ClassID:

135404

E21B23/006 - CPC Classification

Classification description:

Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells; Indexing systems for guiding relative movement between telescoping parts of downhole tools "J-slot" systems, i.e. lug and slot indexing mechanisms

Recent Application in this class:
#1
20260125961
2026-05-07

TUBING ANCHOR CATCHER OPERATED BY MANDREL AXIAL MOVEMENT

#2
20260022617
2026-01-22

Dormant Packer Fracturing Completion System

#3
20250334024
2025-10-30

DOWNHOLE ISOLATION TOOL INCLUDING AN ISOLATION SLEEVE AND SACRIFICIAL PLUG MEMBER

#4
20250250881
2025-08-07

DRILLING HEAD ASSEMBLY WITH LATCHING SYSTEM AND FLUID RETENTION MECHANISM

#5
20250250871
2025-08-07

Fluid-Driven Dual-Mode Circulation Tool

#6
20250250870
2025-08-07

Fluid-Driven Dual-Mode Circulation Tool

#7
20250250866
2025-08-07

DRILLING HEAD ASSEMBLY WITH LATCHING SYSTEM AND FLUID RETENTION MECHANISM

#8
20250237114
2025-07-24

Indexing Control System

#9
20250163770
2025-05-22

GRAVITY ACTUATED CONNECTION MECHANISM FOR HIGH PRESSURE WELLHEAD APPLICATIONS

#10
20250137337
2025-05-01

SHEARABLE LOCK MECHANISM FOR STORM PACKER ANCHOR

#11
20250101825
2025-03-27

APPARATUS FOR CONTROLLING A DOWNHOLE DEVICE

#12
20250067137
2025-02-27

SPRING RETURN SYSTEM

#13
20240271495
2024-08-15

RUNNING AND RETRIEVAL TOOL

#14
20240218759
2024-07-04

DOWNHOLE VALVE ASSEMBLY WITH CEMENT-ISOLATED FLOWPATH

#15
20240209713
2024-06-27

Split hanger tubing hanger

#16
20240141739
2024-05-02

Indexing Control System

#17
20240117699
2024-04-11

Gravity actuated connection mechanism for high pressure wellhead applications

#18
20240060375
2024-02-22

Treatment system, method, and borehole system

#19
20240044211
2024-02-08

Omni-directional horizontally orientaed deflecting tool for coiled tubing

#20
20230399921
2023-12-14

Multiple cycle deployable and retractable downhole scraper or brush

#21
20230399903
2023-12-14

Quarter-turn anchor catcher having anti-rotation sleeve and allowing for high annular flow

#22
20230392474
2023-12-07

Pressure actuated valve for use during installation and commission of a production string

#23
20230374875
2023-11-23

Selectively activatable downhole tool

#24
20230323752
2023-10-12

INDEXING INJECTION VALVE, METHOD, AND SYSTEM

#25
20230146814
2023-05-11

Debris resistant alignment system and method

#26
20230105282
2023-04-06

Gravity actuated connection mechanism for high pressure wellhead applications

#27
20230100469
2023-03-30

Downhole component deployment method and apparatus

#28
20230066849
2023-03-02

Methods and apparatuses for gaining reentry below abandoned packers

#29
20230064658
2023-03-02

Mechanical jar, method and system

#30
20230049390
2023-02-16

Downhole tool with casing scraper with induced rotation

#31
20230003091
2023-01-05

INDEXING TRACK AND PIN

#32
20220341288
2022-10-27

Downhole method and associated apparatus

#33
20220316284
2022-10-06

Variable-length axial linkage for tubular running tools

#34
20220307348
2022-09-29

Downhole tool actuator with viscous fluid clearance paths

#35
20220259949
2022-08-18

Lateral locating assembly for lateral intervention

#36
20220259930
2022-08-18

INTERNAL LATCH RELEASE MECHANISM FOR EXTERNALLY-GRIPPING CASING RUNNING TOOLS

#37
20220243541
2022-08-04

AXIAL-LOAD-ACTUATED ROTARY LATCH RELEASE MECHANISMS FOR CASING RUNNING TOOLS

#38
20220228452
2022-07-21

Sleeve valves, shifting tools and methods for wellbore completion operations therewith

