ClassID:

135591

E21B43/04 - page 3 - 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 Gravelling of wells

Recent Application in this class:
#601
20090173503
2009-07-09

Delayed acting gravel pack fluid loss valve

#602
20090166045
2009-07-02

HARVESTING VIBRATION FOR DOWNHOLE POWER GENERATION

#603
20090159298
2009-06-25

Methods and systems for completing a well with fluid tight lower completion

#604
20090159270
2009-06-25

Shunt tube connector lock

#605
20090151942
2009-06-18

SAND CONTROL SYSTEM AND METHOD FOR CONTROLLING SAND PRODUCTION

#606
20090139717
2009-06-04

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

#607
20090137432
2009-05-28

pH Sensitive Emulsion System

#608
20090133875
2009-05-28

Gravel packing apparatus utilizing diverter valves

#609
20090124522
2009-05-14

Cement compositions and methods utilizing nano-hydraulic cement

#610
20090120641
2009-05-14

Well flow control systems and methods

#611
20090101343
2009-04-23

HIGH RATE GRAVEL PACKING

#612
20090095471
2009-04-16

Multi-zone gravel pack system with pipe coupling and integrated valve

#613
20090090506
2009-04-09

Downhole release of friction reducers in gravel packing operations

#614
20090084549
2009-04-02

Downhole tools having screens for insertion into gravel disposed in wellbores and methods of installing same

#615
20090065207
2009-03-12

Well treatment to inhibit fines migration

#616
20090025932
2009-01-29

System and method for low damage gravel packing

#617
20090008092
2009-01-08

Wellbore method and apparatus for sand and inflow control during well operations

#618
20080314589
2008-12-25

System and method for creating a gravel pack

#619
20080314588
2008-12-25

SYSTEM AND METHOD FOR CONTROLLING EROSION OF COMPONENTS DURING WELL TREATMENT

#620
20080296019
2008-12-04

Completion method for fracturing and gravel packing

#621
20080283252
2008-11-20

SYSTEM AND METHOD FOR MULTI-ZONE WELL TREATMENT

#622
20080277114
2008-11-13

Screen saver sub

#623
20080190608
2008-08-14

Gravel pack multi-pathway tube with control line retention and method for retaining control line

#624
20080185146
2008-08-07

Reduced friction pressure gravel pack slurry

#625
20080164027
2008-07-10

Tool and method of performing rigless sand control in multiple zones

#626
20080164026
2008-07-10

Method of isolating and completing multi-zone frac packs

#627
20080142227
2008-06-19

Wellbore method and apparatus for completion, production and injection

#628
20080142218
2008-06-19

Method and apparatus for completing a well

#629
20080128130
2008-06-05

System and method for facilitating downhole operations

#630
20080128129
2008-06-05

Gravel packing methods

#631
20080110619
2008-05-15

Methods of using substantially hydrated cement particulates in subterranean applications

#632
20080087431
2008-04-17

Apparatus and method for controlled deployment of shape-conforming materials

#633
20080073080
2008-03-27

Washpipeless frac pack system

#634
20080066900
2008-03-20

Gravel pack apparatus that includes a swellable element

#635
20080000636
2008-01-03

Method of repairing failed gravel packs

#636
20070246226
2007-10-25

Apparatus and methods for limiting debris flow back into an underground base pipe of an injection well

#637
20070246213
2007-10-25

Gravel packing screen with inflow control device and bypass

#638
20070235185
2007-10-11

Measuring a characteristic of a well proximate a region to be gravel packed

#639
20070227731
2007-10-04

System and method for controlling wellbore pressure during gravel packing operations

#640
20070187095
2007-08-16

Single trip horizontal gravel pack and stimulation system and method

#641
20070185655
2007-08-09

Wellbore diagnostic system and method

#642
20070181200
2007-08-09

Automatic control line insertion tools and system

#643
20070131421
2007-06-14

Multiple entrance shunt

#644
20070125535
2007-06-07

Method for gravel or frac packing in a wellbore and for monitoring the packing process

#645
20070119590
2007-05-31

Apparatus and method for gravel packing

#646
20070114043
2007-05-24

Reverse out valve for well treatment operations

#647
20070114027
2007-05-24

Wellbore gravel packing apparatus and method

#648
20070102153
2007-05-10

Screen and method having a partial screen wrap

#649
20070084608
2007-04-19

Screen and method having a partial screen wrap

#650
20070084600
2007-04-19

Heavy wax stimulation diverting agent

#651
20070079960
2007-04-12

Well treatment system and method

#652
20070068675
2007-03-29

Method for drilling and completing wells

#653
20070066491
2007-03-22

Thermoset nanocomposite particles, processing for their production, and their use in oil and natural gas drilling applications

