ClassID:

135330

E21B17/18 - CPC Classification

Classification description:

Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings Cables; ; Tubings Pipes provided with plural fluid passages

Recent Application in this class:
#1
20260139555
2026-05-21

METHODS AND SYSTEMS ASSOCIATED WITH EXTENDED FLUID DISTRIBUTION WITH A LINE THAT BYPASSES PUMPING UNITS

#2
20250283400
2025-09-11

MULTI-STAGE, LIMITED ENTRY DOWNHOLE GAS SEPARATOR

#3
20250230721
2025-07-17

DRILL STRING AND COMPONENTS THEREFOR

#4
20250179876
2025-06-05

Downhole Reamer with Rotating Sleeve

#5
20250146368
2025-05-08

Subsea Umbilicals

#6
20250059848
2025-02-20

SYSTEM AND METHODOLOGY FOR BYPASSING THROUGH AN EXPANDABLE METAL PACKER

#7
20240410236
2024-12-12

One-piece production/annulus bore stab with integral flow paths

#8
20240376788
2024-11-14

DUAL TUBE DRILL STRING COMPONENTS

#9
20240360725
2024-10-31

DRILL BIT FOR USE WITH INTENSIFIED FLUID PRESSURES

#10
20240309704
2024-09-19

DRILL STRING-CONNECTED PROTECTION FROM BOREHOLE PULSATION ENERGIES

#11
20240167370
2024-05-23

Method and Devices for Unloading Flow Conduits and Improving Multi-Phase Flow Capacity

#12
20240076960
2024-03-07

Multilateral junction including a non-threaded-coupling

#13
20240052703
2024-02-15

PERCUSSION DRILLING APPARATUS AND METHOD (WITH CHANNELS)

