ClassID:

135565

E21B41/0035 - page 2 - CPC Classification

Classification description:

Equipment or details not covered by groups  -  Apparatus or methods for multilateral well technology, e.g. for the completion of or workover on wells with one or more lateral branches

Recent Application in this class:
#301
20130240215
2013-09-19

Downhole multiple well

#302
20130192840
2013-08-01

Multilateral location and orientation assembly

#303
20130175047
2013-07-11

Variably configurable wellbore junction assembly

#304
20130132049
2013-05-23

Coupled pipe network—reservoir modeling for multi-branch oil wells

#305
20130126165
2013-05-23

Wellbore lateral liner placement system

#306
20130087325
2013-04-11

Method for real-time monitoring and transmitting hydraulic fracture seismic events to surface using the pilot hole of the treatment well as the monitoring well

#307
20130087321
2013-04-11

System for real-time monitoring and transmitting hydraulic fracture seismic events to surface using the pilot hole of the treatment well as the monitoring well

#308
20130081807
2013-04-04

Providing equipment in lateral branches of a well

#309
20130068473
2013-03-21

Pressure controlled well construction and operation systems and methods usable for hydrocarbon operations, storage and solution mining

#310
20130068453
2013-03-21

Dual purpose observation and production well

#311
20130020088
2013-01-24

Chemically targeted control of downhole flow control devices

#312
20130014957
2013-01-17

Downhole guiding tool

#313
20120318582
2012-12-20

Multilateral system with rapidtrip intervention sleeve and technique for use in a well

#314
20120318531
2012-12-20

Pressure pulse driven friction reduction

#315
20120305268
2012-12-06

Completion of lateral bore with high pressure multibore junction assembly

#316
20120305267
2012-12-06

Wellbore junction completion with fluid loss control

#317
20120305266
2012-12-06

Variably configurable wellbore junction assembly

#318
20120298362
2012-11-29

Window joint for lateral wellbore construction and method for opening same

#319
20120267171
2012-10-25

Well system with lateral main bore and strategically disposed lateral bores and method of forming

#320
20120261130
2012-10-18

Method and apparatus for multilateral construction and intervention of a well

#321
20120217068
2012-08-30

Lateral well drilling apparatus and method

#322
20120211242
2012-08-23

Multi-stage valve actuator

#323
20120175112
2012-07-12

GRAVEL PACKING IN LATERAL WELLBORE

#324
20120138301
2012-06-07

Controllably installed multilateral completions assembly

#325
20120132424
2012-05-31

METHOD OF DRILLING FROM A SHAFT FOR UNDERGROUND RECOVERY OF HYDROCARBONS

#326
20120111636
2012-05-10

Combination whipstock and completion deflector

#327
20120103687
2012-05-03

Redundant position reference system for multilateral exit construction and method for use of same

#328
20120095603
2012-04-19

Lift-gas optimization with choke control

#329
20120061141
2012-03-15

METHOD FOR FINDING AND RE-ENTERING A LATERAL BORE IN A MULTI-LATERAL WELL

#330
20120043135
2012-02-23

Method of forming a bore

#331
20120013482
2012-01-19

Aligning inductive couplers in a well

#332
20110290505
2011-12-01

Drilling and completion deflector and method of using

#333
20110278070
2011-11-17

System and method for drilling lateral boreholes

#334
20110232063
2011-09-29

Diverting system and method of running a tubular

#335
20110226467
2011-09-22

Well assembly with a composite fiber sleeve for an opening

#336
20110192596
2011-08-11

THROUGH TUBING INTELLIGENT COMPLETION SYSTEM AND METHOD WITH CONNECTION

#337
20110139457
2011-06-16

System and method for lateral wellbore entry, debris removal, and wellbore cleaning

#338
20110114320
2011-05-19

Structurally stand-alone FRAC liner system and method of use thereof

#339
20110100620
2011-05-05

Active integrated well completion method and system

#340
20110079437
2011-04-07

System and method for drilling and completing lateral boreholes

#341
20110079397
2011-04-07

Jet-drilling and completion process

#342
20110067859
2011-03-24

Method and apparatus for determining locations of multiple casings within a wellbore conductor

#343
20110061937
2011-03-17

Well construction using small laterals

#344
20110048732
2011-03-03

System and method for controlling the flow of fluid in branched wells

#345
20110029289
2011-02-03

Robotic exploration of unknown surfaces

#346
20110024121
2011-02-03

Method and apparatus for multilateral multistage stimulation of a well

#347
20110011580
2011-01-20

Wireless transfer of power and data between a mother wellbore and a lateral wellbore

