ClassID:

135386

E21B21/062 - page 2 - CPC Classification

Classification description:

Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor; Arrangements for treating drilling fluids outside the borehole by mixing components

Recent Application in this class:
#301
20150345269
2015-12-03

Process for continuously supplying a fracturing fluid

#302
20150345258
2015-12-03

Modular assembly for processing a flowback composition stream and methods of processing the same

#303
20150344765
2015-12-03

CLAY-SWELLING INHIBITOR, COMPOSITIONS COMPRISING SAID INHIBITOR AND PROCESSES USING SAID INHIBITOR

#304
20150336030
2015-11-26

Process and apparatus for treating drilling fluid

#305
20150329762
2015-11-19

Use of nanoparticles as a lubricity additive in well fluids

#306
20150322761
2015-11-12

Apparatus and method for servicing a well

#307
20150307164
2015-10-29

Recessed barge design

#308
20150252649
2015-09-10

Diverting resin for stabilizing particulate in a well

#309
20150192006
2015-07-09

System and method for preparing a treatment fluid

#310
20150166866
2015-06-18

Dissipative surfactant aqueous-based drilling system for use in hydrocarbon recovery operations from heavy oil and tar sands

#311
20150075869
2015-03-19

CONTINUOUS GRAVITY FEED SYSTEM FOR FEEDING ADDITIVES TO A DRILLING MUD SYSTEM

#312
20150075796
2015-03-19

Wellsite handling system for packaged wellsite materials and method of using same

#313
20150060066
2015-03-05

Method of preparing polymer-water emulsion and further settling a sticky polymer material in downhole environment

#314
20150055432
2015-02-26

Polymer blending system

#315
20140371113
2014-12-18

Drilling fluid processing

#316
20140328137
2014-11-06

MIXING METHODS AND SYSTEMS FOR FLUIDS

#317
20140318810
2014-10-30

Manipulatable filter system

#318
20140224493
2014-08-14

Distributing a wellbore fluid through a wellbore

#319
20140202702
2014-07-24

In-line, high pressure well fluid injection blending

#320
20140185406
2014-07-03

Process for mixing wellbore fluids

#321
20140151051
2014-06-05

COfracturing system and method of use

#322
20140151050
2014-06-05

Injection system for enhanced oil recovery

#323
20140138089
2014-05-22

System and method for producing high pressure foam slurry

#324
20140076569
2014-03-20

Proppant mixing and metering system

#325
20140069650
2014-03-13

Method and apparatus for centrifugal blending system

#326
20140060842
2014-03-06

Electrostatic particulate coating methods and apparatus for fracturing fluids

#327
20140054042
2014-02-27

Centre for the preparation of additives for hydraulic fracturing operations and hydraulic fracturing process employing the preparation centre

#328
20140053637
2014-02-27

Device for measuring and controlling on-line viscosity at high pressure

#329
20140048138
2014-02-20

System, apparatus, and methods for disposal of fluid wastes

#330
20140041874
2014-02-13

Wellbore Servicing System and Methods of Use

#331
20140026824
2014-01-30

METHOD AND APPARATUS FOR PROVIDING HEATED WATER FOR FRACING

#332
20140008074
2014-01-09

Fracturing system and method for an underground formation

#333
20140000899
2014-01-02

Fracturing system and method for an underground formation using natural gas and an inert purging fluid

#334
20140000720
2014-01-02

Apparatus and method of delivering a fluid using a non-mechanical eductor pump and lock hopper

#335
20130341010
2013-12-26

Method for fracturing a formation using a fracturing fluid mixture

#336
20130308414
2013-11-21

Automatic flow control in mixing fracturing gel

#337
20130292122
2013-11-07

Polymer dissolution equipment suitable for large fracturing operations

#338
20130240210
2013-09-19

Systems and methods for injecting a particulate mixture

#339
20130233510
2013-09-12

LIQUID HEATING SYSTEM

#340
20130225457
2013-08-29

Drilling fluid and method for drilling in coal-containing formations

#341
20130206479
2013-08-15

Drilling fluid and method for drilling in coal-containing formations

#342
20130112419
2013-05-09

Process and process line for the preparation of hydraulic fracturing fluid

#343
20130105166
2013-05-02

Methods for providing proppant slugs in fracturing treatments

#344
20130105164
2013-05-02

High energy in-line hydraulic shearing unit for oilfield drilling fluids

#345
20130092377
2013-04-18

Use of a chopper mechanism to add fibers to a well

#346
20130056214
2013-03-07

REDUCING SULFIDE IN PRODUCTION FLUIDS DURING OIL RECOVERY

#347
20130048276
2013-02-28

FRAC WATER BLENDING SYSTEM

#348
20120272838
2012-11-01

Metering process and device for performing the process

#349
20120247778
2012-10-04

Completion fluid with friction reduction

#350
20120231982
2012-09-13

Well treatment methods and systems

#351
20120202921
2012-08-09

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

#352
20120202719
2012-08-09

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

#353
20120199356
2012-08-09

Equipment for quick dispersion of polyacrylamide powder for fracturing operations

