ClassID:

135300

E21B17/04 - CPC Classification

Classification description:

Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings Cables; ; Tubings; Couplings; joints between rod and bit or between rod and rod

Sub-classes:
Recent Application in this class:
#1
20260103863
2026-04-16

FOUNDATION SUPPORT SYSTEM SHAFT COUPLER FABRICATION AND ASSEMBLY

#2
20260092510
2026-04-02

MATERIAL AND METHOD OF JOINING SAND CONTROL SCREEN ASSEMBLY

#3
20250297541
2025-09-25

HANDS FREE FRAC LINE CONNECTION METHOD AND SYSTEM

#4
20250290579
2025-09-18

TUBULAR GRIPPING DEVICE

#5
20250277412
2025-09-04

DOWNHOLE TOOL WITH CRACK COMPLIANT SEAL AND HIGH YIELD STRENGTH WELD POSITIONED AT A JOINT THEREOF

#6
20250207344
2025-06-26

BUILDING FOUNDATION SUPPORT SYSTEM WITH RIB AND GROOVE INTERLOCK DRIVE TOOL COUPLER COMPONENT AND PILES

#7
20250207343
2025-06-26

FOUNDATION SUPPORT SYSTEM AND METHOD OF INSTALLATION WITH SELF-ALIGNING TORQUE TRANSMITTING COUPLERS

#8
20250171975
2025-05-29

FOUNDATION SUPPORT SYSTEM SHAFT COUPLER FABRICATION AND ASSEMBLY

#9
20250146366
2025-05-08

Resettable Latch Assembly With Energy Transfer Line(s) Feed Through

#10
20250137492
2025-05-01

FORCE COUPLING ASSEMBLIES AND RELATED SYSTEMS AND METHODS

#11
20250137331
2025-05-01

ROD GUIDE CONFIGURATIONS FOR SUCKER ROD PUMPS

#12
20250109662
2025-04-03

TWO PART MILLING AND RUNNING TOOL EMPLOYING A BODY LOCK RING

#13
20250109659
2025-04-03

MULTILATERAL DOWNHOLE ASSEMBLY EMPLOYING DEGRADABLE MATERIAL TO COUPLE ITS MULTILATERAL DEFLECTOR ASSEMBLY AND RUNNING TOOL

#14
20250109635
2025-04-03

MULTILATERAL MILLING ASSEMBLY EMPLOYING DEGRADABLE MATERIAL

#15
20250003295
2025-01-02

DOWNHOLE TOOL WITH CRACK COMPLIANT SEAL AND HIGH YIELD STRENGTH WELD POSITIONED AT A JOINT THEREOF

#16
20240410235
2024-12-12

MANUFACTURING METHODS FOR DUAL CONCENTRIC TUBING

#17
20240384625
2024-11-21

DRILL STRING MOUNTABLE WELLBORE CLEANUP APPARATUS AND METHOD

#18
20240328263
2024-10-03

CONNECTION ASSEMBLY AND METHOD TO ASSEMBLE SUCKER ROD

#19
20240287857
2024-08-29

CONTRACTION JOINT FOR FIBER OPTICS INTELLIGENT COMPLETION

#20
20240263519
2024-08-08

Short-radius trajectory-controllable drilling tool and combined type steerable drilling tool

#21
20240229983
2024-07-11

WELDING PROCESS FOR SIDE POCKET MANDREL

#22
20240133493
2024-04-25

WELDING PROCESS FOR SIDE POCKET MANDREL

#23
20240117688
2024-04-11

Dual rod assembly and collar installation method

#24
20240117684
2024-04-11

Tubing with selective activated landing profile for well completion

#25
20240084649
2024-03-14

Auger boring using a pipe seal assembly to join together casing pipe sections

#26
20230250709
2023-08-10

Drill string mountable wellbore cleanup apparatus and method

#27
20230235523
2023-07-27

Foundation support system shaft coupler fabrication and assembly

#28
20230193700
2023-06-22

EXPANDABLE CONNECTION FOR EXPANDABLE TUBULARS

#29
20230193699
2023-06-22

EXPANDABLE CONNECTION FOR EXPANDABLE TUBULARS

#30
20230175325
2023-06-08

Drill Pipe With Increased Drill Pipe Body Wall Thickness And Outside Diameter

#31
20230175226
2023-06-08

Modular foundation support systems and methods including shafts with interlocking torque transmitting couplings

