ClassID:

135645

E21B43/25 - 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 Methods for stimulating production

Recent Application in this class:
#601
20140151049
2014-06-05

APPARATUS AND METHOD OF DELIVERING A FLUID USING DIRECT PROPPANT INJECTION

#602
20140144639
2014-05-29

Methods for hindering the settling of particulates in a subterranean formation

#603
20140144638
2014-05-29

Methods for Controlling Unconsolidated Particulates in a Subterranean Formation

#604
20140144618
2014-05-29

HYDRODYNAMIC PULSE TOOL

#605
20140138092
2014-05-22

Wellbore servicing methods and compositions comprising degradable polymers

#606
20140124199
2014-05-08

Tubular assembly and method of deploying a downhole device using a tubular assembly

#607
20140116731
2014-05-01

Method and apparatus for wellbore fluid treatment

#608
20140116708
2014-05-01

SYNERGISTIC CORROSION INHIBITOR INTENSIFIERS FOR ACIDIZING EMULSIONS

#609
20140116703
2014-05-01

Wellbore servicing methods and compositions comprising degradable polymers

#610
20140111518
2014-04-24

Methods and systems using a fluid treatment polar graph

#611
20140111349
2014-04-24

Methods and apparatus for evaluating downhole conditions with RFID MEMS sensors

#612
20140096969
2014-04-10

COMPOSITIONS AND METHODS FOR PREVENTING EMULSION FORMATION

#613
20140090851
2014-04-03

Casing valves system for selective well stimulation and control

#614
20140090839
2014-04-03

Enhanced oil recovery by in-situ steam generation

#615
20140069651
2014-03-13

Split stream oilfield pumping systems

#616
20140060800
2014-03-06

Enhancing well fluid recovery

#617
20140057356
2014-02-27

Estimating diffusion coefficient for a reservoir stimulation fluid

#618
20140034306
2014-02-06

ENHANCED OIL RECOVERY METHODS USING A FLUID CONTAINING A SACRIFICIAL AGENT

#619
20140027110
2014-01-30

Plasma source for generating nonlinear, wide-band, periodic, directed, elastic oscillations and a system and method for stimulating wells, deposits and boreholes using the plasma source

#620
20140020899
2014-01-23

Flooding operations employing chlorine dioxide

#621
20140014349
2014-01-16

Fracturing operations employing chlorine dioxide

#622
20140014344
2014-01-16

Method and system for servicing a wellbore

#623
20140014342
2014-01-16

Method of Treatment and Perforation of Near-Well Zone

#624
20140014324
2014-01-16

Method of recovering hydrocarbon resources while injecting a solvent and supplying radio frequency power and related apparatus

#625
20140000897
2014-01-02

Fracturing fluids and methods for treating hydrocarbon-bearing formations

#626
20140000889
2014-01-02

WIRELINE FLOW THROUGH REMEDIATION TOOL

#627
20130312970
2013-11-28

THICKENING OF FLUIDS

#628
20130306319
2013-11-21

Hydraulic pulse valve with improved pulse control

#629
20130290064
2013-10-31

Managing a workflow for an oilfield operation

#630
20130269950
2013-10-17

Method of simultaneously stimulating multiple zones of a formation using flow rate restrictors

#631
20130269938
2013-10-17

Well treatment apparatus, system, and method

#632
20130269932
2013-10-17

Methods for treating carbonate hydrocarbon-bearing formations with fluorinated amine oxides

#633
20130263932
2013-10-10

Modular fluid end for a multiplex plunger pump

#634
20130248174
2013-09-26

Autonomous downhole conveyance system

#635
20130233557
2013-09-12

Bottomhole assembly for capillary injection system and method

#636
20130228335
2013-09-05

Methods, Systems, and Compositions for the Controlled Crosslinking of Well Servicing Fluids

#637
20130213650
2013-08-22

Optimized chemical enhanced recovery method

#638
20130213647
2013-08-22

Surface wellbore operating equipment utilizing MEMS sensors

#639
20130192846
2013-08-01

Resettable ball seat

#640
20130186629
2013-07-25

Asphaltene inhibitors for squeeze applications

#641
20130180721
2013-07-18

Downhole Fluid Treatment Tool

#642
20130168090
2013-07-04

Apparatus and method for fluid treatment of a well

#643
20130126159
2013-05-23

METHOD AND COMPOSITION FOR CEMENTING A CASING IN A WELLBORE

#644
20130118739
2013-05-16

Real time downhole sensor data for controlling surface stimulation equipment

#645
20130112427
2013-05-09

Split ring shift control for hydraulic pulse valve

#646
20130105159
2013-05-02

Methods for stimulating multi-zone wells

#647
20130098619
2013-04-25

Split stream oilfield pumping systems

#648
20130068462
2013-03-21

Increased resource recovery by inorganic and organic reactions and subsequent physical actions that modify properties of the subterranean formation which reduces produced water waste and increases resource utilization via stimulation of biogenic methane generation