#348
20100319928
2010-12-23

THROUGH TUBING INTELLIGENT COMPLETION AND METHOD

#349
20100314109
2010-12-16

Gravel pack completions in lateral wellbores of oil and gas wells

#350
20100314106
2010-12-16

LOW COST RIGLESS INTERVENTION AND PRODUCTION SYSTEM

#351
20100307770
2010-12-09

CONTAMINANT EXCLUDING JUNCTION AND METHOD

#352
20100307736
2010-12-09

Permanent bypass whipstock assembly for drilling and completing a sidetrack well and preserving access to the original wellbore

#353
20100294569
2010-11-25

METHODS FOR CUTTINGS FOR A WIRELINE DRILLING TOOL

#354
20100294480
2010-11-25

Sensor deployment

#355
20100252275
2010-10-07

Lateral well locator and reentry apparatus and method

#356
20100252257
2010-10-07

Multi-window lateral well locator/reentry apparatus and method

#357
20100243243
2010-09-30

Active In-Situ Controlled Permanent Downhole Device

#358
20100212913
2010-08-26

Drilling and completion deflector

#359
20100193181
2010-08-05

Method of running DTS measurements in combination with a back pressure valve

#360
20100181067
2010-07-22

Wireless power and telemetry transmission between connections of well completions

#361
20100170678
2010-07-08

Mounting a module on an underwater structure

#362
20100170677
2010-07-08

Multiple production string apparatus

#363
20100163240
2010-07-01

Downhole multiple bore tubing apparatus

#364
20100126729
2010-05-27

Systems and methods for operating a plurality of wells through a single bore

#365
20100059279
2010-03-11

Downhole window finder system

#366
20090301734
2009-12-10

Downhole application for a backpressure valve

#367
20090301713
2009-12-10

Backpressure valve for wireless communication

#368
20090288817
2009-11-26

Casing exit joint with easily milled, low density barrier

#369
20090271117
2009-10-29

System and Method for Deep Formation Evaluation

#370
20090255687
2009-10-15

Sealing Between Alignable Windows for Lateral Wellbore Drilling

#371
20090255661
2009-10-15

System and method for drilling multilateral wells using magnetic ranging while drilling

#372
20090194292
2009-08-06

Inverted drainholes and the method for producing from inverted drainholes

#373
20090188671
2009-07-30

JUNCTION HAVING IMPROVED FORMATION COLLAPSE RESISTANCE AND METHOD

#374
20090188665
2009-07-30

Monitoring of downhole parameters and tools utilizing fiber optics

#375
20090151950
2009-06-18

Active integrated well completion method and system

#376
20090107678
2009-04-30

Chemically Enhanced Stimulation of oil/gas formations

#377
20090101414
2009-04-23

Apparatus and method for conveyance and control of a high pressure hose in jet drilling operations

#378
20090101363
2009-04-23

Flexible liner for drilled drainhole deployment

#379
20090095533
2009-04-16

Self-contained system for drilling a drainhole

#380
20090080291
2009-03-26

DOWNHOLE GAUGE TELEMETRY SYSTEM AND METHOD FOR A MULTILATERAL WELL

#381
20090078424
2009-03-26

Subsea lateral drilling

#382
20090071644
2009-03-19

APPARATUS AND METHOD FOR WELLBORE ISOLATION

#383
20090066535
2009-03-12

Aligning inductive couplers in a well

#384
20090008083
2009-01-08

Method and apparatus for wellbore fluid treatment

#385
20090008078
2009-01-08

Flow control assembly having a fixed flow control device and an adjustable flow control device

#386
20080314596
2008-12-25

APPARATUS AND METHOD FOR WELLBORE ISOLATION

#387
20080277166
2008-11-13

Downhole drilling of a lateral hole

#388
20080271924
2008-11-06

Drilling Method and Apparatus

#389
20080164065
2008-07-10

Construction of a Tubular at a Downhole Location

#390
20080156495
2008-07-03

Method of using radial thrust elements to re-enter a previously-installed tubular in a lateral

#391
20080156479
2008-07-03

Apparatus for orienting a mule shoe to enter a previously-installed tubular in a lateral and method of use

#392
20080135293
2008-06-12

Methods and apparatus for navigating a tool downhole

#393
20080115940
2008-05-22

Apparatus, system, and method for casing hole formation in radial drilling operations

