| Patents for E21B 43 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells (64,186) |
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| 02/07/2002 | US20020014337 Apparatus and method for installing a water well pump |
| 02/07/2002 | US20020014333 Apparatus for establishing branch wells form a parent well |
| 02/07/2002 | US20020014332 Apparatus for establishing branch wells from a parent well |
| 02/07/2002 | US20020014268 Reciprocating pump standing head valve |
| 02/06/2002 | EP1178013A2 Apparatus for in-situ deep well cleaning of contaminated groundwater |
| 02/06/2002 | EP1075583A4 Shaped-charge liner |
| 02/06/2002 | CN2475850Y Adjustable high efficient energy-saving beam-pumping unit capable of automatic controlling single well, double well or multi-well location |
| 02/06/2002 | CN2475849Y Automatic pump-impacting device for underground oil-well pump |
| 02/06/2002 | CN2475848Y Rope hanging device for automatic batch rotary sucket rod |
| 02/06/2002 | CN2475830Y Intellectual controller for high-pressure gas injection of oil displacement |
| 02/06/2002 | CN2475829Y Oil well simulation device |
| 02/06/2002 | CN2475828Y Arc-shape reduced-diameter rotary wheel type beam pump unit with pendulum rod varied-distance balancing |
| 02/06/2002 | CN1334897A Method for removing condensables from natural gas stream |
| 02/06/2002 | CN1334896A Method for removing condensables from natural gas stream, at wellhead, downstream of wellhead choke |
| 02/06/2002 | CN1334755A Nozzle for supersonic gas flow and inertia separator |
| 02/05/2002 | US6343653 Chemical injector apparatus and method for oil well treatment |
| 02/05/2002 | US6343651 Apparatus and method for controlling fluid flow with sand control |
| 02/05/2002 | CA2216824C Method for accelerating production |
| 02/05/2002 | CA2092647C Tubing anchor catcher with rotating mandrel |
| 01/31/2002 | WO2002009231A2 Adaptive array antenna nulling |
| 01/31/2002 | WO2002008562A2 Combined liner and matrix system, use of the system and method for control and monitoring of processes in a well |
| 01/31/2002 | WO2001040614A3 Ceramic components for high pressure oil wells |
| 01/31/2002 | WO2000065196A9 Deliberate fluid removal by capillary imbibition |
| 01/31/2002 | US20020011357 Fluid drilling system with drill string and retro jets |
| 01/31/2002 | US20020011339 Through-tubing multilateral system |
| 01/31/2002 | US20020011337 Downhole gas compression |
| 01/31/2002 | US20020011334 Deformable gravel pack |
| 01/31/2002 | US20020011333 Subsurface measurement apparatus, system, and process for improved well drilling, control, and production |
| 01/30/2002 | EP1176126A2 Permeable cement sand screens in well bores |
| 01/30/2002 | EP0968354B1 Wellhead device for retaining the solid particles carried by the production fluid |
| 01/30/2002 | EP0897455B1 Manifold support mounting plate for oil extracting installation and method of installation |
| 01/30/2002 | CN2474721Y Eccentric water distributing apparatus |
| 01/30/2002 | CN2474720Y Long life sintered metal felt sand filtering tube |
| 01/30/2002 | CN2474719Y Composite type honeycomb net sand anchor |
| 01/30/2002 | CN2474718Y Sand preventing screen pipe |
| 01/30/2002 | CN2474717Y Pipeless screw pump oil extraction device |
| 01/30/2002 | CN1333858A Method and system for accessing substerranean deposits from the surface |
| 01/29/2002 | US6341572 Explosion prevention system for internal turret mooring system |
| 01/29/2002 | CA2045962C Liner hanger assembly |
| 01/28/2002 | CA2354209A1 Methods and compositions for forming permeable cement sand screens in well bores |
| 01/24/2002 | WO2002006677A1 Multi-stage liquid elevator |
| 01/24/2002 | WO2002006629A1 Method for treating multiple wellbore intervals |
| 01/24/2002 | WO2002006593A1 Sand screen with integrated sensors |
| 01/24/2002 | WO2001065049A3 Cavitating jet |
| 01/24/2002 | US20020009336 Connection system for catenary riser |