#649
20130068451
2013-03-21

Tools and methods for use in completion of a wellbore

#650
20130062068
2013-03-14

Use of sensors coated with elastomer for subterranean operations

#651
20130048288
2013-02-28

Working/control fluid for heavy and extra-heavy crude wells

#652
20130032344
2013-02-07

Methods for monitoring fluids within or produced from a subterranean formation using opticoanalytical devices

#653
20130032339
2013-02-07

Methods for fluid monitoring in a subterranean formation using one or more integrated computational elements

#654
20130032338
2013-02-07

Methods for Fluid Monitoring in a Subterranean Formation Using One or More Integrated Computational Elements

#655
20130025853
2013-01-31

Single-well diagnostics and increased oil recovery by oil injection and sequential waterflooding

#656
20130020085
2013-01-24

SURFACTANT SYSTEM TO INCREASE HYDROCARBON RECOVERY

#657
20130014952
2013-01-17

TREATMENT OF HYDROCARBON CONTAINING RESERVOIRS WITH ELECTROLYZED WATER

#658
20130008645
2013-01-10

Intelligent well system and method

#659
20120325751
2012-12-27

Flowback separation system

#660
20120325471
2012-12-27

ENCAPSULATED MATERIALS AND THEIR USE IN OIL AND GAS WELLS

#661
20120325461
2012-12-27

Recompaction of Sand Reservoirs

#662
20120261129
2012-10-18

Electromagnetic wave treatment method and promoter

#663
20120256634
2012-10-11

Electrode system and sensor for an electrically enhanced underground process

#664
20120227839
2012-09-13

Check valve assembly for well stimulation operations

#665
20120205120
2012-08-16

Method for individually servicing a plurality of zones of a subterranean formation

#666
20120205097
2012-08-16

Method of Enhance the Production Capacity of an Oil Well

#667
20120203507
2012-08-09

System and method for tracking wellsite equipment maintenance data

#668
20120186802
2012-07-26

Well treatment device, method, and system

#669
20120185225
2012-07-19

System and method for performing downhole stimulation operations

#670
20120179444
2012-07-12

System and method for performing downhole stimulation operations

#671
20120168163
2012-07-05

Method and apparatus for completing a multi-stage well

#672
20120152535
2012-06-21

Formulation and method of use for stimulation of heavy and extraheavy oil wells

#673
20120132289
2012-05-31

Hydraulic pulse valve with improved pulse control

#674
20120115759
2012-05-10

Treatment fluids containing a boron trifluoride complex and methods for use thereof

#675
20120111566
2012-05-10

Apparatus and method for stimulating subterranean formations

#676
20120090847
2012-04-19

Tools and methods for use in completion of a wellbore

#677
20120067576
2012-03-22

Treatment fluids containing a biodegradable chelating agent and methods for use thereof

#678
20120063936
2012-03-15

Compression clamp for a modular fluid end for a multiplex plunger pump

#679
20120061089
2012-03-15

Apparatus and device for delivering fluid downhole and increasing well production

#680
20120006556
2012-01-12

System and method of providing high pressure fluid injection with metering using low pressure supply lines

