Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 41 - Equipment or details not covered by groups
Patents for E21B 41 - Equipment or details not covered by groups (7,984)
10/2000
10/26/2000WO2000063528A1 Dual diverter and orientation device for multilateral completions and method
10/24/2000US6137028 Drilling pair of wells which intersect in salt formation, providing slurry containing naturally occuring radioactive material wastes and carrier liquid; injecting slurry into salt formation wherein wastes settle; removing carrier liquid
10/24/2000US6135373 Rotary grinder
10/24/2000US6135210 Well completion system employing multiple fluid flow paths
10/24/2000US6135208 Expandable wellbore junction
10/24/2000US6135206 Apparatus for completing a subterranean well and associated methods of using same
10/17/2000US6131673 Method of assaying downhole occurrences and conditions
10/17/2000US6131657 Method for preventing or inhibiting metal deposition
10/12/2000WO2000017485A8 Device for equipment adapted for waste product injection usage, i.e. cuttings or other environmentally toxic liquids
10/11/2000EP1042587A4 System for drilling and completing multilateral wells
10/11/2000EP1042587A1 System for drilling and completing multilateral wells
10/04/2000EP1041244A2 Methods of downhole testing subterranean formations and associated apparatus therefor
10/04/2000CN2399508Y Wheel type pigging machine
10/03/2000US6126872 Shell-core polymers
10/03/2000US6125937 Methods of completing a subterranean well and associated apparatus
09/2000
09/28/2000WO2000056478A1 Portable torque tester for downhole motors
09/28/2000CA2368175A1 Portable torque tester for downhole motors
09/27/2000EP1038089A1 Anchoring mechanism for a guide post
09/26/2000US6123150 Branch boreholes
09/19/2000US6119771 Sealed lateral wellbore junction assembled downhole
09/19/2000CA2024866C Apparatus and facility for the cleaning of drains, particularly in an oil well
09/14/2000WO2000054028A1 System and method for monitoring corrosion in oilfield wells and pipelines utilizing time-domain-reflectometry
09/14/2000WO2000054009A2 Downhole depth correlation
09/14/2000WO2000053887A2 Wellbore primary barrier and related systems
09/13/2000EP0811110B1 Oil well treatment
09/13/2000CN2396177Y Portable brake
09/12/2000US6116344 Apparatus for completing a subterranean well and associated methods of using same
09/12/2000CA2143349C Flow control sub for hydraulic expanding downhole tools
09/06/2000CN1265636A Method for inhibiting biogenic sulfide generation
09/05/2000US6114857 System and method for monitoring corrosion in oilfield wells and pipelines utilizing time-domain-reflectometry
09/05/2000US6113061 Method and apparatus for replacing a packer element
09/05/2000US6112809 Downhole tools with a mobility device
08/2000
08/31/2000WO2000050737A1 Method and apparatus for determining potential interfacial severity for a formation
08/31/2000WO2000050735A1 Method and apparatus for determining potential abrasivity in a wellbore
08/31/2000WO2000050733A1 Internal junction reinforcement
08/31/2000WO2000050728A1 Method and apparatus for determining potential for drill bit performance
08/30/2000CN1265172A Creating zonal isolation between interior and exterior of well system
08/29/2000US6112126 Adaptive object-oriented optimization software system
08/29/2000US6109368 Method and system for predicting performance of a drilling system for a given formation
08/29/2000US6109356 Well completion tool having pressure relief capability incorporated therein and associated method
08/24/2000WO2000049622A1 A waste processing system and related methods
08/22/2000US6105670 Injection/isolation tool
08/15/2000US6102310 System for homogenization of a slurry of segregated drill cuttings prior to injection into an earth formation comprising slurry tank with discharge port; conveyor; fluid injection line; transfer pump; and in-line micron grinder
08/15/2000US6102124 Flying lead workover interface system
08/10/2000WO2000046616A1 A method of saving a string of tools installed in an oil well, and a corresponding transmission assembly
08/10/2000WO2000046484A1 Method for creating secondary sidetracks in a well system
08/10/2000WO2000046479A1 Multilateral well and electrical transmission system
08/09/2000EP0988439A4 Casing annulus remediation system
08/08/2000US6100616 Electric submergible motor protector
08/08/2000US6098716 Releasable connector assembly for a perforating gun and method
08/01/2000US6096228 Apparatus and method for handling waste-C-I-P II
08/01/2000US6095262 Roller-cone bits, systems, drilling methods, and design methods with optimization of tooth orientation
07/2000