#354
20120181030
2012-07-19

Goat head type injection block for fracturing trees in oilfield applications

#355
20120170402
2012-07-05

Metering apparatus and method for introducing a powdery medium into a fluid

#356
20120127822
2012-05-24

Polymer blending system

#357
20120125615
2012-05-24

Mixing tank and method of use

#358
20120073818
2012-03-29

Mixing tank and method of use

#359
20120061086
2012-03-15

Method of preparing polymer-water emulsion and further settling a sticky polymer material in downhole environment

#360
20120060929
2012-03-15

Systems and methods for routing pressurized fluid

#361
20120031619
2012-02-09

System and method for producing high pressure foam slurry

#362
20110299357
2011-12-08

Mixing apparatus and method of using same

#363
20110290492
2011-12-01

Blending system and method for preparing emulsions

#364
20110284220
2011-11-24

On-the-fly acid blender with sampling equipment

#365
20110235460
2011-09-29

METHOD AND APPARATUS TO OPTIMIZE THE MIXING PROCESS

#366
20110232909
2011-09-29

Methods and apparatuses for mixing drilling fluids

#367
20110232904
2011-09-29

Method and composition for oil enhanced recovery

#368
20110226480
2011-09-22

Process for reducing the pressure for injecting a polymer solution into an oil well without shear on said solution

#369
20110220354
2011-09-15

Polymer gels as flow improvers in water injection systems

#370
20110118153
2011-05-19

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

#371
20110105367
2011-05-05

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

#372
20110063942
2011-03-17

Methods and systems for integral blending and storage of materials

#373
20110061855
2011-03-17

Electric or natural gas fired small footprint fracturing fluid blending and pumping equipment

#374
20110048695
2011-03-03

MANIFOLD AND SYSTEM FOR SERVICING MULTIPLE WELLS

#375
20100329072
2010-12-30

Methods and Systems for Integrated Material Processing

#376
20100319921
2010-12-23

Wellbore fluid mixing system

#377
20100319916
2010-12-23

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

#378
20100296359
2010-11-25

System and method for facilitating well servicing operations

#379
20100270221
2010-10-28

PORTABLE POLYMER HYDRATION - CONDITIONING SYSTEM

#380
20100254214
2010-10-07

Methods and Systems for Slurry Blending

#381
20100246318
2010-09-30

Dry polymer hydration apparatus and methods of use

#382
20100243657
2010-09-30

Well fluid additive systems, well fluids therefrom, and methods of making using such systems

#383
20100243329
2010-09-30

Vacuum feed supply system for drilling fluid additives

#384
20100243255
2010-09-30

Method for oilfield material delivery

#385
20100188926
2010-07-29

Centrifugal mixing system

#386
20100172202
2010-07-08

Mixer system controlled based on density inferred from sensed mixing tub weight

#387
20100157722
2010-06-24

Means and method for mixing a particulate material and a liquid

#388
20100132949
2010-06-03

Process and process line for the preparation of hydraulic fracturing fluid

#389
20100116553
2010-05-13

System for managing variable density drilling mud

#390
20100089650
2010-04-15

Drilling fluid and method for drilling in coal-containing formations

#391
20100038077
2010-02-18

Method for Centralized Proppant Storage and Metering

#392
20100027371
2010-02-04

Closed Blending System

#393
20100025041
2010-02-04

Portable well treating fluid mixing system and method

#394
20090308602
2009-12-17

Combined three-in-one fracturing system

#395
20090305044
2009-12-10

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

#396
20090286698
2009-11-19

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

#397
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

#398
20090277641
2009-11-12

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

#399
20090277638
2009-11-12

Methods of pumping fluids having different concentrations of particulate at different average bulk fluid velocities to reduce pump wear and maintenance in the forming and delivering of a treatment fluid into a wellbore

#400
20090277634
2009-11-12

Methods of pumping fluids having different concentrations of particulate with different concentrations of hydratable additive to reduce pump wear and maintenance in the forming and delivering of a treatment fluid into a wellbore

#401
20090242201
2009-10-01

SYSTEM AND METHOD FOR POLYMER DISTRIBUTION TO WELL SITES

#402
20090229825
2009-09-17

Treatment of stimulating fluid

#403
20090223664
2009-09-10

On-the-Fly Acid Blender with Sampling Equipment

#404
20090202311
2009-08-13

METHODS AND SYSTEMS FOR DELIVERING LOST CIRCULATION MATERIAL INTO DRILLING PITS

#405
20090194331
2009-08-06

Vacuum feed supply system for drilling fluid additives

#406
20090120635
2009-05-14

Apparatus and method for maintaining boost pressure to high-pressure pumps during wellbore servicing operations

#407
20090107728
2009-04-30

Drilling fluid recovery

#408
20090095483
2009-04-16

Installation for enhanced oil recovery using water-soluble polymers and method of implementing

#409
20090095481
2009-04-16

Installation for enhanced oil recovery using water soluble polymers, method for implementing same

