ClassID:

135280

E21B15/00 - page 2 - CPC Classification

Classification description:

Other equipment or details for drilling; Well equipment or well maintenance

Recent Application in this class:
#301
20140138081
2014-05-22

Mechanized and automated well service rig

#302
20140138080
2014-05-22

Tong system for tripping rods and tubulars

#303
20140102803
2014-04-17

DERRICK APPARATUS

#304
20140090333
2014-04-03

Mast assembly with cylinder nested in substructure

#305
20140044508
2014-02-13

System and method for delivery of oilfield materials

#306
20140041319
2014-02-13

System and method for delivery of oilfield materials

#307
20140041317
2014-02-13

System and method for delivery of oilfield materials

#308
20140015530
2014-01-16

Electronics for a thin bed array induction logging system

#309
20130343858
2013-12-26

Method of deploying a mobile rig system

#310
20130343838
2013-12-26

Walkway with pipe moving elements mechanism and method

#311
20130343837
2013-12-26

Automated pipe feed mechanism and method

#312
20130343836
2013-12-26

Long lateral completion system and method for pipe handling

#313
20130343835
2013-12-26

Pipe ejector mechanism and method

#314
20130341965
2013-12-26

Articulating cabin, system and method

#315
20130341096
2013-12-26

Transportable single operator rig apparatus and method for optimizing drilling and/or completion

#316
20130341047
2013-12-26

Drive systems for use with long lateral completion systems and methods

#317
20130341013
2013-12-26

Methods for real time control of a mobile rig

#318
20130341004
2013-12-26

Mobile rig and method

#319
20130340572
2013-12-26

Long lateral completion system pipe tong and method of using the same

#320
20130340356
2013-12-26

Brace support mast assembly for a transportable rig

#321
20130327543
2013-12-12

Drilling rig carriage movable along racks and including pinions driven by electric motors

#322
20130327515
2013-12-12

Enclosed coiled tubing boat and methods

#323
20130318890
2013-12-05

Drilling rig assembly method and apparatus

#324
20130309052
2013-11-21

System and method for mitigating dust migration at a wellsite

#325
20130302114
2013-11-14

Drilling rig employing tubular handling device

#326
20130301678
2013-11-14

Temperature and pressure monitoring system of sealed derrick structure

#327
20130299244
2013-11-14

Drilling rig employing top drive

#328
20130299190
2013-11-14

Drilling rig carriage movable along racks and including pinions driven by electric motors

#329
20130299189
2013-11-14

Drilling rig employing pivoting drilling tower

#330
20130291475
2013-11-07

Support apparatus for wellbore tools

#331
20130291462
2013-11-07

Tension link for drill floor substructure assembly

#332
20130291452
2013-11-07

Bi-directionally raisable drilling rig mast

#333
20130277508
2013-10-24

Retractable cable tray for vertical structures

#334
20130276386
2013-10-24

Substructure of a mobile drilling rig with a movable center floor section

#335
20130269584
2013-10-17

Polar vessel having a derrick

#336
20130269268
2013-10-17

Mobile drilling rig with telescoping substructure boxes

#337
20130220703
2013-08-29

Track guiding system

#338
20130199854
2013-08-08

Safety Protection apparatus for personnel on oil drilling derricks

#339
20130180702
2013-07-18

Workover rig with reinforced mast

#340
20130180186
2013-07-18

Collapsible substructure for a mobile drilling rig

#341
20130180185
2013-07-18

Mast for drilling rigs and methods of assembling the same

#342
20130145723
2013-06-13

Torque track system and method

#343
20130145718
2013-06-13

Support apparatus for wellbore tools

#344
20130126186
2013-05-23

Wellbore tubular handling system

#345
20130118386
2013-05-16

Portable drilling pad

#346
20120318530
2012-12-20

Device for a Tower for Well Operations and Use of Same

#347
20120305316
2012-12-06

EARTH DRILLING APPARATUS AND METHOD

#348
20120304553
2012-12-06

DRILLING RIG SYSTEM WITH SELF-ELEVATING DRILL FLOOR

#349
20120291684
2012-11-22

Ice Breaking Drilling Vessel With Stowable Mast

#350
20120217209
2012-08-30

Solar collector module

#351
20120211281
2012-08-23

Low headroom confined space geoexchange drilling system and method

#352
20120199396
2012-08-09

Drill rig and associated drill rig traverse system

#353
20120167485
2012-07-05

Fast transportable drilling rig system

#354
20120163920
2012-06-28

SUPPORT ASSEMBLY FOR A DRIVE MECHANISM FOR THE INSTALLATION OF GEOTHERMAL CONDUITS ADJACENT A FOUNDATION WALL INSIDE OR OUTSIDE A BUILDING STRUCTURE