07/25/2000US6092610 Actively controlled rotary steerable system and method for drilling wells
07/25/2000US6092602 Sealed lateral wellbore junction assembled downhole
07/25/2000US6092601 Apparatus for completing a subterranean well and associated methods of using same
07/20/2000WO2000042287A1 Automated bore planning method and apparatus for horizontal directional drilling
07/20/2000WO2000041975A1 Method for reducing hydrogen sulfide level in water containing sulfate-reducing bacteria and hydrogen sulfide-metabolizing bacteria
07/20/2000WO2000024844A3 Treatments for cuttings from offshore rigs
07/20/2000CA2361240A1 Automated bore planning method and apparatus for horizontal directional drilling
07/19/2000EP0836751B1 Thermoelectric generator
07/18/2000US6089320 Apparatus and method for lateral wellbore completion
07/13/2000WO2000040833A1 Drill pipe protector assembly
07/11/2000US6086650 Choke trim component; contains, in wt %, 2.5-4.5 (co+ni) with a weight ratio co/ni of about 3, 0.25-0.6 cr and 0.1 mo wherein essentially all of the wc grains have a size <1 mum
07/06/2000WO2000039412A2 A casing for noise attenuation in a rock drilling rig and an arrangement in conjunction with a rock drilling rig
07/05/2000EP1015730A4 Oil and gas well cuttings disposal system with continuous vacuum operation for sequentially filling disposal tanks
07/05/2000EP1015730A1 Oil and gas well cuttings disposal system with continuous vacuum operation for sequentially filling disposal tanks
07/05/2000EP1015388A1 Method for inhibiting biogenic sulfide generation
07/04/2000US6082456 Using curable liquid containing prepolymer of unsaturated polyester or epoxy-vinyl ester and vinyl-containing monomer
06/2000
06/29/2000WO2000037770A1 Closed loop chemical injection and monitoring system for oilfield operations
06/28/2000EP1012441A1 Apparatus and method for installing a branch junction from a main well
06/28/2000EP1000219A4 A method of injecting drilling waste into a well while drilling
06/27/2000US6079504 Underground mining drill rig with safety interlock
06/27/2000US6079495 Method for establishing branch wells at a node of a parent well
06/27/2000US6079494 Methods of completing and producing a subterranean well and associated apparatus
06/27/2000US6079493 Methods of completing a subterranean well and associated apparatus
06/27/2000US6079490 Remotely accessible mobile repair unit for wells
06/27/2000US6079488 Lateral liner tieback assembly
06/27/2000CA2166265C Method and apparatus for preventing environmental contamination due to fluid leakage from a wellhead
06/22/2000WO2000036268A1 A fluid-driven alternator having an internal impeller
06/22/2000CA2355606A1 A fluid-driven alternator having an internal impeller
06/20/2000US6077342 Single crystal formed by the czochralski method and having a crystallographic axis as a pulling direction set within an angle range of 30 degrees from a b-axis (010) direction; substrate for uniform gallium nitride semiconductor thin film
06/18/2000CA2686627A1 Electrically sequenced tractor
06/08/2000WO2000033108A1 High-power well logging method and apparatus
06/08/2000WO2000012860A3 Roller-cone bits, systems, drilling methods, and design methods with optimization of tooth orientation
06/08/2000WO2000012859A3 Force-balanced roller-cone bits, systems, drilling methods, and design methods
06/07/2000EP0900320A4 System and method for placement and retrieval of a subsurface diverting tool used in drilling and completing wells
06/07/2000CN2381774Y Hydraulically controlled oil pay valve
06/06/2000US6070671 Creating zonal isolation between the interior and exterior of a well system
06/06/2000US6070665 Wellbore milling
06/02/2000WO2000031654A2 Apparatus and method of well management
06/02/2000WO2000031375A1 Lateral branch junction for well casing
06/02/2000CA2351728A1 Apparatus and method of well management
06/02/2000CA2351339A1 Lateral branch junction for well casing
05/2000
05/31/2000EP1004747A2 Intelligent downhole testing system
05/30/2000US6068056 Acid-treating a subterranean formation by injecting a well treatment fluid containing an acid, water, an aliphatic aldehyde an an aromatic aldehyde via a well bore into the formation
05/25/2000WO2000029713A2 Method and apparatus for connecting a lateral branch liner to a main well bore
05/25/2000WO2000028826A2 Oil well productivity stimulation
05/23/2000US6065550 Method and system for drilling and completing underbalanced multilateral wells utilizing a dual string technique in a live well
05/23/2000US6065543 Sealed lateral wellbore junction assembled downhole
05/23/2000US6065541 Cleaning device
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