#681
20120006550
2012-01-12

Split stream oilfield pumping systems

#682
20110315375
2011-12-29

System and method for determining downhole fluid parameters

#683
20110308802
2011-12-22

DEGRADABLE MATERIAL FOR DIFFERENT OILFIELD APPLICATIONS

#684
20110290486
2011-12-01

Well treatment device, method, and system

#685
20110287985
2011-11-24

Methods and systems for treating subterranean wells

#686
20110284227
2011-11-24

Formation treatment evaluation

#687
20110284215
2011-11-24

Biogenic fuel gas generation in geologic hydrocarbon deposits

#688
20110278010
2011-11-17

Method and apparatus for wellbore fluid treatment

#689
20110272325
2011-11-10

Formulations and methods for removing hydrocarbons from surfaces

#690
20110272155
2011-11-10

System and method for fluid treatment

#691
20110253383
2011-10-20

System and method for servicing a wellbore

#692
20110199228
2011-08-18

Use of micro-electro-mechanical systems (MEMS) in well treatments

#693
20110198091
2011-08-18

Solvent separation in a solvent-dominated recovery process

#694
20110192598
2011-08-11

Use of micro-electro-mechanical systems (MEMS) in well treatments

#695
20110192597
2011-08-11

Use of micro-electro-mechanical systems (MEMS) in well treatments

#696
20110192594
2011-08-11

Use of micro-electro-mechanical systems (MEMS) in well treatments

#697
20110192593
2011-08-11

Use of micro-electro-mechanical systems (MEMS) in well treatments

#698
20110192592
2011-08-11

Use of micro-electro-mechanical systems (MEMS) in well treatments

#699
20110186298
2011-08-04

Method and system for treating a subterranean formation using diversion

#700
20110186290
2011-08-04

Use of micro-electro-mechanical systems (MEMS) in well treatments

#701
20110177983
2011-07-21

Cationic fluorinated polymer compositions and methods for treating hydrocarbon-bearing formations using the same

#702
20110162843
2011-07-07

Process and apparatus to improve reliability of pinpoint stimulation operations

#703
20110155380
2011-06-30

Hydrostatic flapper stimulation valve and method

#704
20110146974
2011-06-23

Delivery of nanodispersions below ground

#705
20110132617
2011-06-09

SYSTEMS AND METHODS FOR PRODUCING OIL AND/OR GAS

#706
20110127047
2011-06-02

Method and apparatus for wellbore fluid treatment

#707
20110118153
2011-05-19

Method of continuous dissolution of polyacrylamide emulsions for enhanced oil recovery (EOR)

#708
20110108271
2011-05-12

ENHANCING HYDROCARBON RECOVERY

#709
20110079392
2011-04-07

Additives to suppress silica scale build-up and methods of use thereof

#710
20110073301
2011-03-31

Well jet device for logging and developing horizontal wells with abnormally low formation pressure

#711
20110067885
2011-03-24

Split stream oilfield pumping systems

#712
20110061875
2011-03-17

Operation of casing valves system for selective well stimulation and control

#713
20110056694
2011-03-10

Methods For Removing Paraffinic Hydrocarbon Or Bitumen In Oil Producing Or Disposal Wells

#714
20110048724
2011-03-03

System for pulse-injecting fluid into a borehole

#715
20110042090
2011-02-24

Composite micro-coil for downhole chemical delivery

#716
20110036590
2011-02-17

System and method for servicing a wellbore

#717
20110030947
2011-02-10

Stimulating subterranean zones

#718
20110024130
2011-02-03

Plunger lift with chemical injection

#719
20100323931
2010-12-23

STABILISED EMULSIONS

#720
20100314108
2010-12-16

Dual-function nano-sized particles

#721
20100300680
2010-12-02

Biogenic fuel gas generation in geologic hydrocarbon deposits

#722
20100288499
2010-11-18

Composition and method for stimulation of oil production in sandstone formations

#723
20100286918
2010-11-11

Apparatus and method for predicting properties of earth formations

#724
20100270019
2010-10-28

METHOD OF OBTAINING A TREATMENT COMPOSITION FOR IMPROVING THE PRODUCTIVITY OF HYDROCARBON PRODUCING WELLS

#725
20100206560
2010-08-19

Automated closed loop flowback and separation system

#726
20100200224
2010-08-12

Hydrocarbons production installation and method

#727
20100186966
2010-07-29

Method of improving performance and efficiency of wellbore pump for hydrocarbon production

#728
20100101788
2010-04-29

Multi-point chemical injection system

#729
20100101785
2010-04-29

Hydraulic System and Method of Monitoring

#730
20100101782
2010-04-29

Biogenic fuel gas generation in geologic hydrocarbon deposits

#731
20100096128
2010-04-22

ENHANCING HYDROCARBON RECOVERY

#732
20100096127
2010-04-22

Flow regulator assembly

#733
20100089462
2010-04-15

Automated flowback and information system

#734
20100084137
2010-04-08

Methods and Equipment to Improve Reliability of Pinpoint Stimulation Operations

#735
20100065276
2010-03-18

Method and apparatus for wellbore fluid treatment

#736
20100051266
2010-03-04

Use of micro-electro-mechanical systems MEMS in well treatments

#737
20100048429
2010-02-25

Methods, systems, and compositions for the controlled crosslinking of well servicing fluids

#738
20090294122
2009-12-03

Flow simulation in a well or pipe

#739
20090283280
2009-11-19

Hydraulic open hole packer

#740
20090281006
2009-11-12

Methods of treating a lower-quality water for use as some of the water in the forming and delivering of a treatment fluid into a wellbore