#14
20240044232
2024-02-08

System and method for enhanced geothermal energy extraction

#15
20230383645
2023-11-30

Double-layered wellbore tubular assembly

#16
20230340874
2023-10-26

Acoustic telemetry tool for high mechanical loading

#17
20230313661
2023-10-05

ESP blanking plug with sand trap

#18
20230304382
2023-09-28

MULTILATERAL JUNCTION HAVING EXPANDING METAL SEALED AND ANCHORED JOINTS

#19
20230304365
2023-09-28

One-piece production/annulus bore stab with integral flow paths

#20
20230235647
2023-07-27

MULTILATERAL JUNCTION WITH TWISTED MAINBORE AND LATERAL BORE LEGS

#21
20230228175
2023-07-20

Multi-trip wellbore completion system with a service string

#22
20230193701
2023-06-22

Dual pipe drill head quick interchange joint

#23
20230175335
2023-06-08

Gauge cutter and sampler apparatus

#24
20230167689
2023-06-01

FIXED CUTTER DRILL BIT WITH HIGH FLUID PRESSURES

#25
20230160263
2023-05-25

Method and system for directional drilling

#26
20230147178
2023-05-11

High ratio reamer

#27
20230097242
2023-03-30

Drill bit for use with intensified fluid pressures

#28
20230087720
2023-03-23

Fluid storage and production

#29
20230023872
2023-01-26

IMPROVEMENT RELATING TO DRILL RODS

#30
20230022591
2023-01-26

Swivel Apparatus For Fixed Casing Ram

#31
20230012112
2023-01-12

Ejector manifold and subsurface process to harvest low-pressure natural gas

#32
20230003088
2023-01-05

One-piece production/annulus bore stab with integral flow paths

#33
20220389762
2022-12-08

Mill, downhole tool with mill, method and system

#34
20220341293
2022-10-27

Multilateral junction including articulating structure

#35
20220316277
2022-10-06

Projectile drilling system

#36
20220275693
2022-09-01

Subsea Umbilicals

#37
20220243540
2022-08-04

Double-channel fluid injection apparatus

#38
20220205341
2022-06-30

Multilateral junction having expanding metal sealed and anchored joints

#39
20220205324
2022-06-30

Drill string-connected protection from borehole pulsation energies

#40
20220195817
2022-06-23

Alternate path for borehole junction

#41
20220154552
2022-05-19

Rupture apparatus

#42
20220136347
2022-05-05

Drill pipe with internal flow check valve

#43
20220136338
2022-05-05

Horizontal directional drill string having dual fluid paths

#44
20220120145
2022-04-21

Dual pipe drill head quick interchange joint

#45
20220106843
2022-04-07

One-piece production/annulus bore stab with integral flow paths

#46
20220034175
2022-02-03

One-piece production/annulus bore stab with integral flow paths

#47
20220025716
2022-01-27

Breech lock connection for drilling riser auxiliary line

#48
20220018230
2022-01-20

Heating of subsea pipelines

#49
20210404311
2021-12-30

Multi-Stage, Limited Entry Downhole Gas Separator

#50
20210388681
2021-12-16

Multi-flow compaction/expansion joint

#51
20210381324
2021-12-09

Tubular for downhole use, a downhole tubular system and method of forming a fluid passageway at a tubular for downhole use

#52
20210277721
2021-09-09

Fixed cutter drill bit with high fluid pressures

#53
20210230947
2021-07-29

Completion systems and methods to perform completion operations

#54
20210222531
2021-07-22

Electronic control for simultaneous injection and production

#55
20210222501
2021-07-22

Vacuum Manifold Assembly

#56
20210189802
2021-06-24

Dual rod directional drilling system

#57
20210172306
2021-06-10

Downhole tool with a releasable shroud at a downhole tip thereof

#58
20210172293
2021-06-10

HIGH-PRESSURE MULTILATERAL JUNCTION WITH MAINBORE AND LATERAL ACCESS AND CONTROL

#59
20210172292
2021-06-10

Multilateral junction with twisted mainbore and lateral bore legs

#60
20210172265
2021-06-10

Unitary lateral leg with three or more openings

#61
20210140245
2021-05-13

Drill bit for use with intensified fluid pressures

#62
20210123327
2021-04-29

System and methodology for high pressure alternate path

#63
20210108477
2021-04-15

High ratio reamer

#64
20210108129
2021-04-15

Energized natural gas foam delivery devices and methods

#65
20210087929
2021-03-25

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

#66
20210087891
2021-03-25

Concentric pipe systems and methods

#67
20210080019
2021-03-18

Mechanisms and methods for closure of a flow control device

#68
20210062590
2021-03-04

Drilling system with circulation sub

#69
20210054721
2021-02-25

In-situ heating fluids with electromagnetic radiation

#70
20210054697
2021-02-25

Capillary tubing for downhole fluid loss repair

#71
20210047891
2021-02-18

Drill rod with internal fluid bypass porting

#72
20210032943
2021-02-04

Composite dual channel drill pipes and method of manufacture

#73
20200392802
2020-12-17

Multi-component downhole treatment

#74
20200370382
2020-11-26

Steam and inflow control for SAGD wells

#75
20200370376
2020-11-26

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

#76
20200362660
2020-11-19

System and methodology for providing bypass through a swellable packer

#77
20200362635
2020-11-19

Dual rod directional drilling system

#78
20200325735
2020-10-15

Drill pipe, and system and method for laying a pipeline

#79
20200318457
2020-10-08

Tubing assembly for hydraulic shifting of sleeve without tool movement

#80
20200318452
2020-10-08

Wellhead adaptor for dual concentric tubing for well operations

#81
20200318442
2020-10-08

One-piece production/annulus bore stab with integral flow paths

#82
20200300040
2020-09-24

Dual rod directional drilling system

#83
20200291762
2020-09-17

Multi-stage, limited entry downhole gas separator

#84
20200284103
2020-09-10

Method of manufacturing a side pocket mandrel body

#85
20200270969
2020-08-27

Lateral tubing support of a multi-lateral junction assembly

#86
20200256134
2020-08-13

Side pocket mandrel with enhanced pressure rating

#87
20200232288
2020-07-23

Cable feeder and drill rig

#88
20200131852
2020-04-30

Rotary steerable drill string

#89
20200102811
2020-04-02

Chemical deployment modular system and method of use

#90
20200087988
2020-03-19

Slider compensated flexible shaft drilling system

#91
20200056432
2020-02-20

Non-stop circulation system for maintaining bottom hole pressure

#92
20200040710
2020-02-06

Device and method for solid-state fluidized mining of natural gas hydrates in shallow seabed