#39
20220220817
2022-07-14

Retrievable packer with delayed setting

#40
20220213743
2022-07-07

Indexing mechanisms

#41
20220170334
2022-06-02

Apparatuses and methods for locating and shifting a downhole flow control member

#42
20220136368
2022-05-05

Indexing tool system for a resource exploration and recovery system

#43
20220136355
2022-05-05

Release lugs for a jarring device

#44
20220098945
2022-03-31

Relating to well abandonment and slot recovery

#45
20220074269
2022-03-10

Wellbore underreaming

#46
20220018228
2022-01-20

Internally adjustable flow control module

#47
20210404260
2021-12-30

Downhole steering system and methods

#48
20210355764
2021-11-18

Axial-load-actuated rotary latch release mechanisms for casing running tools

#49
20210348466
2021-11-11

Gravity actuated connection mechanism for high pressure wellhead applications

#50
20210301612
2021-09-30

Downhole tool

#51
20210301605
2021-09-30

Deploying material to limit losses of drilling fluid in a wellbore

#52
20210277745
2021-09-09

Rotating stinger valve for J-slot connector

#53
20210277736
2021-09-09

SETTING MECHANICAL BARRIERS IN A SINGLE RUN

#54
20210262307
2021-08-26

Fish retrieval from wellbore

#55
20210254420
2021-08-19

Drill pipe string conveyed retrievable plug system

#56
20210254419
2021-08-19

Downhole tool actuators and indexing mechanisms

#57
20210164320
2021-06-03

Straddle packer with fluid pressure packer set and automatic stay-set

#58
20210156218
2021-05-27

Cased bore straddle packer

#59
20210102433
2021-04-08

Pressure cycle device

#60
20210087929
2021-03-25

Activation and control of downhole tools including a non-rotating power section option

#61
20210079769
2021-03-18

Hydraulic underbalance initiated safety firing head, well completion apparatus incorporating same, and method of use

#62
20210054710
2021-02-25

Fish retrieval from wellbore

#63
20210002980
2021-01-07

Apparatus, systems and methods for completion operations

#64
20200386072
2020-12-10

Shearable split ball seat

#65
20200386071
2020-12-10

Shearable split ball seat

#66
20200291748
2020-09-17

Milling and whipstock assembly with flow diversion component

#67
20200256153
2020-08-13

Straddle packer with fluid pressure packer set and automatic stay-set

#68
20200256128
2020-08-13

Deflector assembly and efficient method for multi-stage fracturing a multilateral well using the same

#69
20200217161
2020-07-09

Release lugs for a jarring device

#70
20200190945
2020-06-18

Valve assembly and method of controlling fluid flow in an oil, gas or water well

#71
20200157917
2020-05-21

Testable sliding sleeve valve

#72
20200149363
2020-05-14

Multilateral multistage system and method

#73
20200141188
2020-05-07

Downhole steering system and methods

#74
20200131880
2020-04-30

DOWNHOLE PACKER TOOL ENGAGING AND OPENING PORT SLEEVE UTILIZING HYDRAULIC FORCE OF FRACTURING FLUID

#75
20200131873
2020-04-30

RELEASABLE TOOL FOR EFFECTING COUPLING WITHIN A WELLBORE

#76
20200080400
2020-03-12

Casing scraper activated and deactivated downhole

#77
20200063513
2020-02-27

Apparatuses and methods for locating and shifting a downhole flow control member

#78
20200040703
2020-02-06

Downhole sleeve assembly and sleeve actuator therefor

#79
20200024917
2020-01-23

Mode selector for a downhole tool

#80
20200024916
2020-01-23

Sleeve valves, shifting tools and methods for wellbore completion operations therewith

#81
20200011161
2020-01-09

Downhole apparatus

#82
20190376368
2019-12-12

Tubular isolation valve resettable lock open mechanism

#83
20190360308
2019-11-28

Multi-cycle wellbore clean-out tool

#84
20190292863
2019-09-26

Downhole tool assembly

#85
20190284902
2019-09-19

Downhole valve assembly having an integrated j-slot

#86
20190284898
2019-09-19

Tandem releasable bridge plug system and method for setting such tandem releasable plugs

#87
20190271215
2019-09-05

Top-down fracturing system

#88
20190249506
2019-08-15

Assembly and method for performing aligned operation with tool oriented in downhole tubular

#89
20190226293
2019-07-25

Shifting tool for a downhole tool

#90
20190186229
2019-06-20

Cased bore straddle packer

#91
20190169948
2019-06-06

Downhole tool actuators and indexing mechanisms

#92
20190162058
2019-05-30

Hydraulic underbalance initiated safety firing head, well completion apparatus incorporating same, and method of use