#741
20090260817
2009-10-22

Method and apparatus to cement a perforated casing

#742
20090223669
2009-09-10

Method and a device for solvent injection in a subsurface well

#743
20090218097
2009-09-03

Wellbore intervention tool

#744
20090188665
2009-07-30

Monitoring of downhole parameters and tools utilizing fiber optics

#745
20090143259
2009-06-04

Particles

#746
20090120633
2009-05-14

Method for Stimulating a Well Using Fluid Pressure Waves

#747
20090114392
2009-05-07

Method and apparatus associated with stimulation treatments for wells

#748
20090114388
2009-05-07

Equalizing injection tool

#749
20090107665
2009-04-30

Methods and apparatus for injecting fluids at a subterranean location in a well

#750
20090095482
2009-04-16

Method and system for centralized well treatment

#751
20090090507
2009-04-09

Wellbore and reservoir treatment device and method

#752
20090071646
2009-03-19

Apparatus for treating fluid streams cross-reference to related applications

#753
20090065206
2009-03-12

Wellbore fluid treatment tubular and method

#754
20090065197
2009-03-12

Enhancing well fluid recovery

#755
20090056941
2009-03-05

Methods for producing oil and/or gas

#756
20090014168
2009-01-15

Casing valves system for selective well stimulation and control

#757
20090008083
2009-01-08

Method and apparatus for wellbore fluid treatment

#758
20080314600
2008-12-25

Well treatment device, method and system

#759
20080314596
2008-12-25

APPARATUS AND METHOD FOR WELLBORE ISOLATION

#760
20080308272
2008-12-18

Real Time Closed Loop Interpretation of Tubing Treatment Systems and Methods

#761
20080299635
2008-12-04

Biogenic fuel gas generation in geologic hydrocarbon deposits

#762
20080289816
2008-11-27

Biogenic fuel gas generation in geologic hydrocarbon deposits

#763
20080277110
2008-11-13

Hydraulic open hole packer

#764
20080264636
2008-10-30

Method and apparatus for hydraulic treatment of a wellbore

#765
20080230231
2008-09-25

Downhole safety valve apparatus and method

#766
20080190618
2008-08-14

Method of Blending Hazardous Chemicals to a Well Bore

#767
20080185149
2008-08-07

SYSTEM AND METHOD FOR ENHANCING PERMEABILITY OF A SUBTERRANEAN ZONE AT A HORIZONTAL WELL BORE

#768
20080169106
2008-07-17

Method and apparatus for fluid bypass of a well tool

#769
20080164035
2008-07-10

Downhole safety valve apparatus and method

#770
20080142225
2008-06-19

Chemical deployment canisters for downhole use

#771
20080110622
2008-05-15

Methods of isolating hydrajet stimulated zones

#772
20080099206
2008-05-01

Methods and apparatus for injecting fluids at a subterranean location in a well

#773
20080066919
2008-03-20

Apparatus and method for increasing well production

#774
20080066915
2008-03-20

Integrated well access assembly and method

#775
20080066537
2008-03-20

Systems and methods for downhole fluid compatibility

#776
20080047706
2008-02-28

Method of obtaining a treatment composition for improving the productivity of hydrocarbon producing wells

#777
20080029268
2008-02-07

Flow diverter

#778
20080029267
2008-02-07

HORIZONTAL OILFIELD PUMPING SYSTEMS

#779
20080023203
2008-01-31

Apparatus and method for delivering chemicals into an underground well

#780
20080015832
2008-01-17

Method for predicting acid placement in carbonate reservoirs

#781
20080015831
2008-01-17

Flow of self-diverting acids in carbonate reservoirs

#782
20080000639
2008-01-03

Method and system for treating a subterranean formation using diversion

#783
20070277982
2007-12-06

Method of pumping an oilfield fluid and split stream oilfield pumping systems

#784
20070259183
2007-11-08

Magnetostrictive porous media vibrational source

#785
20070251691
2007-11-01

Solid state pump

#786
20070244681
2007-10-18

Method for large-scale modelling and simulation of carbonate wells stimulation

#787
20070227722
2007-10-04

Automated flowback and information system

#788
20070187095
2007-08-16

Single trip horizontal gravel pack and stimulation system and method

#789
20070151734
2007-07-05

Method and apparatus for wellbore fluid treatment

#790
20070137860
2007-06-21

System and method for treatment of a well

#791
20070125543
2007-06-07

Method and apparatus for centralized well treatment

#792
20070111898
2007-05-17

Methods and compositions for treating subterranean zones

#793
20070095528
2007-05-03

Method of monitoring fluid placement during stimulation treatments

#794
20070056729
2007-03-15

Apparatus for treating fluid streams

#795
20070039739
2007-02-22

Well chemical treatment utilizing plunger lift delivery system with chemically improved plunger seal