#93
20200040669
2020-02-06

Methods and systems for reducing drag and friction during drilling

#94
20200040668
2020-02-06

Dual pipe drill head quick interchange joint

#95
20200024910
2020-01-23

Method and device to supply liquid to a drill pipe

#96
20190368272
2019-12-05

Pneumatic drilling with packer slideable along stem drill rod

#97
20190352975
2019-11-21

Horizontal directional drill string having dual fluid paths

#98
20190316719
2019-10-17

Apparatus for connecting wellsite tubing

#99
20190277095
2019-09-12

Concentric pipe systems and methods

#100
20190257162
2019-08-22

Mitigating drilling circulation loss

#101
20190178060
2019-06-13

Multi-bore jumper interface

#102
20190178056
2019-06-13

In-situ heating fluids with electromagnetic radiation

#103
20190145190
2019-05-16

In-situ injection of soil and groundwater—high pressure rotary jet grouting in-situ remediation system and method

#104
20190136630
2019-05-09

Dual member pipe joint for a dual member drill string

#105
20190128094
2019-05-02

Fluid placement tool

#106
20190112895
2019-04-18

Tubing assembly for hydraulic shifting of sleeve without tool movement

#107
20190112879
2019-04-18

DRILL PIPE, AND SYSTEM AND METHOD FOR LAYING A PIPELINE

#108
20190085679
2019-03-21

Rod pump gas anchor and separator for horizontal wells and method of use

#109
20190085640
2019-03-21

Drilling tool for sinking automatically directionally monitored bores

#110
20190071935
2019-03-07

Methods and systems for reducing drag and friction during drilling

#111
20190048716
2019-02-14

Downhole tool with multiple welded section

#112
20190048685
2019-02-14

In-situ heating fluids with electromagnetic radiation

#113
20190032426
2019-01-31

Pressure equalization apparatus and associated systems and methods

#114
20190024475
2019-01-24

Bypass assembly for production packer

#115
20180371888
2018-12-27

Subsea processing of well fluids

#116
20180340381
2018-11-29

Mitigating drilling circulation loss

#117
20180320452
2018-11-08

One piece forged fluidic displacement drill pipe and method of manufacture thereof

#118
20180313171
2018-11-01

Dual rod directional drilling system

#119
20180313169
2018-11-01

Dual rod directional drilling system

#120
20180313157
2018-11-01

Dual rod directional drilling system

#121
20180298730
2018-10-18

Shroud assembly

#122
20180252081
2018-09-06

In-situ replacement of fluids in a well tool

#123
20180209222
2018-07-26

Double wall pipe connection system

#124
20180202241
2018-07-19

Sensorless manifold assembly with pressure-based reversing fluid circuit

#125
20180187496
2018-07-05

Drill pipe

#126
20180171740
2018-06-21

Dual Bore Swell Packer

#127
20180155988
2018-06-07

METHOD OF DRILLING A BOREHOLE IN AN EARTH FORMATION

#128
20180119516
2018-05-03

Fluid flow control systems and methods

#129
20180094515
2018-04-05

Downhole pumping systems and intakes for same

#130
20180051525
2018-02-22

Dual member pipe joint for a dual member drill string

#131
20180044991
2018-02-15

Dual circulation fluid hammer drilling system

#132
20180038170
2018-02-08

Double drill rod section, double drill rod length and method of producing an electrically conductive connection in a double drill rod section

#133
20180038164
2018-02-08

Actuator controlled variable flow area stator for flow splitting in down-hole tools

#134
20180023351
2018-01-25

Increasing hydrocarbon recovery from reservoirs

#135
20180010436
2018-01-11

Device for discharging liquids accumulated in a well

#136
20180002989
2018-01-04

Shunt system with shroud secured by a locking member

#137
20170362907
2017-12-21

System and method to install velocity string

#138
20170335661
2017-11-23

Modular nozzle inflow control device with autonomy and flow bias

#139
20170306709
2017-10-26

Sub for accommodating large devices

#140
20170275958
2017-09-28

Hydraulic drilling apparatus intended to drill boreholes

#141
20170254178
2017-09-07

Dual coiled tubing head

#142
20170241216
2017-08-24

Method of manufacturing a side pocket mandrel body

#143
20170241212
2017-08-24

Marine riser section for subsea wellbore related operations

#144
20170234096
2017-08-17

Inner drilling riser tie-back connector seal

#145
20170218735
2017-08-03

Longitudinally offset partial areas screens for well assembly

#146
20170191355
2017-07-06

TWO-STEP ARTIFICIAL LIFT SYSTEM AND METHOD

#147
20170191345
2017-07-06

Method of sealing a fracture in a wellbore and sealing system

#148
20170145757
2017-05-25

Multi-flow pipe and pipe couplings therefor for use in fracture flow hydrocarbon recovery processes