#93
20190153806
2019-05-23

DIAGNOSTIC TOOL FOR WELL ABANDONMENT TOOL

#94
20190136655
2019-05-09

Mechanical rotating control device latch assembly

#95
20190112886
2019-04-18

Installation and retrieval of well pressure control device releasable assembly

#96
20190106964
2019-04-11

Top-down squeeze system and method

#97
20190055804
2019-02-21

Release lugs for a jarring device

#98
20190032450
2019-01-31

Valve and method

#99
20180371857
2018-12-27

Unseating tool for downhole standing valve

#100
20180328144
2018-11-15

Wellbore tool with pressure actuated indexing mechanism and method

#101
20180328129
2018-11-15

Circulation subassembly

#102
20180258745
2018-09-13

System and method for stimulating a well

#103
20180258727
2018-09-13

Running tool for tubing hanger

#104
20180258721
2018-09-13

DOWNHOLE VALVE ASSEMBLY AND METHOD OF USING SAME

#105
20180245426
2018-08-30

Top-down squeeze system and method

#106
20180238137
2018-08-23

Apparatus and method for opening and closing in multiple cycles a downhole sleeve using an intervention tool

#107
20180238131
2018-08-23

Selective downhole actuator

#108
20180209246
2018-07-26

Tubular isolation valve resettable lock open mechanism

#109
20180171734
2018-06-21

Apparatuses and methods for locating and shifting a downhole flow control member

#110
20180163490
2018-06-14

Dual direction J-slot tool

#111
20180112494
2018-04-26

Repeatedly pressure operated ported sub with multiple ball catcher

#112
20180058162
2018-03-01

Passively motion compensated tubing hanger running tool assembly

#113
20180058155
2018-03-01

Passively motion compensated subsea well system

#114
20180038221
2018-02-08

Apparatus and method for locating and setting a tool in a profile

#115
20180038201
2018-02-08

Remote hydraulic control of downhole tools

#116
20180023370
2018-01-25

Selective rotationally aligning indicating mechanism

#117
20170370168
2017-12-28

Downhole tool actuation system having indexing mechanism and method

#118
20170314339
2017-11-02

Drill string element and detachable driving element

#119
20170275972
2017-09-28

Method and tool for perforating a wellbore casing in a formation using a sand jet, and using such tool to further frac the formation

#120
20170234109
2017-08-17

Force multiplyer used to actuate a ball valve

#121
20170226820
2017-08-10

System and method for isolating a section of a well

#122
20170211346
2017-07-27

REDUCED FRICTION J-LATCH DEVICE

#123
20170191335
2017-07-06

Tubular wellhead component coupling systems and method

#124
20170191332
2017-07-06

Shoulder, shoulder tool, and method of shoulder installation

#125
20170191330
2017-07-06

Mechanical hammering tool for use in oil wells

#126
20170191324
2017-07-06

Hanger, hanger tool, and method of hanger installation

#127
20170183931
2017-06-29

Fracking tool further having a dump port for sand flushing, and method of fracking a formation using such tool

#128
20170167225
2017-06-15

Float valve with resettable auto-fill

#129
20170159408
2017-06-08

Compression activated bypass valve

#130
20170130544
2017-05-11

Downhole fluid flow diverting

#131
20170114602
2017-04-27

Mechanically coupling a bearing assembly to a rotating control device

#132
20170089177
2017-03-30

Controller for downhole tool

#133
20170089175
2017-03-30

Flow activated valve

#134
20170081927
2017-03-23

Relockable shearing swivel tool apparatus and method

#135
20170058644
2017-03-02

Downhole sleeve assembly and sleeve actuator therefor

#136
20170051574
2017-02-23

MULTI-STAGE WELL ISOLATION AND FRACTURING

#137
20170044860
2017-02-16

Downhole fishing tool and method of use

#138
20170044858
2017-02-16

Running tool lock open device

#139
20170030168
2017-02-02

Top-down fracturing system

#140
20170002618
2017-01-05

Downhole fishing tool and method of use

#141
20160362962
2016-12-15

Sliding sleeve having indexing mechanism and expandable sleeve

#142
20160333666
2016-11-17

Manipulating a downhole rotational device

#143
20160326849
2016-11-10

Downhole apparatus

#144
20160326835
2016-11-10

Wellbore stimulation tool, assembly and method

#145
20160305228
2016-10-20

Method and apparatus for injecting fluid into spaced injection zones in an oil/gas well