#796
20070029085
2007-02-08

Prevention of Water and Condensate Blocks in Wells

#797
20070007007
2007-01-11

Method and apparatus for wellbore fluid treatment

#798
20070007004
2007-01-11

Composition and method to enhance recovery from oil wells

#799
20060272809
2006-12-07

Wellbores utilizing fiber optic-based sensors and operating devices

#800
20060254765
2006-11-16

Biogenic fuel gas generation in geologic hydrocarbon deposits

#801
20060231256
2006-10-19

Chemical injection well completion apparatus and method

#802
20060231253
2006-10-19

Horizontal single trip system with rotating jetting tool

#803
20060201715
2006-09-14

Drilling normally to sub-normally pressured formations

#804
20060184346
2006-08-17

Modeling, simulation and comparison of models for wormhole formation during matrix stimulation of carbonates

#805
20060162927
2006-07-27

Single trip horizontal gravel pack and stimulation system and method

#806
20060131025
2006-06-22

Method and system for producing a reservoir through a boundary layer

#807
20060131022
2006-06-22

Matrix treatment of damaged sandstone formations using buffered HF-acidizing solutions

#808
20060124309
2006-06-15

Methods of controlling sand and water production in subterranean zones

#809
20060118301
2006-06-08

Methods of stimulating a subterranean formation comprising multiple production intervals

#810
20060090906
2006-05-04

Apparatus and method for wellbore isolation

#811
20060076139
2006-04-13

Apparatus and method for increasing well production using surfactant injection

#812
20060070737
2006-04-06

Method of increasing the well rate of exploitation and recharge wells

#813
20060060356
2006-03-23

Production of free gas by gas hydrate conversion

#814
20060048942
2006-03-09

Flow control device for an injection pipe string

#815
20060037755
2006-02-23

Solid state pump

#816
20060021750
2006-02-02

Method and system for injecting a treatment fluid into a well

#817
20060000610
2006-01-05

Methods of fracturing sensitive formations

#818
20050230107
2005-10-20

Methods of well stimulation during drilling operations

#819
20050211439
2005-09-29

Methods of isolating hydrajet stimulated zones

#820
20050183859
2005-08-25

System and method for enhancing permeability of a subterranean zone at a horizontal well bore

#821
20050178552
2005-08-18

Method and apparatus for wellbore fluid treatment

#822
20050166961
2005-08-04

Closed loop additive injection and monitoring system for oilfield operations

#823
20050155764
2005-07-21

System and method for treating wells

#824
20050150658
2005-07-14

Method and apparatus for enhancing oil and gas flow in a well

#825
20050092498
2005-05-05

Methods for increasing production from a wellbore

#826
20050061510
2005-03-24

Method for enhancing gas well secondary recovery operations

#827
20050061504
2005-03-24

Methods and compositions for treating subterranean zones

#828
20050045329
2005-03-03

Intelligent well system and method

#829
20050039927
2005-02-24

Intelligent well system and method

#830
20050028975
2005-02-10

Method of stimulating long horizontal wells to improve well productivity

#831
20050022994
2005-02-03

Well chemical treatment utilizing plunger lift delivery system

#832
20050012036
2005-01-20

Providing a light cell in a wellbore

#833
20050000689
2005-01-06

Method for conditioning wellbore fluids and sucker rod therefore

#834
19010776
2026-03-03

Adaptive multi-agent architecture for petrophysical data management and processing

#835
18323609
2024-07-16

Sleeve for multi-stage wellbore stimulation

#836
17708672
2023-07-25

Superheated phase changing nanodroplets for hydrocarbon reservoir applications

#837
17111649
2022-05-03

Hydrolysis reactant fluids for pulse power drilling

#838
15607640
2018-05-22

System and related methods for fracking and completing a well which flowably installs sand screens for sand control

#839
14602364
2015-10-27

Tunable down-hole stimulation array

#840
14459042
2015-06-23

Wellbore plug isolation system and method

#841
14396215
2015-06-09

Treatment fluids containing a perfluorinated carboxylic acid for use in subterranean formation operations

#842
14284423
2015-12-15

Methods for using improved urea hydrochloride compositions

#843
14284421
2015-06-02

Methods for using improved urea hydrochloride compositions

#844
14256788
2016-01-12

Pressurized injection apparatus for downhole treatment pellets

#845
14229362
2014-10-21

Linearly indexing well bore tool

#846
12823000
2015-06-09

Selective removal of silica from silica containing brines