#32
20230138660
2023-05-04

DRIVE SHAFT ASSEMBLY WITH CONSTANT VELOCITY JOINTS

#33
20230130962
2023-04-27

Processing route to design and manufacture highly configurable non-magnetic down-hole sensor collars

#34
20230074786
2023-03-09

Tool joint clamp

#35
20230052172
2023-02-16

Torque coupling assemblies and related systems and methods

#36
20230031066
2023-02-02

Extractable cylindrical housing for data transmission

#37
20230023872
2023-01-26

IMPROVEMENT RELATING TO DRILL RODS

#38
20230008617
2023-01-12

VENTURI ACTIVATED DOWNHOLE TORQUE LIMITER

#39
20220412176
2022-12-29

IMPROVEMENT RELATING TO DRILL RODS

#40
20220397023
2022-12-15

Gas lift system

#41
20220381097
2022-12-01

Downhole torque limiter

#42
20220307329
2022-09-29

OUT OF CENTER DOWNHOLE TOOL

#43
20220290513
2022-09-15

Determining stickup height based on pipe tally, block position, and digital images

#44
20220251929
2022-08-11

Metal seal for liner drilling

#45
20220235629
2022-07-28

Coil tubing latch tool

#46
20220196110
2022-06-23

Leaf spring rotational vibration absorber

#47
20220162916
2022-05-26

Manufacturing methods for dual concentric tubing

#48
20220136338
2022-05-05

Horizontal directional drill string having dual fluid paths

#49
20220120167
2022-04-21

Adapters for drilled, uncompleted wells

#50
20220074277
2022-03-10

Methods and systems for disconnecting and reconnecting casing

#51
20220049557
2022-02-17

Tool coupler with sliding coupling members for top drive

#52
20220034169
2022-02-03

High pressure cable head connector

#53
20210388690
2021-12-16

Method for continued drilling operations with a single one-piece wellhead

#54
20210355811
2021-11-18

Tilting entry guide

#55
20210340817
2021-11-04

Drive shaft assembly for downhole drilling motors

#56
20210324690
2021-10-21

Elevator locking system apparatus and methods

#57
20210324684
2021-10-21

Insert for use with dual-member pipe joint

#58
20210317725
2021-10-14

Drill string mountable wellbore cleanup apparatus and method

#59
20210293094
2021-09-23

Drill pipe segments for logging operations

#60
20210270107
2021-09-02

Overpressure toe valve with atmospheric chamber

#61
20210262596
2021-08-26

Fittings, components, and associated tools

#62
20210246751
2021-08-12

Patch for joining downhole ends of pipes

#63
20210231256
2021-07-29

Slip-On Splice-Filter Cage

#64
20210180638
2021-06-17

Wing nut

#65
20210156206
2021-05-27

Wear enhancement of HDD drill string components

#66
20210131497
2021-05-06

Cylindrical contact polygon for torque transmission to a driveshaft

#67
20210131221
2021-05-06

Buoyancy assist tool with degradable nose

#68
20210071381
2021-03-11

Modular foundation support systems and methods including shafts with interlocking torque transmitting couplings

#69
20210041632
2021-02-11

Connection Assembly and Method of Connecting Composite Rods

#70
20210032943
2021-02-04

Composite dual channel drill pipes and method of manufacture

#71
20200393065
2020-12-17

Vacuum insulated tubing for high pressure, high temperature wells, and systems and methods for use thereof, and methods for making