#146
20160305226
2016-10-20

Multi-perforating tool

#147
20160298420
2016-10-13

Multi-pressure toe valve

#148
20160273322
2016-09-22

Flow control mechanism for downhole tool

#149
20160273319
2016-09-22

Downhole flow control apparatus with screen

#150
20160273289
2016-09-22

Downhole tool

#151
20160258258
2016-09-08

Method and tool for perforating a wellbore casing in a formation using a sand jet, and using such tool to further frac the formation

#152
20160251939
2016-09-01

Tool for opening and closing sleeves within a wellbore

#153
20160245032
2016-08-25

Multi-cycle pipe cutter and related methods

#154
20160230505
2016-08-11

Hydraulically actuated tool with pressure isolator

#155
20160215590
2016-07-28

Apparatus, system and method for treating a reservoir using re-closeable sleeves and novel use of a shifting tool

#156
20160201413
2016-07-14

Off bottom flow diverter sub

#157
20160177669
2016-06-23

Opposed ramp assembly for subterranean tool with load bearing lug and anti-jam feature

#158
20160177632
2016-06-23

String indexing device to prevent inadvertent tool operation with a string mounted operating device

#159
20160145971
2016-05-26

Alignment apparatus for a sliding sleeve subterranean tool

#160
20160130910
2016-05-12

Indexing stimulating sleeve and other downhole tools

#161
20160130903
2016-05-12

Casing removal tool and methods of use for well abandonment

#162
20160130897
2016-05-12

Apparatus and method for controlling a downhole device

#163
20160090815
2016-03-31

Pressure actuated downhole tool

#164
20160084027
2016-03-24

Downhole system having selective locking apparatus and method

#165
20160076338
2016-03-17

Downhole adjustable steam injection mandrel

#166
20160069150
2016-03-10

Running tool with independent housing rotation sleeve

#167
20160069147
2016-03-10

Downhole apparatus and associated methods

#168
20160032687
2016-02-04

Resettable remote and manual actuated well tool

#169
20160024875
2016-01-28

Downhole packer with multiple areas of relative rotation

#170
20160024850
2016-01-28

Hydraulic control of drill string tools

#171
20160017690
2016-01-21

Pressure activated cyclical valve apparatus and method

#172
20160017677
2016-01-21

Release valve used in an inner tube assembly for use with a core barrel

#173
20160017672
2016-01-21

Overshot tool having latch control means

#174
20150376975
2015-12-31

Synchronic dual packer with energized slip joint

#175
20150368995
2015-12-24

Hydrostatic setting tool

#176
20150337625
2015-11-26

Pressure actuated ported sub for subterranean cement completions

#177
20150275641
2015-10-01

Method of treating a downhole formation using a downhole packer

#178
20150259990
2015-09-17

Tubing hanger orientation spool

#179
20150240593
2015-08-27

Apparatus and method for controlling multiple downhole devices

#180
20150226028
2015-08-13

Downhole repeat micro-zonal isolation assembly and method

#181
20150144358
2015-05-28

Downhole release tool

#182
20150101795
2015-04-16

Downhole packer with multiple areas of relative rotation

#183
20150096766
2015-04-09

Floating device running tool

#184
20150075815
2015-03-19

Apparatus and methods setting a string at particular locations in a wellbore for performing a wellbore operation

#185
20150075639
2015-03-19

Plug counter, fracing system and method

#186
20150041141
2015-02-12

Mechanically actuated device positioned below mechanically actuated release assembly utilizing J-slot device

#187
20140345705
2014-11-27

Flow activated circulating valve

#188
20140318806
2014-10-30

Apparatus and method for controlling a downhole device

#189
20140305633
2014-10-16

Capillary injection delivery system having tubing anchor

#190
20140262343
2014-09-18

Rotatable tubing anchor

#191
20140262277
2014-09-18

Downhole tool for debris removal

#192
20140262211
2014-09-18

Controller for downhole tool

#193
20140224475
2014-08-14

Downhole actuating apparatus

#194
20140182849
2014-07-03

Wellbore servicing assemblies and methods of using the same

#195
20140158367
2014-06-12

Wellhead latch and removal systems

#196
20140158361
2014-06-12

Pressure controlled multi-shift frac sleeve system

#197
20140144642
2014-05-29

Downhole valve assembly and methods of using the same

#198
20140131109
2014-05-15

Adjustable diameter underreamer and methods of use

#199
20140124220
2014-05-08

Mechanically actuated device positioned below mechanically actuated release assembly utilizing J-slot device

