ClassID:

135546

E21B36/005 - CPC Classification

Classification description:

Heating, cooling, insulating arrangements for boreholes or wells, e.g. for use in permafrost zones Heater surrounding production tube

Recent Application in this class:
#1
20250137354
2025-05-01

SUBSEA HEAT BANK WITH PCM HEAT STORING MEMBER

#2
20240200424
2024-06-20

HEAT TREATING TUBULARS

#3
20230313784
2023-10-05

Use of concentrated solar to enhance the power generation of the turboexpander in gas wells

#4
20230313643
2023-10-05

Gas condensate removal heating system

#5
20230287766
2023-09-14

Production logging inversion based on LFDAS/DTS

#6
20230265740
2023-08-24

Subsea Induction Heating System and Related Method

#7
20230184060
2023-06-15

Heat treating tubulars

#8
20230123313
2023-04-20

Subsea heating apparatus for heating a subsea component, such as subsea pipeline, related subsea heating assembly, subsea heating system, oil and gas production installation and manufacturing method

#9
20220112793
2022-04-14

Selective heating of fluid components with microwaves to change viscosity ratio in downhole fluid devices

#10
20220090472
2022-03-24

Subsea field architecture

#11
20220034209
2022-02-03

Thermal energy delivery and oil production arrangements and methods thereof

#12
20220018230
2022-01-20

Heating of subsea pipelines

#13
20220010910
2022-01-13

Spirally heating submarine pipeline

#14
20210404295
2021-12-30

Method and device for exploiting natural gas hydrate from marine rock

#15
20210238972
2021-08-05

Production logging inversion based on DAS/DTS

#16
20210207749
2021-07-08

Termination of a flexible pipe

#17
20210054721
2021-02-25

In-situ heating fluids with electromagnetic radiation

#18
20200232308
2020-07-23

Thermal energy delivery and oil production arrangements and methods thereof

#19
20200056452
2020-02-20

Methods and systems for a tool with encapsulated heating cable within a wellbore

#20
20190178056
2019-06-13

In-situ heating fluids with electromagnetic radiation

#21
20190100971
2019-04-04

Horizontal connection system for subsea hub connections

#22
20190048685
2019-02-14

In-situ heating fluids with electromagnetic radiation

#23
20180283588
2018-10-04

TERMINATION OF A FLEXIBLE PIPE

#24
20180112495
2018-04-26

Pipeline insulated remediation system and installation method

#25
20180087694
2018-03-29

Subsea pipe-in-pipe structures

#26
20180087327
2018-03-29

Termination bulkheads for subsea pipe-in-pipe systems

#27
20180051539
2018-02-22

Sealing arrangements for subsea pipe-in-pipe systems

#28
20180031164
2018-02-01

Subsea pipe-in-pipe structures

#29
20180023767
2018-01-25

Sealing arrangements for subsea pipe-in-pipe systems

#30
20170247994
2017-08-31

Thermally Assisted Oil Production Wells

#31
20170247992
2017-08-31

Comprehensive enhanced oil recovery system

#32
20170241247
2017-08-24

Pulsing pressure waves enhancing oil and gas extraction in a reservoir

#33
20170204701
2017-07-20

Hydrocarbon heating system

#34
20170089187
2017-03-30

Thermal energy delivery and oil production arrangements and methods thereof

#35
20170051589
2017-02-23

Production riser with a gas lift facility

#36
20160258255
2016-09-08

Underwater oil pipeline heating systems

#37
20160084052
2016-03-24

System, apparatus and method for producing a well

#38
20160024887
2016-01-28

System for controlling temperature of subsea equipment

#39
20150252950
2015-09-10

Underwater oil pipeline heating systems

#40
20150136388
2015-05-21

In-situ rock testing tool

#41
20150122503
2015-05-07

Marine subsea free-standing riser systems and methods

#42
20140374101
2014-12-25

Heating production fluids in a wellbore

#43
20140262224
2014-09-18

RF antenna assembly with feed structure having dielectric tube and related methods

#44
20140246196
2014-09-04

THROTTLING BOILER FOR FOULING MITIGATION

#45
20140144647
2014-05-29

Subterranean channel for transporting a hydrocarbon for prevention of hydrates and provision of a relief well

#46
20140137951
2014-05-22

Underwater oil pipeline heating systems

#47
20130199615
2013-08-08

System for controlling temperature of subsea equipment

#48
20130153230
2013-06-20

Mitigation of hydrates, paraffins and waxes in well tools

#49
20130075097
2013-03-28

BOREHOLE TOOL HEAT TRANSFER ALTERING SYSTEM AND METHOD, AND METHOD OF HEATING BOREHOLE FLUID

#50
20120298367
2012-11-29

Earth heat transfer loop appartus

#51
20120217000
2012-08-30

Low-voltage direct electrical heating LVDEH flexible pipes risers

#52
20120138183
2012-06-07

Method for manufacturing rigid tubular pipes having double casing, and facility dedicated to manufacture of said pipes

#53
20120085544
2012-04-12

Marine subsea free-standing riser systems and methods

#54
20100243201
2010-09-30

Earth heat transfer loop apparatus

#55
20100206573
2010-08-19

METHOD AND APPARATUS FOR COOLING A GASEOUS HYDROCARBON STREAM

#56
20100139924
2010-06-10

Method and apparatus for removing plugs from subsea equipment through the use of exothermic reacting chemicals

#57
20090166032
2009-07-02

Inline downhole heater and methods of use

#58
20080002954
2008-01-03

Inline downhole heater

#59
20070119592
2007-05-31

Earth heat transfer loop apparatus

#60
20060081376
2006-04-20

Hydraulic friction fluid heater and method of using same

#61
20060051080
2006-03-09

Oilfield tool annulus heater

#62
20050224223
2005-10-13

Heating apparatus for wells

#63
20050205260
2005-09-22

Wellbore rig with heat transfer loop apparatus

#64
20050135796
2005-06-23

In line oil field or pipeline heating element

#65
20050061512
2005-03-24

Hydraulic friction fluid heater and method of using same