#72
20200378197
2020-12-03

Heave compensation system for assembling a drill string

#73
20200370376
2020-11-26

System and method for pressure isolation and relief across a threaded connection

#74
20200332604
2020-10-22

EXPANDABLE CONNECTION FOR EXPANDABLE TUBULARS

#75
20200308933
2020-10-01

Drill string mountable wellbore cleanup apparatus and method

#76
20200240224
2020-07-30

Methods and systems for disconnecting and reconnecting casing

#77
20200217435
2020-07-09

Fittings, components, and associated tools

#78
20200182044
2020-06-11

MODULAR SHANK ASSEMBLY FOR AN EARTH-BORING TOOL, EARTH-BORING TOOLS INCLUDING MODULAR SHANKS ASSEMBLIES, AND RELATED METHODS

#79
20200109736
2020-04-09

Wing nut

#80
20200109607
2020-04-09

Slimline stop collar

#81
20200063899
2020-02-27

Full-root-radius-threaded wing nut having increased wall thickness

#82
20200024910
2020-01-23

Method and device to supply liquid to a drill pipe

#83
20200018124
2020-01-16

Dampers for mitigation of downhole tool vibrations

#84
20190383104
2019-12-19

Drill string testing system

#85
20190352975
2019-11-21

Horizontal directional drill string having dual fluid paths

#86
20190316712
2019-10-17

Sealed gap sub

#87
20190264509
2019-08-29

Articulated joint for downhole steering assembly

#88
20190226300
2019-07-25

Drill string mountable wellbore cleanup apparatus and method

#89
20190211633
2019-07-11

CORROSION RESISTANT SUCKER ROD

#90
20190195286
2019-06-27

Universal driveshaft assembly

#91
20190162242
2019-05-30

UNIVERSAL JOINT

#92
20190127940
2019-05-02

Modular foundation support systems and methods including shafts with interlocking, self-aligning and torque transmitting couplings

#93
20190100971
2019-04-04

Horizontal connection system for subsea hub connections

#94
20190100969
2019-04-04

Seal and sacrificial components for a drill string

#95
20190085640
2019-03-21

Drilling tool for sinking automatically directionally monitored bores

#96
20190048716
2019-02-14

Downhole tool with multiple welded section

#97
20190048669
2019-02-14

Method for creating a high tensile strength joint for connecting rods and fittings

#98
20190040701
2019-02-07

Inner barrel crimping connection for a coring tool

#99
20190040692
2019-02-07

Insert for use with dual-member pipe joint

#100
20190024474
2019-01-24

Latch assembly using on-board miniature hydraulics for RCD applications

#101
20190017327
2019-01-17

Whipstocking drill for ultra-short-radius well

#102
20190003265
2019-01-03

Manual pipe valve connector for jointed pipe connections with quick release check valve assembly and uses thereof

#103
20180371852
2018-12-27

Volumetric compensator for electric submersible pump

#104
20180340414
2018-11-29

Seal and sacrificial components for a drill string

#105
20180313193
2018-11-01

Metal seal for liner drilling

#106
20180305986
2018-10-25

Preloadable connectors for tubing

#107
20180305984
2018-10-25

SELF-LIMITING C-RING SYSTEM AND METHOD

#108
20180298714
2018-10-18

Downhole tool member for hydrocarbon resource recovery

#109
20180298697
2018-10-18

Bi-Axial Drill Bits and Bit Adaptors

#110
20180291694
2018-10-11

Thermally insulated vertical subsea connection system

#111
20180266594
2018-09-20

Jumper tube connector

#112
20180258999
2018-09-13

Tool coupler with threaded connection for top drive

#113
20180252050
2018-09-06

Tool coupler with sliding coupling members for top drive

#114
20180231158
2018-08-16

Gasket with multiple seal rings

#115
20180223630
2018-08-09

Drill string mountable wellbore cleanup apparatus and method

#116
20180209572
2018-07-26

Coupling apparatus for coiled tubings of different diameters, installing method for coupling apparatus, and installing method for tubings of different diameters using coupling apparatus