#410
20090073800
2009-03-19

Apparatus and Method for Mixing Fluids at the Surface for Subterranean Treatments

#411
20090050374
2009-02-26

Method and apparatus for managing variable density drilling mud

#412
20080277121
2008-11-13

Dust control system for transferring dry material used in subterranean wells

#413
20080264641
2008-10-30

Blending Fracturing Gel

#414
20080245527
2008-10-09

Use of a chopper mechanism to add fibers to a well

#415
20080236896
2008-10-02

APPARATUS AND METHOD FOR RECOVERING OIL-BASED DRILLING MUD

#416
20080236895
2008-10-02

APPARATUS AND METHOD FOR RECOVERING OIL-BASED DRILLING MUD

#417
20080212397
2008-09-04

Method and Apparatus to Optimize the Mixing Process

#418
20080190618
2008-08-14

Method of Blending Hazardous Chemicals to a Well Bore

#419
20080165613
2008-07-10

Systems for self-balancing control of mixing and pumping

#420
20080165612
2008-07-10

Methods for self-balancing control of mixing and pumping

#421
20080164023
2008-07-10

Method for servicing a well bore using a mixing control system

#422
20080147367
2008-06-19

Methods for using high-yielding non-Newtonian fluids for severe lost circulation prevention

#423
20080069647
2008-03-20

Methods and systems for delivering lost circulation material into drilling pits

#424
20080049544
2008-02-28

Process for mixing wellbore fluids

#425
20080041449
2008-02-21

Continuous mixing system

#426
20080013401
2008-01-17

Apparatus and method for mixing fluids at the surface for subterranean treatments

#427
20070201305
2007-08-30

Method and apparatus for centralized proppant storage and metering

#428
20070137862
2007-06-21

Centrifugal blending system

#429
20070087927
2007-04-19

Centrifuge control in response to viscosity and density parameters of drilling fluid

#430
20070084639
2007-04-19

Systems for centrifuge control in response to viscosity and density parameters of drilling fluids

#431
20070081866
2007-04-12

Methods and systems for delivering lost circulation material into drilling pits

#432
20070066491
2007-03-22

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

#433
20060231259
2006-10-19

Method for servicing a well bore using a mixing control system

#434
20060225925
2006-10-12

Apparatus and method for recovering oil-based drilling mud

#435
20060225924
2006-10-12

Apparatus and method for recovering oil-based drilling mud

#436
20060221762
2006-10-05

Fluid mixing system

#437
20060188651
2006-08-24

Additive for increasing the density of a fluid for casing annulus pressure

#438
20060144136
2006-07-06

Determination of amount of proppant added to a fracture fluid using a coriolis flow meter

#439
20060107998
2006-05-25

Dry polymer hydration apparatus and methods of use

#440
20060042836
2006-03-02

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

#441
20060019812
2006-01-26

Drilling fluid conditioning tank and centrifuge combination

#442
19367640
2026-05-26

Method of drilling wellbore into subterranean geological formation

#443
19065288
2026-03-24

Hydrating dry friction reducer in a fluid stream for hydraulic fracturing

#444
18951901
2025-04-08

High density environmentally friendly polymer water-based drilling fluid with resistance to 240° C. and saturated salts, preparation method therefor and use thereof

#445
18907261
2025-06-10

Biomass slurry preparation for subterranean injection

#446
18811351
2026-02-24

Method of preparing drilling mud through integrating ultrasonic mixing and venturi technology

#447
18750211
2025-01-14

Grouting and water blocking method for directional hole with large offset in hard rock stratum

#448
18622674
2025-09-30

Method of removing hydrogen sulfide from a subterranean geological formation with a zeolitic imidazolate framework in waste cooking oil-based drilling fluids

#449
18594829
2026-04-07

Situ treatment analysis mixing system

#450
18101460
2024-03-19

Curing lost circulation of oil-based drilling muds

#451
17986585
2023-08-01

Mobile robots for managing drilling operations

#452
17977470
2023-10-24

Sustainable solid lubricant for drilling fluid

#453
17682047
2024-03-05

Situ treatment analysis mixing system

#454
17303146
2021-12-07

Methods, systems, and devices to enhance fracturing fluid delivery to subsurface formations during high-pressure fracturing operations

#455
17035600
2025-11-25

Water usage monitor and tracking

#456
16943434
2022-01-04

Epoxidized alpha olefin based lubricant for water-based drilling fluids

#457
16832856
2020-12-15

Hydraulic fracturing system for driving a plunger pump with a turbine engine

#458
16682966
2021-01-12

Composition and method of manufacturing of whole date palm seed lost circulation material (LCM)

#459
16599308
2020-09-29

Graphene oxide coated membranes to increase the density of water base fluids

#460
16283901
2022-03-01

In situ treatment analysis mixing system

#461
15795792
2018-03-27

Deep-well polysulfonate drilling fluid and preparation method thereof

#462
15692879
2017-11-07

Correlating energy to mix cement slurry under different mixing conditions

#463
15239762
2020-03-31

Combination unit for managing fluids

#464
14101332
2016-09-20

Combination unit for managing fluid