#149
20170138158
2017-05-18

Completion system for gravel packing with zonal isolation

#150
20170138133
2017-05-18

Earth boring systems and methods with integral debris removal

#151
20170130537
2017-05-11

Wellbore operations using a multi-tube system

#152
20170130531
2017-05-11

Projectile drilling system

#153
20170089187
2017-03-30

Thermal energy delivery and oil production arrangements and methods thereof

#154
20170074428
2017-03-16

Provision of predetermined fluid

#155
20170074052
2017-03-16

Riser pipe section equipped with a locking ring arranged between the main tube and the auxiliary line

#156
20170058647
2017-03-02

Tubing system having alternate path

#157
20170044846
2017-02-16

Surface Heating System for Tubing or Piping

#158
20170016311
2017-01-19

DOWNHOLE GAS SEPARATOR APPARATUS

#159
20160329648
2016-11-10

Transmission line segment coupler defining fluid passage ways and related methods

#160
20160290133
2016-10-06

Downhole sensor for formation fluid property measurement

#161
20160290079
2016-10-06

Deflector assembly for a lateral wellbore

#162
20160273312
2016-09-22

Multilateral junction with mechanical stiffeners

#163
20160265318
2016-09-15

Flow distribution assemblies incorporating shunt tubes and screens and method of use

#164
20160265288
2016-09-15

Devices and methods for controlling a multi-channel system in a petroleum well

#165
20160251942
2016-09-01

Multilateral junction with mechanical stiffeners

#166
20160251919
2016-09-01

Systems and methods for killing a well

#167
20160251913
2016-09-01

Jumper tube locking assembly and method

#168
20160251909
2016-09-01

Casing window assembly

#169
20160245025
2016-08-25

Dual-member pipe assembly

#170
20160230485
2016-08-11

Drill rod for percussion drill tool

#171
20160215570
2016-07-28

Jumper Connection for Shunt Tubes on Wellscreen Assembly

#172
20160208586
2016-07-21

SYSTEM AND METHODOLOGY FOR RUNNING CASING STRINGS THROUGH A CONDUCTOR TUBE

#173
20160201410
2016-07-14

Drilling apparatus and methods for reducing circulation loss

#174
20160168916
2016-06-16

Apparatus for drilling deeper and wider well bore with casing

#175
20160160580
2016-06-09

Annular flow control devices and methods of use

#176
20160153252
2016-06-02

Deflector assembly for a lateral wellbore

#177
20160138397
2016-05-19

ANCHORING AND ANTI-CLOGGING DRILL ROD FOR COAL MINE FLOOR

#178
20160138345
2016-05-19

Riser system

#179
20160130927
2016-05-12

Methods, apparatus and products for production of fluids from subterranean formations

#180
20160130914
2016-05-12

Mainbore clean out tool

#181
20160108686
2016-04-21

Dual circulation drilling system

#182
20160108682
2016-04-21

Casing window assembly

#183
20160069145
2016-03-10

Utilizing dissolvable metal for activating expansion and contraction joints

#184
20160061016
2016-03-03

Hydraulic fracturing system and method

#185
20160053550
2016-02-25

Drill head

#186
20160047179
2016-02-18

INCREASING HYDROCARBON RECOVERY FROM RESERVOIRS

#187
20160032661
2016-02-04

Adjustable conduit

#188
20150368978
2015-12-24

Powered reaming device

#189
20150361746
2015-12-17

Two phase mud flow usage with dual-string drilling system

#190
20150354317
2015-12-10

Wellbore strings containing annular flow valves and methods of use thereof

#191
20150345275
2015-12-03

Subsea processing of well fluids

#192
20150337610
2015-11-26

Methods and systems for performance of subterranean operations using dual string pipes

#193
20150330158
2015-11-19

APPARATUSES, SYSTEMS, AND METHODS FOR INJECTING FLUIDS INTO A SUBTERRANEAN FORMATION

#194
20150322730
2015-11-12

Merlin drilling riser assembly

#195
20150315889
2015-11-05

APPARATUS AND METHOD FOR DOWNHOLE STEAM GENERATION AND ENHANCED OIL RECOVERY

#196
20150308248
2015-10-29

Device and method for obtaining, especially in situ, a carbonaceous substance from an underground deposit