#117
20180195380
2018-07-12

APPARATUS AND METHOD FOR SENSING A PIPE COUPLER WITHIN AN OIL WELL STRUCTURE

#118
20180195366
2018-07-12

Shape-Memory Alloy Actuated Fastener

#119
20180187662
2018-07-05

Frac manifold and systems

#120
20180187537
2018-07-05

Flowline junction fitting with long-sweep bore

#121
20180187507
2018-07-05

Offset flange and angled shim flowline fittings

#122
20180171725
2018-06-21

Orientation system and method

#123
20180171724
2018-06-21

Running tool lock mechanism

#124
20180171723
2018-06-21

Shank adaptor with strengthened flushing hole

#125
20180155999
2018-06-07

Systems and methods for reducing bit damage in a landing tool

#126
20180155891
2018-06-07

Interlocking, self-aligning and torque transmitting coupler assembly, systems and methods for connecting, installing, and supporting foundation elements

#127
20180148983
2018-05-31

Apparatus and Method for Fastening of a Cable to a Tubular Body

#128
20180128059
2018-05-10

Packer retrieval extension for metal to metal sealing in tension and compression

#129
20180112473
2018-04-26

Ball socket connector

#130
20180066480
2018-03-08

Stabilizer devices for drilling tool housing

#131
20180051522
2018-02-22

SUCKER ROD TERMINUS ASSEMBLY FOR UNDERGROUND WELLS

#132
20180044997
2018-02-15

Driveshaft catch assembly with pressure plugs

#133
20180030789
2018-02-01

Connecting assembly and receptacle adapted to receive said connecting assembly for connecting two tubing sections, and method for installing and connecting two tubing sections in a wellbore

#134
20180016846
2018-01-18

Drilling assembly utilizing tilted disintegrating device for drilling deviated wellbores

#135
20180016845
2018-01-18

Rotary steerable system with a steering device around a drive coupled to a disintegrating device for forming deviated wellbores

#136
20180016844
2018-01-18

Rotary steerable drilling assembly with a rotating steering device for drilling deviated wellbores

#137
20170370163
2017-12-28

Tapered spline connection for drill pipe, casing, and tubing

#138
20170343046
2017-11-30

Motor shaft transmission interference apparatus

#139
20170342777
2017-11-30

Drill bit for pulling material through pilot-channel

#140
20170335636
2017-11-23

Axial retention connection for a downhole tool

#141
20170314386
2017-11-02

Acoustic detection of drill pipe connections

#142
20170292642
2017-10-12

Manual quick connect hub clamping system

#143
20170261038
2017-09-14

Torque transmission joint with shape-memory alloy cladding for a bottom-hole assembly

#144
20170254158
2017-09-07

Friction reducing wear band and method of coupling a wear band to a tubular

#145
20170242153
2017-08-24

System for geosteering and formation evaluation utilizing near-bit sensors

#146
20170219141
2017-08-03

Quick connect connection

#147
20170219137
2017-08-03

Pipe coupling make up assembly

#148
20170211330
2017-07-27

Method and application for directional drilling with an asymmetric deflecting bend

#149
20170198535
2017-07-13

Method for putting together a down-the-hole drilling apparatus for plastic pipe drilling and a down-the-hole drilling apparatus

#150
20170183924
2017-06-29

System and method for installing or removing a seal sub from a riser

#151
20170183923
2017-06-29

Heave compensation system for assembling a drill string

#152
20170175937
2017-06-22

Drilling riser flanges and assemblies with contoured bearing surfaces to reduce shear in connectors

