03-05

Subsea Structure Load Monitoring and Control System

#175
20080302535
2008-12-11

Subsea Intervention Riser System

#176
20080286050
2008-11-20

Stab and hinge-over pipeline and terminal assembly

#177
20080230227
2008-09-25

Control system of an actuator for the actuation of submarine devices

#178
20080087436
2008-04-17

Subsea tree cap and method for installing the subsea tree cap

#179
20080035327
2008-02-14

Method and frame

#180
20070253158
2007-11-01

Subsea docking system for electronic modules in subsea installations

#181
20070227740
2007-10-04

Flying Lead Connector and Method for Making Subsea Connections

#182
20070214670
2007-09-20

Adjustable support apparatus and method

#183
20070104031
2007-05-10

Navigation processor, a system comprising such a navigation processor and a method of controlling an underwater system by such a navigation processor

#184
20060090898
2006-05-04

Subsea junction plate assembly running tool and method of installation

#185
20060016621
2006-01-26

Method and system for deep sea drilling

#186
20050189115
2005-09-01

Subsea intervention

#187
20050175415
2005-08-11

Apparatus and methods for remote installation of devices for reducing drag and vortex induced vibration

#188
20050163573
2005-07-28

Methods for remote installation of devices for reducing drag and vortex induced vibration

#189
19185874
2025-11-25

Device and method for rapidly regulating downhole pressure after kick in deepwater shallow open-circuit drilling

#190
18799869
2025-06-17

Tubing head spools with orientation feature

#191
18420001
2025-02-11

Offshore platform slot recovery tool system

#192
17932988
2023-11-07

Submersible remote operated vehicle vision assistance and control

#193
17860621
2024-01-09

Offshore platform slot recovery tool system

#194
17338548
2022-07-12

Offshore platform slot recovery tool system

#195
16598662
2020-09-22

Process for non-vertical installation and removal of a subsea structure

#196
16228065
2020-03-17

Select mode subsea electronics module

#197
15454790
2018-02-13

Clamping system having mechanical advantage

#198
14156015
2015-07-07

Method and system for protecting wellhead integrity