#197
20150275587
2015-10-01

Non-threaded tubular connection

#198
20150267519
2015-09-24

Artificial lift system

#199
20150267518
2015-09-24

Isolation packer with automatically closing alternate path passages

#200
20150267517
2015-09-24

Isolation packer with automatically closing alternate path passages

#201
20150252639
2015-09-10

Drilling and grouting method and apparatus

#202
20150247390
2015-09-03

System and method for production of reservoir fluids

#203
20150240598
2015-08-27

System for multi-zone well test/production and method of use

#204
20150240572
2015-08-27

Shunt tube connector assembly and method

#205
20150233192
2015-08-20

Dual member pipe joint for a dual member drill string

#206
20150233191
2015-08-20

Pressure equalization apparatus and associated systems and methods

#207
20150233190
2015-08-20

Multilateral Y-block system

#208
20150233189
2015-08-20

Resisting collapse of downhole tools

#209
20150226048
2015-08-13

Downhole injection assembly having an annular orifice

#210
20150226029
2015-08-13

GROUT DELIVERY

#211
20150226017
2015-08-13

Drilling assembly

#212
20150226016
2015-08-13

Core barrel and related drilling apparatus and method

#213
20150218909
2015-08-06

Downhole flow control, joint assembly and method

#214
20150198016
2015-07-16

System and methodology for forming gravel packs

#215
20150184474
2015-07-02

Adjustable bullnose assembly for use with a wellbore deflector assembly

#216
20150176353
2015-06-25

Bore selection apparatus

#217
20150159461
2015-06-11

System for containment, measurement, and reuse of fluids in hydraulic fracturing

#218
20150158196
2015-06-11

Non-Linear Slotting Profiles for Pipe and Pipe Liners

#219
20150152717
2015-06-04

Casing window assembly

#220
20150144360
2015-05-28

Drill element and associated equipment and methods

#221
20150136492
2015-05-21

Dual circulation drilling system

#222
20150122478
2015-05-07

Modular connector

#223
20150101794
2015-04-16

HYDROCARBON PRODUCTION APPARATUS

#224
20150068773
2015-03-12

Dual-flow valve assembly

#225
20150053406
2015-02-26

Pre-tensing sections of concentric tubulars

#226
20150047852
2015-02-19

Installation comprising seabed-to-surface connections of the multi-riser hybrid tower type, including positive-buoyancy flexible pipes

#227
20150041213
2015-02-12

Gas injection while drilling

#228
20150028168
2015-01-29

Multi-Conduit Coiled Tubing Assembly

#229
20150027691
2015-01-29

Gas lift assembly

#230
20150013985
2015-01-15

Apparatus for recovering hydrocarbon resources including ferrofluid source and related methods

#231
20150000929
2015-01-01

Method for producing hydrocarbon gas from a wellbore and valve assembly

#232
20140374117
2014-12-25

Methods and Means for Installing, Maintaining and Controlling a Self-Standing Riser System

#233
20140345872
2014-11-27

Laser assisted system for controlling deep water drilling emergency situations

#234
20140326502
2014-11-06

Merlin drilling riser assembly

#235
20140326447
2014-11-06

PERFORATED PIPE AND APPARATUS, SYSTEM AND METHOD FOR PERFORATING A PIPE

#236
20140318803
2014-10-30

Riser system for transporting a slurry from a position adjacent to the seabed to a position adjacent to the sea surface

#237
20140284111
2014-09-25

Horizontal directional drilling system

#238
20140224510
2014-08-14

Casing window assembly

#239
20140216714
2014-08-07

Transmission line segment coupler defining fluid passage ways and related methods

#240
20140158433
2014-06-12

Valve assembly

#241
20140151052
2014-06-05

KOBE SUB WITH INFLOW CONTROL, WELLBORE TUBING STRING AND METHOD

#242
20140144706
2014-05-29

Rotating continuous flow sub

#243
20140131107
2014-05-15

Device and method usable in well drilling and other well operations

#244
20140102720
2014-04-17

Permeability Modification

#245
20140076582
2014-03-20

TOOL STRING

#246
20140060846
2014-03-06

Downhole casing system

#247
20140041890
2014-02-13

RF coaxial transmission line for a wellbore including dual-wall outer conductor and related methods