#153
20170175460
2017-06-22

Tubular connection assembly for improved fatigue performance of metallic risers

#154
20170167644
2017-06-15

Fittings, components, and associated tools

#155
20170165809
2017-06-15

Release of subsea clamp connector by waterjet cutting of drive screw

#156
20170159717
2017-06-08

Universal driveshaft assembly

#157
20170152711
2017-06-01

Down the hole hammer and systems and components thereof

#158
20170122072
2017-05-04

Drill string mountable wellbore cleanup apparatus and method

#159
20170114862
2017-04-27

Coupler for stranded rope

#160
20170114836
2017-04-27

Flexible joint connection

#161
20170101830
2017-04-13

Threaded joint for steel pipes

#162
20170081947
2017-03-23

Submarine connection assembly

#163
20170080518
2017-03-23

Fabrication of pipe strings using friction stir welding

#164
20170067297
2017-03-09

Tapered spline connection for drill pipe, casing, and tubing

#165
20170067138
2017-03-09

Non-magnetic, strong carbide forming alloys for powder manufacture

#166
20170058647
2017-03-02

Tubing system having alternate path

#167
20170058607
2017-03-02

Drill bit for a drilling apparatus

#168
20170051562
2017-02-23

Resettable downhole torque limiter and related methods of use

#169
20170037683
2017-02-09

Method of using a top drive system

#170
20170037590
2017-02-09

Interlocking, self-aligning and torque transmitting coupler assembly, systems and methods for connecting, installing, and supporting foundation elements

#171
20160362942
2016-12-15

Method for producing a tensile armor configuration of a flexible conduit and a connector for a flexible conduit

#172
20160356115
2016-12-08

Variable height backup assembly for articulating boots

#173
20160340992
2016-11-24

System and methodology for coupling tubing

#174
20160333645
2016-11-17

Sucker rod

#175
20160333540
2016-11-17

Interlocking, self-aligning and torque transmitting coupler assembly

#176
20160319601
2016-11-03

Steerable rotary drilling devices incorporating a tilted drive shaft

#177
20160312550
2016-10-27

Multi-Bolt or Nut Torque Wrench Device for Installing or Removing A Plurality of Threaded Bolt or Nut Members

#178
20160312544
2016-10-27

Bend stiffener assembly

#179
20160305195
2016-10-20

Mill catch mechanism

#180
20160305194
2016-10-20

Heat treated heavy weight drill pipe

#181
20160290110
2016-10-06

Screened communication connector for a production tubing joint

#182
20160281432
2016-09-29

Direct torque helical displacement well and hydrostatic liquid pressure relief device

#183
20160258248
2016-09-08

Shape-memory alloy actuated fastener

#184
20160251910
2016-09-01

RISER BEARING WITH HIGH SHAPE FACTOR

#185
20160237749
2016-08-18

Adjustable bend assembly for a downhole motor

#186
20160230478
2016-08-11

Quick connect for wellbore tubulars

#187
20160215569
2016-07-28

Shank adaptor with fracture resistant flushing hole

#188
20160208560
2016-07-21

Fracturing tube system

#189
20160201409
2016-07-14

METHOD FOR PUTTING TOGETHER OF A DRILLING DEVICE AND DRILLING DEVICE

#190
20160201404
2016-07-14

Device for the connection of rods for rotational drive of a downhole pumping apparatus

#191
20160201403
2016-07-14

Composite Sucker Rod Assemblies

#192
20160186502
2016-06-30

Control line protection system

#193
20160144415
2016-05-26

SUCKER ROD

#194
20160130879
2016-05-12

Method in putting together of a down-the-hole drilling apparatus and a down-the-hole drilling apparatus