#654
20070062686
2007-03-22

Flow nozzle assembly

#655
20070051507
2007-03-08

Fracturing/gravel packing tool system with dual flow capabilities

#656
20070039741
2007-02-22

Sand control screen assembly enhanced with disappearing sleeve and burst disc

#657
20070034369
2007-02-15

Controlling transient pressure conditions in a wellbore

#658
20070029086
2007-02-08

Methods of forming packs in a plurality of perforations in a casing of a wellbore

#659
20070017673
2007-01-25

Determining and tracking downhole particulate deposition

#660
20060283791
2006-12-21

Filter valve for fluid loss device

#661
20060283604
2006-12-21

Shunt tube connector lock

#662
20060279078
2006-12-14

Joining tubular members

#663
20060272815
2006-12-07

Invert emulsion carrier fluid and oil-wetting agent and method of using same

#664
20060266521
2006-11-30

Cavity well system

#665
20060260795
2006-11-23

Stop-sand liner hanger assembly for water wells

#666
20060243440
2006-11-02

Washpipeless frac pack system

#667
20060237197
2006-10-26

Wellbore apparatus and method for completion, production and injection

#668
20060231253
2006-10-19

Horizontal single trip system with rotating jetting tool

#669
20060219404
2006-10-05

Gravel pack multi-pathway tube with control line retention and method for retaining control line

#670
20060196661
2006-09-07

Methods relating to maintaining the structural integrity of deviated well bores

#671
20060192039
2006-08-31

In situ filter construction

#672
20060169465
2006-08-03

Bi-directional fluid loss device and method

#673
20060169464
2006-08-03

Positioning tool with valved fluid diversion path and method

#674
20060162927
2006-07-27

Single trip horizontal gravel pack and stimulation system and method

#675
20060162926
2006-07-27

Methods of using substantially hydrated cement particulates in subterranean applications

#676
20060124304
2006-06-15

Method of creating a zonal isolation in an underground wellbore

#677
20060118299
2006-06-08

Methods of controlling particulate segregation in slurries

#678
20060108115
2006-05-25

System and method for fracturing and gravel packing a wellbore

#679
20060108114
2006-05-25

Drilling method for maintaining productivity while eliminating perforating and gravel packing

#680
20060086498
2006-04-27

Harvesting Vibration for Downhole Power Generation

#681
20060048938
2006-03-09

Carbon foam particulates and methods of using carbon foam particulates in subterranean applications

#682
20060042836
2006-03-02

Freer flowing liquid-solid suspensions and methods of use in subterranean formations

#683
20050284643
2005-12-29

Flow nozzle assembly

#684
20050274513
2005-12-15

System and method for determining downhole conditions

#685
20050236153
2005-10-27

Deploying an assembly into a well

#686
20050200127
2005-09-15

Joining tubular members

#687
20050189117
2005-09-01

Method and apparatus for selective injection or flow control with through-tubing operation capacity

#688
20050178547
2005-08-18

Apparatus and method for gravel packing

#689
20050139394
2005-06-30

Expandable screen utilizing near neutrally-buoyant particles outside of the screen

#690
20050139355
2005-06-30

Workstring and a method for gravel packing

#691
20050098324
2005-05-12

Expandable tubular with port valve

#692
20050087346
2005-04-28

Screen and method having a partial screen wrap

#693
20050074196
2005-04-07

Gravel pack completion with fiber optic monitoring

#694
20050061506
2005-03-24

Well treatment system and method

#695
20050056423
2005-03-17

Methods of removing filter cake from well producing zones

#696
20050045329
2005-03-03

Intelligent well system and method

#697
20050039927
2005-02-24

Intelligent well system and method

#698
20050039917
2005-02-24

Isolation packer inflated by a fluid filtered from a gravel laden slurry

#699
20050034865
2005-02-17

Compositions and methods for degrading filter cake

#700
20050034861
2005-02-17

On-the fly coating of acid-releasing degradable material onto a particulate

#701
20050034859
2005-02-17

Vented gravel packing system and method of use

#702
20050028978
2005-02-10

Gravel packing method

#703
20050028976
2005-02-10

Compositions and methods for controlling the release of chemicals placed on particulates

#704
20050022991
2005-02-03

Particulates comprising silica and alumina, and methods of utilizing these particulates in subterranean applications

#705
20050016730
2005-01-27

Apparatus and method for monitoring a treatment process in a production interval

#706
20050006099
2005-01-13

Method for growth of a hydraulic fracture along a well bore annulus and creating a permeable well bore annulus

#707
20050006092
2005-01-13

Cross-over tool return port cover

#708
19256324
2026-03-24

Systems and methods for pipe conveyed gravel pack

#709
19074139
2026-05-19

High temperature gravel packing fluid system

#710
18937400
2026-05-05

Interval control valve with modular screens downhole in a wellbore

#711
18629458
2025-07-01

Divalent-brine-based high density drilling fluids

#712
14488097
2017-06-27

Safe, directional, drought-resistant dug well (SDDW)