ClassID:

135589

E21B43/02 - CPC Classification

Classification description:

Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells Subsoil filtering

Sub-classes:
Recent Application in this class:
#1
20250043651
2025-02-06

ELECTRIC COMPLETION SYSTEM AND METHODOLOGY

#2
20250034952
2025-01-30

Downhole wet-mate systems with offset stinger and methods for deployment and wet-mate connecting by rotation of the offset stinger

#3
20240384628
2024-11-21

METHOD AND SYSTEM FOR PREDICTING SAND FAILURE IN A HYDROCARBON PRODUCTION WELL AND METHOD AND SYSTEM FOR PRODUCING HYDROCARBON FLUIDS FROM AN EARTH FORMATION

#4
20240301771
2024-09-12

DOWNHOLE DEVICE FOR HYDROCARBON PRODUCING WELLS WITHOUT CONVENTIONAL TUBING

#5
20240191609
2024-06-13

DOWNHOLE SAND TRAP

#6
20240060406
2024-02-22

Fracturing a subsurface formation based on the required breakdown pressure accounting for filter cake

#7
20230070942
2023-03-09

Acid-resistant tool for oil or gas well

#8
20230050121
2023-02-16

IN-SITU FINES CAPTURE FROM FLUID FINE TAILINGS

#9
20220348819
2022-11-03

Flow control in subterranean wells

#10
20220325611
2022-10-13

Tool deployment and cleanout system

#11
20220268134
2022-08-25

Automated Waste Disposal System for Waste Tank at Wellsite

#12
20220259951
2022-08-18

Method of increasing well bottomhole resistance to destruction

#13
20220177769
2022-06-09

Filter plug to prevent proppant flowback

#14
20220120164
2022-04-21

Downhole device for hydrocarbon producing wells without conventional tubing

#15
20220003081
2022-01-06

Thermoset swellable devices and methods of using in wellbores

#16
20220003080
2022-01-06

WATER REMOVAL FROM ELECTRIC SUBMERSIBLE PUMP SYSTEMS

#17
20210404295
2021-12-30

Method and device for exploiting natural gas hydrate from marine rock

#18
20210355792
2021-11-18

RETROFIT FLUID AND GAS PERMEABLE BARRIER FOR WELLBORE USE

#19
20200208494
2020-07-02

Expanding thermite reactions for downhole applications

#20
20200131891
2020-04-30

Shunt tube assembly entry device

#21
20200096663
2020-03-26

Method for determining properties of a thinly laminated formation by inversion of multisensor wellbore logging data

#22
20200088012
2020-03-19

Methods and apparatuses for controlling fines migration in a wellbore

#23
20200039839
2020-02-06

Process to provide source water and manage produced/flowback water for hydraulic fracturing

#24
20190106966
2019-04-11

Method of filtering a wellbore fluid

#25
20190040736
2019-02-07

Open smart completion

#26
20180363427
2018-12-20

Filter assembly

#27
20180363426
2018-12-20

Centrifugal particle accumulator and filter

#28
20180266219
2018-09-20

Shunt system for downhole sand control completions

#29
20180156021
2018-06-07

System and method for removing sand from a wellbore

#30
20180135388
2018-05-17

Modular downhole debris separating assemblies

#31
20180058190
2018-03-01

Load-monitoring sensor proximate to a shifting device

#32
20170314370
2017-11-02

Downhole method and apparatus

#33
20170226827
2017-08-10

METHODS OF TREATING A SUBTERRANEAN FORMATION WITH SHRINKABLE FIBERS

#34
20170211358
2017-07-27

Centrifugal particle accumulator

#35
20170096877
2017-04-06

Flushable velocity fuse and screen assembly for downhole systems

#36
20170089196
2017-03-30

Systems and methods for formation sampling

#37
20170044870
2017-02-16

Linearly indexing wellbore valve

#38
20160362597
2016-12-15

Method for treatment of underground reservoirs

#39
20160281474
2016-09-29

Downhole method and apparatus

#40
20160281468
2016-09-29

Wellbore isolation while placing valves on production

#41
20160273319
2016-09-22

Downhole flow control apparatus with screen

#42
20160222772
2016-08-04

Pseudoelastic Materials as Additives to Enhance Hydraulic Fracturing

#43
20160177696
2016-06-23

Down-hole sand and solids separator utilized in producing hydrocarbons

#44
20160153263
2016-06-02

Sand control assemblies including flow rate regulators

#45
20160108707
2016-04-21

METHODS OF TREATING A SUBTERRANEAN FORMATION WITH SHRINKABLE FIBERS

#46
20150300131
2015-10-22

Self-degradable hydraulic diversion systems and methods for making and using same