#195
20160108696
2016-04-21

Member for hydrocarbon resource collection downhole tool

#196
20160102694
2016-04-14

SUCKER ROD AND END FITTING WITH COMPRESSION PRESET

#197
20160102504
2016-04-14

END FITTING FOR SUCKER RODS

#198
20160097243
2016-04-07

Extra Low Profile Cable Protectors

#199
20160084066
2016-03-24

Riser monitoring system and method

#200
20160084047
2016-03-24

System and method for removing a liner overlap at a multilateral junction

#201
20160084029
2016-03-24

Pipe conveyed logging while fishing

#202
20160084006
2016-03-24

Independent modification of drill string portion rotational speed

#203
20160060970
2016-03-03

Universal joint

#204
20160060969
2016-03-03

Sucker rod apparatus and method

#205
20160060968
2016-03-03

SUCKER ROD ASSEMBLY

#206
20160047178
2016-02-18

Morphing tubulars

#207
20160047177
2016-02-18

Connector apparatus

#208
20160047176
2016-02-18

Apparatus and Method of Connecting Tubular Members In Multi-Lateral Wellbores

#209
20160032662
2016-02-04

Drilling riser assemblies

#210
20160032661
2016-02-04

Adjustable conduit

#211
20160017678
2016-01-21

Fluid flow during landing of logging tools in bottom hole assembly

#212
20160010398
2016-01-14

Method and system for setting a metal seal

#213
20160003406
2016-01-07

Techniques for coating pipes

#214
20160002984
2016-01-07

Wireline connector including an electromagnet and a metal

#215
20150361728
2015-12-17

Cold Forming and Heat Treatment Process for Tubulars

#216
20150354295
2015-12-10

Underwater connection assembly and connection method

#217
20150345221
2015-12-03

Downhole drilling assembly having a hydraulically actuated clutch and method for use of same

#218
20150337659
2015-11-26

Connection means with shape memory

#219
20150322729
2015-11-12

Rod section and rod section system

#220
20150315849
2015-11-05

Load cross-over slip-joint mechanism and method of use

#221
20150292273
2015-10-15

Enhanced interconnect for downhole tools

#222
20150285008
2015-10-08

Downhole connector

#223
20150240625
2015-08-27

Apparatus and method for sensing a pipe coupler within an oil well structure

#224
20150240569
2015-08-27

Drilling motor with one-way rotary clutch

#225
20150233183
2015-08-20

Direct pullback devices and method of horizontal drilling

#226
20150218897
2015-08-06

Method for connecting a drill head to a drill pipe, and device for holding a drill head

#227
20150204146
2015-07-23

Rotating control device having jumper for riser auxiliary line

#228
20150198026
2015-07-16

Steam environmentally generated drainage system and method

#229
20150198016
2015-07-16

System and methodology for forming gravel packs

#230
20150197995
2015-07-16

Retrievable tubing connector system

#231
20150176744
2015-06-25

Gasket

#232
20150176347
2015-06-25

Heave compensation system for assembling a drill string

#233
20150167458
2015-06-18

System And Method For Detecting Hydrogen Sulfide In A Formation Sampling Tool

#234
20150167404
2015-06-18

Hang-off gimbal assembly

#235
20150136423
2015-05-21

Fluid connector assembly with automatic flow shut-off and method usable for establishing a fluid connection

#236
20150122548
2015-05-07

Method and system for directional drilling and coupling sub

#237
20150122502
2015-05-07

RISER SECTIONS AND METHODS FOR MAKING SAME

#238
20150114619
2015-04-30

Tubing hanger annulus access perforated stem design

#239
20150075780
2015-03-19

Multi-zone completion systems and methods

#240
20150068814
2015-03-12

Drill pipe protector assembly

#241
20150060087
2015-03-05

Connection apparatus for coiled tubing and method of attaching same

#242
20150053408
2015-02-26

Method and system for operating a downhole tool, for fracturing a formation and/or for completing a wellbore

#243
20150053406
2015-02-26

Pre-tensing sections of concentric tubulars

#244
20150050083
2015-02-19

LOCKING RING WITH STABILIZING BLADES

#245
20150047907
2015-02-19

WRAP-AROUND BAND TOOL CONNECTOR AND METHOD OF FORMING

#246
20150047856
2015-02-19

Wrap-around stop collar and method of forming

#247
20150034388
2015-02-05

Downhole motor coupling systems and methods

#248
20150028168
2015-01-29

Multi-Conduit Coiled Tubing Assembly

#249
20150027785
2015-01-29

BOREHOLE CUTTER RETENTION AND FASTENING/LOCKING SYSTEM

#250
20150008042
2015-01-08

Friction reducing wear band and method of coupling a wear band to a tubular

#251
20150008040
2015-01-08

Drilling device and drilling method

#252
20150008002
2015-01-08

Tapered spline connection for drill pipe, casing, and tubing

#253
20150007993
2015-01-08

Protection of casing lowside while milling casing exit

#254
20140332276
2014-11-13

Method and apparatus for plastic pipe drilling

#255
20140318809
2014-10-30

Connector device for use in wireline intervention operations

#256
20140311754
2014-10-23

System and method for splicing a non-spoolable tool anywhere along a coiled tubing string