#248
20140027184
2014-01-30

Dual-member pipe joint for a dual-member drill string

#249
20140008079
2014-01-09

Valve arrangement for a production pipe

#250
20140000914
2014-01-02

High pressure multibore junction assembly

#251
20140000905
2014-01-02

Method and apparatus for injecting gas into a reservoir

#252
20130306324
2013-11-21

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

#253
20130299180
2013-11-14

Systems and methods for managing pressures in casing annuli of subterranean wells

#254
20130299164
2013-11-14

Systems and methods for advanced well access to subterranean formations

#255
20130284519
2013-10-31

Gravity based fluid trap

#256
20130264067
2013-10-10

Downhole Draw-Down Pump and Method

#257
20130255968
2013-10-03

Casing window assembly

#258
20130255943
2013-10-03

Crossover joint for connecting eccentric flow paths to concentric flow paths

#259
20130240215
2013-09-19

Downhole multiple well

#260
20130206413
2013-08-15

Gas evolving oil viscosity diminishing compositions for stimulating the productive layer of an oil reservoir

#261
20130192831
2013-08-01

Device and method for the recovery, in particular in-situ recovery, of a carbonaceous substance from subterranean formations

#262
20130181439
2013-07-18

Seal assembly for nested dual drill pipe

#263
20130181438
2013-07-18

Structure for a nested dual drill pipe joint

#264
20130140087
2013-06-06

Dual pipe rod assembly section, horizontal drilling device and probe housing

#265
20130133953
2013-05-30

REVERSE CIRCULATION DRILLING SYSTEM, APPARATUS AND METHOD

#266
20130126187
2013-05-23

Entry tube system

#267
20130098605
2013-04-25

Systems and methods for killing a well

#268
20130087389
2013-04-11

Fluid partition unit

#269
20130081806
2013-04-04

Debris resistant internal tubular testing system

#270
20130068490
2013-03-21

Two pipe horizontal directional drilling system

#271
20130068473
2013-03-21

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

#272
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Methods and systems for circulating fluid within the annulus of a flexible pipe riser

#273
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2013-03-21

Methods, systems and apparatus for circulating fluid within the annulus of a flexible pipe riser

#274
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2013-02-21

Riser system

#275
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2013-02-21

Manifold string for selectivity controlling flowing fluid streams of varying velocities in wells from a single main bore

#276
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2013-02-07

Cooled-fluid systems and methods for pulsed-electric drilling

#277
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2013-02-07

Systems and methods for pulsed-flow pulsed-electric drilling

#278
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2013-01-10

CONTROL SYSTEM AND INTERFACE FOR A TUNNELING APPARATUS

#279
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2012-12-06

Completion of lateral bore with high pressure multibore junction assembly

#280
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Apparatus for drilling faster, deeper and wider well bore

#281
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2012-11-01

Core Barrel and Related Drilling Apparatus and Method

#282
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2012-10-18

Pressure equalization apparatus and associated systems and methods

#283
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2012-10-11

Dual pipe for increased fluid flow

#284
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Microtunnelling system and apparatus

#285
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2012-08-30

Laser assisted system for controlling deep water drilling emergency situations

#286
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2012-08-23

Apparatus and methods for well completion design to avoid erosion and high friction loss for power cable deployed electric submersible pump systems

#287
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2012-08-16

Plug connection and pipe section for a drill pipe

#288
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2012-07-05

Secondary flow path module, gravel packing system including the same, and method of assembly thereof

#289
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2012-05-24

Method and system for transferring signals through a drill pipe system

#290
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2012-03-01

Downhole Draw-Down Pump and Method

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2012-02-09

Downhole tool housing

#292
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2012-01-26

DRILL PIPE

#293
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2012-01-05

Device and method for improving liquid removal from gas, condensate and oil wells when using a multi-channel system

#294
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2011-11-17

System and method for production of reservoir fluids

#295
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2011-11-03

Latching configuration for a microtunneling apparatus

#296
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2011-10-06

SYSTEM AND METHOD FOR DEPLOYING OPTICAL FIBER

#297
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2011-09-08

Universal drilling and completion system

#298
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2011-08-25

Apparatus and methods for forming and using subterranean salt cavern

#299
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2011-08-25

Gas evolving oil viscosity diminishing compositions for stimulating the productive layer of an oil reservoir

#300
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2011-07-28

STATOR FOR USE IN HELICOIDAL MOTOR