#47
20150298030
2015-10-22

Method for preparing a porous fluoropolymer and preparing an article of same, a rigid porous fluoropolymer flow sleeve and a method of controlling flow

#48
20150203739
2015-07-23

Method and composition for remedial treatment of parafin, asphaltenes, scale and deposits in oil and gas infrastructure and subterranean formations

#49
20150096749
2015-04-09

Method for removing contaminants from wastewater in hydraulic fracturing process

#50
20150083388
2015-03-26

STEAM-IMPULSE PRESSURE GENERATOR FOR THE TREATMENT OF OIL WELLS

#51
20140318810
2014-10-30

Manipulatable filter system

#52
20140318777
2014-10-30

Scale prevention treatment method, system, and apparatus for wellbore stimulation

#53
20140262203
2014-09-18

Polymer coated sand and methods of manufacture and use

#54
20140231083
2014-08-21

Fluid filtering device for a wellbore and method for completing a wellbore

#55
20140196903
2014-07-17

Method for removing contaminants from wastewater in hydraulic fracturing process

#56
20140069644
2014-03-13

Wellbore Servicing Compositions and Methods of Making and Using Same

#57
20140054050
2014-02-27

Gas Fracture Injection to Overcome Retrograde Condensation in Gas Wells

#58
20130341005
2013-12-26

Downhole method and apparatus

#59
20130319658
2013-12-05

Wellbore isolation while placing valves on production

#60
20130233533
2013-09-12

Deep-well pump system

#61
20130048129
2013-02-28

Method and apparatus for selectively controlling fluid flow

#62
20130032352
2013-02-07

Down-hole sand and solids separator utilized in producing hydrocarbons

#63
20120305238
2012-12-06

High Temperature Crosslinked Polysulfones Used for Downhole Devices

#64
20120273196
2012-11-01

Segmental flow control method and apparatus for a flow control filter string in an oil-gas well

#65
20120118579
2012-05-17

Multi-position valve for fracturing and sand control and associated completion methods

#66
20120067587
2012-03-22

Polymer foam cell morphology control and use in borehole filtration devices

#67
20120012307
2012-01-19

Method for removing contaminants from wastewater in hydraulic fracturing process

#68
20110139455
2011-06-16

Storing device for stored substance and method for storing stored substance

#69
20110120726
2011-05-26

Multi-position valve for fracturing and sand control and associated completion methods

#70
20110042067
2011-02-24

SUBSURFACE DISCRETE INTERVAL SYSTEM WITH VERIFIABLE INTERVAL ISOLATION

#71
20100199757
2010-08-12

Apparatus and method for testing reservoir drilling fluids for drilling unconsolidated tar sands

#72
20090260814
2009-10-22

System and Method to Facilitate Treatement and Sand Control in a Wellbore

#73
20090255686
2009-10-15

Method for providing a temporary barrier in a flow pathway

#74
20090205834
2009-08-20

Adjustable flow control devices for use in hydrocarbon production

#75
20090101342
2009-04-23

Permeable medium flow control devices for use in hydrocarbon production

#76
20090078408
2009-03-26

Apparatus for providing a temporary degradable barrier in a flow pathway

#77
20090044944
2009-02-19

Multi-position valve for fracturing and sand control and associated completion methods

#78
20070199368
2007-08-30

Apparatus and method for testing reservoir drilling fluids for drilling unconsolidated tar sands

#79
20070007005
2007-01-11

Systems and methods for installation, design and operation of groundwater monitoring systems in boreholes

#80
20060131024
2006-06-22

Accessing subterranean resources by formation collapse

#81
20060112862
2006-06-01

Permeable cement and sand control methods utilizing permeable cement in subterranean well bores

#82
20050145386
2005-07-07

Permeable cement composition and method for preparing the same

#83
20050145141
2005-07-07

Permeable cement composition and method for preparing the same

#84
20050092363
2005-05-05

Method for providing a temporary barrier in a flow pathway