#257
20140305711
2014-10-16

Downhole drilling assembly

#258
20140305710
2014-10-16

Downhole drilling assembly

#259
20140166370
2014-06-19

Downhole torque limiting assembly for drill string

#260
20140166368
2014-06-19

Method and system for improving drilling speed by using drill speed vibration

#261
20140138157
2014-05-22

Drill bit for a drilling apparatus

#262
20140103646
2014-04-17

Composite coiled tubing connectors

#263
20140103643
2014-04-17

Friction welded heavy weight drill pipes

#264
20140102715
2014-04-17

Sucker rod apparatus and method

#265
20140060856
2014-03-06

Resettable downhole torque limiter and related methods of use

#266
20140054886
2014-02-27

Tapered spline connection for drill pipe, casing, and tubing

#267
20130336711
2013-12-19

High tensile strength joint for connecting rods and fittings

#268
20130220705
2013-08-29

ASSEMBLED DRILLING TOOL

#269
20130213668
2013-08-22

Well tool assemblies with quick connectors and shock mitigating capabilities

#270
20130209164
2013-08-15

Aligned angled well tool weld joint

#271
20130199799
2013-08-08

Contraction joint system

#272
20130180707
2013-07-18

Rugged Coiled Tubing Connector

#273
20130175047
2013-07-11

Variably configurable wellbore junction assembly

#274
20130161027
2013-06-27

Unequal load collet and method of use

#275
20130112481
2013-05-09

Drill members for mine roofs

#276
20130039691
2013-02-14

Sucker rod apparatus and method

#277
20130025936
2013-01-31

Ground-drilling device

#278
20130008662
2013-01-10

Clamping arrangement

#279
20120313472
2012-12-13

MAGNETIC PARTICLE INDUCED PLUGGING RESISTANT MAGNETIC COUPLING

#280
20120305266
2012-12-06

Variably configurable wellbore junction assembly

#281
20120282033
2012-11-08

Rod assembly and device for trenchless rehabilitation of pipelines

#282
20120261194
2012-10-18

DRILLING A BOREHOLE AND HYBRID DRILL STRING

#283
20120255742
2012-10-11

Borehole metal member bonding system and method

#284
20120241170
2012-09-27

Well tool assemblies with quick connectors and shock mitigating capabilities

#285
20120241169
2012-09-27

WELL TOOL ASSEMBLIES WITH QUICK CONNECTORS AND SHOCK MITIGATING CAPABILITIES

#286
20120211244
2012-08-23

Top drive system

#287
20120205908
2012-08-16

Plug connection and pipe section for a drill pipe

#288
20120196690
2012-08-02

Drive shaft universal joint assembly with radial elliptical projections

#289
20120145464
2012-06-14

BIT ASSEMBLY FOR A DOWN-THE-HOLE HAMMER DRILL

#290
20120139237
2012-06-07

PIPE CONNECTION AND DEVICE FOR FORMING A PIPE CONNECTION

#291
20120125691
2012-05-24

Modular drilling system

#292
20120111640
2012-05-10

Downhole drilling assembly

#293
20110272940
2011-11-10

CONNECTOR FOR SPOOLABLE MEDIA

#294
20110266062
2011-11-03

Latching configuration for a microtunneling apparatus

#295
20110266057
2011-11-03

Device including an apparatus for measuring drilling or coring operation parameters, and equipment including such a device

#296
20110240313
2011-10-06

Resettable downhole torque limiter and related methods of use

#297
20110239434
2011-10-06

Device for connecting a string section with a pulling element which extends through the string section, and method for tensioning of string sections to form a string

#298
20110227331
2011-09-22

Connection system for tubular members

#299
20110215569
2011-09-08

Connection between a drill pipe and a connector

#300
20110209881
2011-09-01

Pressure-activated valve for hybrid coiled tubing jointed tubing tool string