ClassID:

135577

E21B41/08 - CPC Classification

Classification description:

Equipment or details not covered by groups  -  Underwater guide bases, e.g. drilling templates; Levelling thereof

Recent Application in this class:
#1
20260092509
2026-04-02

SUPPORT SYSTEMS FOR SUBSEA WELLBORES

#2
20250369316
2025-12-04

METHOD FOR PROVIDING A SUBSEA TEMPLATE SYSTEM WITH A TAIL PIPE AND A SUBSEA TEMPLATE SYSTEM

#3
20250283393
2025-09-11

SYSTEM AND METHOD FOR LANDING RETRIEVABLE PROCESS MODULE

#4
20240141757
2024-05-02

Subsea template for injecting fluid for long term storage in a subterranean void and method of controlling a subsea template

#5
20230243242
2023-08-03

Compliant well insert sleeves

#6
20230135913
2023-05-04

NON-METALLIC SUBSEA SKID APPARATUS AND METHODS

#7
20220412038
2022-12-29

SUBSEA ASSEMBLY MODULARIZATION

#8
20220412037
2022-12-29

Subsea assembly modularization

#9
20220403715
2022-12-22

Module, a system and a method for daisy chaining of satellite wells

#10
20220341274
2022-10-27

Subsea wellhead support system and associated method of installing a subsea wellhead support system

#11
20220120154
2022-04-21

Systems and methods for tethering subsea blow-out-preventers

#12
20210164190
2021-06-03

System and method for foundation of wellheads

#13
20210140279
2021-05-13

Landing system for subsea equipment

#14
20210054723
2021-02-25

Integrating wells in towable subsea units

#15
20200385949
2020-12-10

Subsea assembly modularization

#16
20200173244
2020-06-04

Subsea wellhead assembly

#17
20200086952
2020-03-19

Suction anchor for a subsea well

#18
20200071904
2020-03-05

Mat incorporated pile anchor reinforcement systems

#19
20200018134
2020-01-16

Particular relating to subsea well construction

#20
20190376250
2019-12-12

Subsea assembly modularisation

#21
20190323325
2019-10-24

A FLOW BASE SYSTEM FOR SUBSEA WELLS

#22
20190194895
2019-06-27

METHODS AND APPARATUS FOR FORMING AN OFFSHORE WELL

#23
20190145229
2019-05-16

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

#24
20190085645
2019-03-21

Device and method for slanting a conductor casing

#25
20190055822
2019-02-21

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

#26
20190040706
2019-02-07

Subsea tree override tool apparatus and method

#27
20190032427
2019-01-31

Apparatus and methods for supporting a subsea well

#28
20180355699
2018-12-13

System and method for foundation of wellheads

#29
20180355574
2018-12-13

Pile guide frame coupled with rotatable arm

#30
20180347140
2018-12-06

System and method for foundation of wellheads

#31
20180347135
2018-12-06

Offshore drilling and a configurable support structure for the same

#32
20180298711
2018-10-18

Systems for removing blockages in subsea flowlines and equipment

#33
20180274301
2018-09-27

Method for excavating mud line cellar for subsea well drilling

#34
20180258742
2018-09-13

SUBSEA MANIFOLD SYSTEM

#35
20180223622
2018-08-09

Wellbore cement management system

#36
20180171574
2018-06-21

System and method for establishing a multi-well foundation comprising an alignment template for suction foundation units

#37
20180163518
2018-06-14

SUBSEA TEMPLATE ARCHITECTURE

#38
20180128085
2018-05-10

Landing string measurement system and method including a power assembly providing power to a data-storage

#39
20180003008
2018-01-04

Subsea wellhead assembly

#40
20170328162
2017-11-16

Subsea equipment-protection apparatus

#41
20170175491
2017-06-22

Segmented guide funnel

#42
20160273317
2016-09-22

Landing string compensator

#43
20160115667
2016-04-28

Device for anchoring a raceway mounting of a seabed-to-surface facility

#44
20150372470
2015-12-24

Inclined conductor device

#45
20150345274
2015-12-03

Subsea processing of well fluids

#46
20150300530
2015-10-22

Modular frame system and method for holding subsea equipment

#47
20150197989
2015-07-16

UNDERWATER DRILLING RIG ASSEMBLY AND METHOD OF OPERATING THE UNDERWATER DRILLING RIG ASSEMBLY

#48
20150188315
2015-07-02

Methods and systems for subsea direct current power distribution

#49
20140131048
2014-05-15

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

#50
20140076574
2014-03-20

Method and system for installing subsea well trees

#51
20130284444
2013-10-31

Systems, spacer devices and methods for aligning multi-well modular templates and associated wells

#52
20130264117
2013-10-10

Drop away funnel for modular drilling templates

#53
20130240216
2013-09-19

BOP lock down

#54
20130220206
2013-08-29

Subsea anchor

#55
20120315097
2012-12-13

Method for producing an underwater foundation element, adjustment head for an underwater foundation element and underwater working arrangement

#56
20120000665
2012-01-05

WELL TEMPLATE AND METHOD FOR USE THEREOF

#57
20110303417
2011-12-15

Subsea well template

#58
20110168402
2011-07-14

Offshore unit and method of installing wellhead platform using the offshore unit

#59
20110056696
2011-03-10

Subsea drilling

#60
20100147526
2010-06-17

METHOD AND A DEVICE FOR INTERVENTION IN AN UNDERWATER PRODUCTION WELL

#61
20100135728
2010-06-03

MOBILE OFFSHORE DRILLING AND PRODUCTION PLATFORM

#62
20100132938
2010-06-03

CONDUCTOR PIPE STRING DEFLECTOR AND METHOD OF USING SAME

#63
20100058967
2010-03-11

Device for cutting out and opening/closing an orifice in a wall at the bottom of the sea

#64
20090255683
2009-10-15

Landing string compensator

#65
20090200036
2009-08-13

Method for Subsea Hydrocarbon Recovery

#66
20090008099
2009-01-08

Centralization and running tool and method

#67
20080121429
2008-05-29

Subsea drilling

#68
20080093082
2008-04-24

Underwater seafloor drilling rig

#69
20070246620
2007-10-25

Movable supporting construction

#70
20070215218
2007-09-20

Device for removal and filtration of drilling fluid

#71
20060243436
2006-11-02

Conductor pipe string deflector and method of using same

#72
20060054328
2006-03-16

Process of installing compliant offshore platforms for the production of hydrocarbons

#73
20050167117
2005-08-04

Underwater installation apparatus

#74
15967103
2019-09-17

Multi-environment self-elevating drilling platform