#200
20140124195
2014-05-08

Apparatus and method to remotely control fluid flow in tubular strings and wellbore annulus

#201
20140102703
2014-04-17

Pressure actuated ported sub for subterranean cement completions

#202
20140076578
2014-03-20

Downhole tool

#203
20140069634
2014-03-13

Method and apparatus for securing and using hyrdajetting tools

#204
20140014360
2014-01-16

Multi-cycle circulating tool

#205
20140014347
2014-01-16

Formation treatment system

#206
20140008071
2014-01-09

Wellbore servicing assemblies and methods of using the same

#207
20130327519
2013-12-12

TUBING TEST SYSTEM

#208
20130299200
2013-11-14

Wellbore tools and methods

#209
20130299184
2013-11-14

Multi-cycle ball activated circulation tool with flow blocking capability

#210
20130299173
2013-11-14

Downhole assembly with debris relief, and method for using same

#211
20130269951
2013-10-17

Apparatus and method to remotely control fluid flow in tubular strings and wellbore annulus

#212
20130269938
2013-10-17

Well treatment apparatus, system, and method

#213
20130248201
2013-09-26

Method and apparatus for actuating a downhole tool

#214
20130220638
2013-08-29

Hydrostatic setting tool

#215
20130220603
2013-08-29

Indexing sleeve for single-trip, multi-stage fracing

#216
20130220596
2013-08-29

Wellbore cleaning method and apparatus

#217
20130199785
2013-08-08

Multi-cycle pipe cutter and related methods

#218
20130192897
2013-08-01

Downhole tool activation

#219
20130192819
2013-08-01

Subterranean well tools having nonmetallic drag block sleeves

#220
20130133891
2013-05-30

Tool assembly including an equalization valve

#221
20130118758
2013-05-16

Hydrostatic pressure independent actuators and methods

#222
20130112436
2013-05-09

Completion method for stimulation of multiple intervals

#223
20130112435
2013-05-09

Completion method for stimulation of multiple intervals

#224
20130105172
2013-05-02

Pressure cycle independent indexer and methods

#225
20130056282
2013-03-07

Running tool with independent housing rotation sleeve

#226
20130048273
2013-02-28

Resettable lock for a subterranean tool

#227
20130025882
2013-01-31

Method to restrict the number of cycles in a continuous j-slot in a downhole tool

#228
20130025871
2013-01-31

Plug counter, fracing system and method

#229
20130025868
2013-01-31

Downhole actuating apparatus

#230
20130014956
2013-01-17

Wellbore circulation tool and method

#231
20120227973
2012-09-13

Tool with multisize segmented ring seat

#232
20120205117
2012-08-16

Travel joint having an infinite slot mechanism for space out operations in a wellbore

#233
20120199364
2012-08-09

Resettable pressure cycle-operated production valve and method

#234
20120199363
2012-08-09

Cam mechanism for downhole rotary valve actuation and a method for drilling

#235
20120186817
2012-07-26

Multi-cycle pipe cutter and related methods

#236
20120186802
2012-07-26

Well treatment device, method, and system

#237
20120125628
2012-05-24

Control apparatus for downhole valves

#238
20120118579
2012-05-17

Multi-position valve for fracturing and sand control and associated completion methods

#239
20120085542
2012-04-12

Barrier valve hydraulic operator with compound valve opening force feature

#240
20120080231
2012-04-05

Remotely controlled apparatus for downhole applications and related methods

#241
20120080202
2012-04-05

Downhole apparatus with packer cup and slip

#242
20120080183
2012-04-05

Remotely controlled apparatus for downhole applications, components for such apparatus, remote status indication devices for such apparatus, and related methods