#394
20080066903
2008-03-20

Method and system for accessing subterranean deposits from the surface and tools therefor

#395
20080060807
2008-03-13

Method and system for accessing subterranean deposits from the surface and tools therefor

#396
20080060806
2008-03-13

Method and system for accessing subterranean deposits from the surface and tools therefor

#397
20080060805
2008-03-13

Method and system for accessing subterranean deposits from the surface and tools therefor

#398
20080060804
2008-03-13

Method and system for accessing subterranean deposits from the surface and tools therefor

#399
20080060799
2008-03-13

Method and system for accessing subterranean deposits from the surface and tools therefor

#400
20080060571
2008-03-13

Method and system for accessing subterranean deposits from the surface and tools therefor

#401
20080017416
2008-01-24

Method of drilling from a shaft for underground recovery of hydrocarbons

#402
20070221380
2007-09-27

Surface controlled subsurface lateral branch safety valve

#403
20070158073
2007-07-12

Fracking multiple casing exit laterals

#404
20070034384
2007-02-15

Whipstock liner

#405
20070007007
2007-01-11

Method and apparatus for wellbore fluid treatment

#406
20060289156
2006-12-28

Lateral control system

#407
20060272809
2006-12-07

Wellbores utilizing fiber optic-based sensors and operating devices

#408
20060260816
2006-11-23

Apparatus and method for improving multilateral well formation and reentry

#409
20060185856
2006-08-24

Multi-layer deformable composite construction for use in a subterranean well

#410
20060131032
2006-06-22

Lining well bore junctions

#411
20060090906
2006-05-04

Apparatus and method for wellbore isolation

#412
20060042792
2006-03-02

Methods and apparatus for locating a lateral wellbore

#413
20060006004
2006-01-12

Method for extracting coal bed methane with source fluid injection

#414
20060000614
2006-01-05

Surface controlled subsurface lateral branch safety valve

#415
20050269084
2005-12-08

Junction assembly, system and method for providing a downhole junction

#416
20050257930
2005-11-24

Method of developing a re-entry into a parent wellbore from a lateral wellbore, and bottom hole assembly for milling

#417
20050252689
2005-11-17

Multi seam coal bed/methane dewatering and depressurizing production system

#418
20050252688
2005-11-17

Electrically operated drilling method

#419
20050247451
2005-11-10

Method and apparatus for completing lateral channels from an existing oil or gas well

#420
20050241834
2005-11-03

Tubing/casing connection for U-tube wells

#421
20050241831
2005-11-03

Anchor for branch wellbore liner

#422
20050241830
2005-11-03

Uncollapsed expandable wellbore junction

#423
20050230151
2005-10-20

Apparatus and method for opening and closing lateral boreholes

#424
20050217858
2005-10-06

Apparatus and method of drilling with casing

#425
20050194188
2005-09-08

Method of drilling and completing multiple wellbores inside a single caisson

#426
20050173121
2005-08-11

Multi-layered wellbore junction

#427
20050150692
2005-07-14

Directional cased hole side track method applying rotary closed loop system and casing mill

#428
20050133219
2005-06-23

Three-dimensional well system for accessing subterranean zones

#429
20050121190
2005-06-09

Segregated deployment of downhole valves for monitoring and control of multilateral wells

#430
20050087345
2005-04-28

Multi-layer deformable composite construction for use in a subterranean well

#431
20050077048
2005-04-14

Downhole tubular splitter assembly and method

#432
20050039915
2005-02-24

Methods for navigating and for positioning devices in a borehole system

#433
20050012036
2005-01-20

Providing a light cell in a wellbore

#434
20050006100
2005-01-13

Self orienting lateral junction system

#435
19055453
2026-05-19

Pump down fiber system, method and tools for multilateral wells

#436
19013691
2026-03-17

Hydrogen production from iron-rich formations

#437
18644250
2024-11-12

Method of controlling tensile-splitting and hydro-shearing parameters during completion of enhanced geothermal system wells

#438
18400827
2025-05-27

System and method for wellbore identification in multi-lateral wellbores

#439
18236102
2025-01-28

Rotatable sleeve for downhole tool

#440
16382812
2019-07-02

Systems, methods, and apparatuses for downhole lateral detection using electromagnetic sensors

#441
15797832
2018-10-02

Multilateral well drilled with underbalanced coiled tubing and stimulated with exothermic reactants

#442
13670283
2016-12-20

Capillary pump down tool