#355
20120152537
2012-06-21

AUGER FOR GAS AND LIQUID RECOVERY FROM REGOLITH

#356
20120138327
2012-06-07

Drilling rig with hinged, retractable outriggers

#357
20120103633
2012-05-03

Enclosed coiled tubing boat and methods

#358
20120103632
2012-05-03

Method and apparatus for conducting earth borehole operations

#359
20120072081
2012-03-22

Construction machine having a computer unit for determining an adjustment range

#360
20120066999
2012-03-22

Pinned structural connection using a pin and plug arrangement

#361
20120047820
2012-03-01

Drilling rig mast lift systems and methods

#362
20110302869
2011-12-15

Dual offset derrick

#363
20110240371
2011-10-06

Drilling station

#364
20110226466
2011-09-22

Electric Submersible Pump Service Truck

#365
20110203820
2011-08-25

Track guiding system

#366
20110168421
2011-07-14

Telescoping leader

#367
20110120043
2011-05-26

Articulating mast

#368
20110083840
2011-04-14

WORKOVER RIG WITH REINFORCED MAST

#369
20110024109
2011-02-03

Simultaneous drilling and open hole wireline logging for drilling rigs

#370
20100326734
2010-12-30

Drilling rig assembly method and apparatus

#371
20100143078
2010-06-10

Racking Module

#372
20100059635
2010-03-11

Apparatus having improved interlocking units for flexibly restraining service loops in an oil derrick to prevent entangling of the loops

#373
20090321135
2009-12-31

Rocket rig drilling apparatus

#374
20090320385
2009-12-31

Construction apparatus with pivotable mast

#375
20090218144
2009-09-03

Drilling rig masts and methods of assembly and erecting masts

#376
20090218139
2009-09-03

Drilling rigs and erection methods

#377
20090218138
2009-09-03

Drilling rig structure installation and methods

#378
20090211813
2009-08-27

DRILLING RIG AND METHOD FOR INTRODUCING ONE OR MORE DRILLING PIPES INTO AN UNDERBALANCED WELL USING SAME

#379
20090200856
2009-08-13

Methods and systems for raising and lowering a rig mast and substructure by remote control

#380
20090188677
2009-07-30

Small footprint drilling rig

#381
20090188675
2009-07-30

Drilling rigs with apparatus identification systems and methods

#382
20090139731
2009-06-04

Drilling device and drilling method utilizing dual drives

#383
20090080815
2009-03-26

Light metal feed beam for use on a drill rig

#384
20090000218
2009-01-01

Land rig

#385
20080289818
2008-11-27

Open hole logging for drilling rigs

#386
20080251267
2008-10-16

Rig for drilling or maintaining oil wells

#387
20080197605
2008-08-21

Method for constructing and treating subterranean formations

#388
20080173480
2008-07-24

Method, device and system for drilling rig modification

#389
20080129029
2008-06-05

Extensible equipment mast

#390
20080079605
2008-04-03

Sonde attachment means

#391
20080063498
2008-03-13

Automated system for positioning and supporting the work platform of a mobile workover and well-servicing rig

#392
20080038093
2008-02-14

Automated system for positioning and supporting the work platform of a mobile workover and well-servicing rig

#393
20070240909
2007-10-18

Scissors type vertical elevated substructure

#394
20070209791
2007-09-13

System for conducting jointed pipe and coiled tubing operations

#395
20070193750
2007-08-23

Apparatus for handling and racking pipes

#396
20070144745
2007-06-28

Drilling rig apparatus and downhole tool assembly system and method

#397
20070125552
2007-06-07

Mobile drilling rig with dual carriers

#398
20070125551
2007-06-07

Method and apparatus for conducting earth borehole operations

#399
20070125549
2007-06-07

Universal rig with vertical stand for tubulars

#400
20070011984
2007-01-18

Structural connector for a drilling rig substructure

#401
20060124330
2006-06-15

Construction apparatus

#402
20060027373
2006-02-09

Drilling rig apparatus and downhole tool assembly system and method

#403
20060011351
2006-01-19

Automated system for positioning and supporting the work platform of a mobile workover and well-servicing rig

#404
20050241857
2005-11-03

Method to transport and operate a small footprint tower to reduce environmental impact

#405
20050241823
2005-11-03

Modular drill system requiring limited field assembly and limited equipment support

#406
20050161240
2005-07-28

Two section mast with self-aligning connections

#407
20050126800
2005-06-16

Integrated mast and top drive for drilling rig

#408
20050022985
2005-02-03

Service rig with torque carrier

#409
18332053
2025-08-12

Rotating gin pole

#410
17823820
2023-09-19

Oil rig mast hoisting system

#411
17243913
2023-11-07

Modular rig systems and methods

#412
16051046
2019-07-02

Apparatus and method for more efficiently scanning production tubing that incorporates a cable secured thereto

#413
16038911
2020-08-11

Containment work platform

#414
15401906
2019-02-26

Containment work platform with protruding connection

#415
14835651
2017-02-07

Drilling rig with mini-stabilizer tool

#416
14835645
2016-04-19

Drilling rig with bidirectional dual eccentric reamer

#417
14698815
2016-04-19

Coiled tubing injector handler

#418
14626888
2016-04-05

Drilling rig with top drive with dual opening elevator

#419
14211527
2018-09-11

Containment work platform