#243
20120055671
2012-03-08

Multi-functional isolation tool and method of use

#244
20120048556
2012-03-01

Fracing system and method

#245
20120037426
2012-02-16

Downhole tool

#246
20120006553
2012-01-12

Injection valve with indexing mechanism

#247
20110315390
2011-12-29

Tool with multi-size ball seat having segmented arcuate ball support member

#248
20110308820
2011-12-22

Downhole apparatus with packer cup and slip

#249
20110290486
2011-12-01

Well treatment device, method, and system

#250
20110284233
2011-11-24

Hydraulic actuation of a downhole tool assembly

#251
20110240301
2011-10-06

Indexing sleeve for single-trip, multi-stage fracing

#252
20110226491
2011-09-22

Downhole tool of high pressure operating cycle capability

#253
20110198082
2011-08-18

Downhole tool assembly with debris relief, and method for using same

#254
20110180270
2011-07-28

Position retention mechanism for maintaining a counter mechanism in an activated position

#255
20110132594
2011-06-09

Gripping tool

#256
20110127030
2011-06-02

Lockable anchor for insertable progressing cavity pump

#257
20110120773
2011-05-26

Switchable circulating tool

#258
20110120726
2011-05-26

Multi-position valve for fracturing and sand control and associated completion methods

#259
20110114324
2011-05-19

Modular hydraulic operator for a subterranean tool

#260
20110088914
2011-04-21

Method of activating a downhole tool assembly

#261
20110083857
2011-04-14

Repeatable, compression set downhole bypass valve

#262
20110079393
2011-04-07

Circulation control valve and associated method

#263
20110067886
2011-03-24

Inflow control device and methods for using same

#264
20110048806
2011-03-03

Apparatus and methods for controlling bottomhole assembly temperature during a pause in drilling boreholes

#265
20110048802
2011-03-03

Method and apparatus for controlling bottomhole temperature in deviated wells

#266
20110042105
2011-02-24

Zero backlash downhole setting tool and method

#267
20110030975
2011-02-10

Tubular system with selectively engagable sleeves and method

#268
20110011597
2011-01-20

Tubular valve system and method

#269
20110005763
2011-01-13

Subterranean valve operated by string relative movement

#270
20100294515
2010-11-25

SELECTIVE PLUG AND METHOD

#271
20100294514
2010-11-25

SELECTIVE PLUG AND METHOD

#272
20100270034
2010-10-28

Wired multi-opening circulating sub

#273
20100252281
2010-10-07

Downhole flow control tool and method

#274
20100252276
2010-10-07

Circulation sub with indexing mechanism

#275
20100236787
2010-09-23

Well Release System and Method

#276
20100206579
2010-08-19

Fail as is mechanism and method

#277
20100200298
2010-08-12

Downhole tool

#278
20100200245
2010-08-12

Hydraulic lockout device for pressure controlled well tools

#279
20100155081
2010-06-24

Fluid actuated circulating sub

#280
20100155052
2010-06-24

Downhole tool and running tool system for retrievably setting a downhole tool at locations within a well bore

#281
20100132957
2010-06-03

DOWNHOLE SHAPE MEMORY ALLOY ACTUATOR AND METHOD

#282
20100132954
2010-06-03

Ball seat assembly and method of controlling fluid flow through a hollow body

#283
20100101807
2010-04-29

Downhole apparatus with packer cup and slip

#284
20100044056
2010-02-25

Method of activating a downhole tool assembly

#285
20090321078
2009-12-31

Method for reduction of control lines to operate a multi-zone completion

#286
20090308588
2009-12-17

Method and Apparatus for Exposing a Servicing Apparatus to Multiple Formation Zones

#287
20090294133
2009-12-03

Injection Apparatus and Method

#288
20090218102
2009-09-03

Multi-cycle single line switch

#289
20090194275
2009-08-06

Methods of retrieving data from a pipe conveyed well logging assembly

#290
20090194271
2009-08-06

Carrier assembly for a pipe conveyed well logging assembly

#291
20090194270
2009-08-06

Latchable carrier assembly for pipe conveyed well logging

#292
20090183921
2009-07-23

Flow operated orienter and method of directional drilling using the flow operated orienter

#293
20090173541
2009-07-09

Rotary steerable tool

#294
20090166044
2009-07-02

Selectively activated float equipment

#295
20090159290
2009-06-25

Controller for a hydraulically operated downhole tool

#296
20090126936
2009-05-21

Actuating mechanism

#297
20090120645
2009-05-14

System and method for forming cavities in a well

#298
20090095486
2009-04-16

Circulation control valve and associated method

#299
20090095463
2009-04-16

Circulation control valve and associated method

#300
20090071658
2009-03-19

Valve