Patents-Review.com
ClassID:

135633 ⎘

E21B43/18 - CPC Classification

Classification description:

Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells; Enhanced recovery methods for obtaining hydrocarbons Repressuring or vacuum methods

Recent Application in this class:
#1
20250314162
2025-10-09

Non-fracturing Restimulation of Unconventional Hydrocarbon Containing Formations to Enhance Production

 #2
20240384640
2024-11-21

A METHOD AND SYSTEM FOR REMEDIATING A WELLBORE

 #3
20240271511
2024-08-15

Non-fracturing restimulation of unconventional hydrocarbon containing formations to enhance production

 #4
20230012112
2023-01-12

Ejector manifold and subsurface process to harvest low-pressure natural gas

 #5
20220120166
2022-04-21

VESSEL-BASED WATER INJECTION SYSTEMS

 #6
20210277757
2021-09-09

Pressure assisted oil recovery

 #7
20210222501
2021-07-22

Vacuum Manifold Assembly

 #8
20210215025
2021-07-15

Fluid retrieval using annular cleaning system

 #9
20210095544
2021-04-01

Lifting condensate from wellbores

 #10
20210040828
2021-02-11

Vacuum generator device through supersonic impulsion for oil wells

 #11
20210017842
2021-01-21

Non-fracturing restimulation of unconventional hydrocarbon containing formations to enhance production

 #12
20200232305
2020-07-23

Pressurized test device and method for in-situ mining natural gas hydrates by jets

 #13
20200088187
2020-03-19

Linear hydraulic pump and its application in well pressure control

 #14
20200018141
2020-01-16

Use of natural gas for well enhancement

 #15
20190390539
2019-12-26

Pressure assisted oil recovery

 #16
20190226309
2019-07-25

Intermittent fracture flooding process

 #17
20190218882
2019-07-18

Shoe isolation system and method for isolating a shoe

 #18
20190120029
2019-04-25

USE OF NATURAL GAS FOR DELIQUIFICATION

 #19
20190032461
2019-01-31

Non-fracturing restimulation of unconventional hydrocarbon containing formations to enhance production

 #20
20180371884
2018-12-27

Method for producing from gas slugging reservoirs

 #21
20180347328
2018-12-06

Method for recovering hydrocarbons from low permeability formations

 #22
20180334894
2018-11-22

GAS PUMPING UNIT FOR OIL WELLS

 #23
20180216449
2018-08-02

Blowdown pressure maintenance with foam

 #24
20180171768
2018-06-21

Apparatus and method for potable water extraction from saline aquifers

 #25
20180087366
2018-03-29

Wellbore system

 #26
20170226834
2017-08-10

Intermittent fracture flooding process

 #27
20170175506
2017-06-22

Pressure assisted oil recovery

 #28
20170051596
2017-02-23

Pressure swing solvent assisted well stimulation

 #29
20160130920
2016-05-12

Downhole pumping apparatus and method

 #30
20150275601
2015-10-01

Separation of drilling fluid

 #31
20150167436
2015-06-18

Method to maintain reservoir pressure during hydrocarbon recovery operations using electrical heating means with or without injection of non-condensable gases

 #32
20150152721
2015-06-04

Use of ionized fluid in hydraulic fracturing

 #33
20150053406
2015-02-26

Pre-tensing sections of concentric tubulars

 #34
20150020542
2015-01-22

Underwater gas field development methods and systems

 #35
20150013993
2015-01-15

DOWNHOLE CONSTRUCTION OF VACUUM INSULATED TUBING

 #36
20140360733
2014-12-11

Controlled geyser well

 #37
20140345868
2014-11-27

METHOD OF MAINTAINING OIL RESERVOIR PRESSURE

 #38
20140209312
2014-07-31

Use of ionized water in hydraulic fracturing

 #39
20140202704
2014-07-24

Subsea compression

 #40
20130233539
2013-09-12

Increasing oil production

 #41
20130146280
2013-06-13

Microbial enhanced oil recovery process for heavy oil accumulations

 #42
20130109598
2013-05-02

Method of oil extraction

 #43
20130032336
2013-02-07

Establishing communication between well pairs in oil sands by dilation with steam or water circulation at elevated pressures

 #44
20120292055
2012-11-22

Pressure assisted oil recovery

 #45
20120175110
2012-07-12

In situ combustion in gas over bitumen formations

 #46
20120168158
2012-07-05

ENHANCED HYDROCARBON RECOVERY FROM LOW MOBILITY RESERVOIRS

 #47
20120118563
2012-05-17

Isolating wet connect components for deployed electrical submersible pumps

 #48
20120073836
2012-03-29

Methods for increasing oil production

 #49
20110272149
2011-11-10

In situ combustion in gas over bitumen formations

 #50
20110000221
2011-01-06

Low emission power generation and hydrocarbon recovery systems and methods

 #51
20100126737
2010-05-27

Methods for increasing oil production

 #52
20100126719
2010-05-27

Increasing oil production

 #53
20090200017
2009-08-13

METHOD AND DEVICE FOR TREATING BOTTOM-HOLE ZONES OF OIL-AND-GAS-BEARING FORMATIONS

 #54
20090151954
2009-06-18

Subsea hydraulic and pneumatic power

 #55
20090056941
2009-03-05

Methods for producing oil and/or gas

 #56
20080185151
2008-08-07

Hydrocarbon production system and method of use

 #57
20080093071
2008-04-24

In situ combustion in gas over bitumen formations

 #58
20070079960
2007-04-12

Well treatment system and method

 #59
20050279505
2005-12-22

System for recovering downhole oil and gas from economically nonviable wells

 #60
20050167103
2005-08-04

Applications of waste gas injection into natural gas reservoirs

 #61
20050072574
2005-04-07

System and method for injecting gas into a hydrocarbon reservoir

 #62
20050061506
2005-03-24

Well treatment system and method