| 01/24/2002 | US20020007968 Method and system for hydraulic friction controlled drilling and completing geopressured wells utilizing concentric drill strings |
| 01/24/2002 | US20020007953 Method and apparatus for removing water from well-bore of gas wells to permit efficient production of gas |
| 01/24/2002 | US20020007952 Cable actuated downhole smart pump |
| 01/24/2002 | US20020007949 Method for treating multiple wellbore intervals |
| 01/24/2002 | US20020007948 Method of providing hydraulic/fiber conduits adjacent bottom hole assemblies for multi-step completions |
| 01/23/2002 | EP1173655A1 Ribbed sealing element and method of use |
| 01/23/2002 | CN2473358Y Oil pump capable of leaking and filling |
| 01/23/2002 | CN2473357Y Multiple rod linear oil pump unit |
| 01/23/2002 | CN2473334Y Picking and filling polymer pump station for oil field |
| 01/23/2002 | CN2473333Y Expandable sand screen tube |
| 01/23/2002 | CN2473332Y Self powered vibration filling tool |
| 01/22/2002 | US6340373 Process for recovering and treating of aqueous solutions |
| 01/22/2002 | US6340057 Connection device |
| 01/22/2002 | CA2146096C Thermal dispersion probe |
| 01/22/2002 | CA2033358C Method and device for stimulating an underground zone by deffered injection of fluid coming from a surrounding zone along fractures made from a drain bored in a intermediate layerof low permeability |
| 01/20/2002 | CA2353285A1 Spiral phase capsule gun assembly utilizing a non-spiral strip |
| 01/18/2002 | CA2313617A1 Method and apparatus for de-watering producing gas wells |
| 01/17/2002 | WO2002004785A1 Well management system |
| 01/17/2002 | WO2002004783A1 Deformable member |
| 01/17/2002 | WO2001074473B1 Method and apparatus for processing fluids produced from an offshore wellbore |
| 01/17/2002 | WO2001057359A3 Apparatus and method for moving fluid |
| 01/17/2002 | US20020005346 Method and apparatus for extracting hydrocarbons from tar sands using electro plasma |
| 01/17/2002 | US20020005285 Multi-stage liquid elevator |
| 01/17/2002 | US20020005283 Multi-stage liquid elevator |
| 01/16/2002 | EP1171687A1 Method and system for increasing oil production from an oil well producing a mixture of oil and gas |
| 01/16/2002 | EP1171686A1 Carbon dioxide pump and pumping system |
| 01/16/2002 | CN2471968Y Elastic metal sealer plunger assembly |
| 01/16/2002 | CN2471967Y Annular carbide valve for oil sucking pump |
| 01/16/2002 | CN2471966Y Hydraulic compensated sandproof oil sucking pump |
| 01/16/2002 | CN2471930Y Underground oil gas separator |
| 01/16/2002 | CN2471929Y Underground choke and fishing tool therefor |
| 01/16/2002 | CN2471928Y Bodyless multi-position bullet rack |
| 01/15/2002 | US6338388 Load bearing pump rotor tag bar |
| 01/15/2002 | US6338386 Rehabilitation of landfill gas recovery wells |
| 01/15/2002 | US6338385 Retrievable downhole adjustable choke |
| 01/15/2002 | CA2244593C Dual stage rotary screw pump tool and method of pump flushing |
| 01/15/2002 | CA2228157C Self-aligning stuffing box for pumpjack units |
| 01/10/2002 | WO2002002947A1 Isolation container for a downhole electric pump |
| 01/10/2002 | WO2002002908A1 Apparatus and method for downhole fluid separation |
| 01/10/2002 | WO2002002900A2 Apparatus and method to complete a multilateral junction |
| 01/10/2002 | WO2001094748A8 Fluid powered subterranean pump system |
| 01/10/2002 | WO2001034940A3 Method and system for suppressing and controlling slug flow in a multi-phase fluid stream |
| 01/10/2002 | US20020003038 Downhole well-control valve reservoir monitoring and drawdown optimization system |
| 01/09/2002 | EP1169548A1 Method for annular sealing |
| 01/09/2002 | EP1169547A1 Method of creating a wellbore in an underground formation |
| 01/09/2002 | EP1169541A1 Method of selective plastic expansion of sections of a tubing |
| 01/09/2002 | EP1169271A1 Method of aquifer remediation |
| 01/09/2002 | EP1169148A1 Process for the manufacture of a cylindrical pipe |
| 01/09/2002 | EP1129271A4 Shearing arrangement for subsea umbilicals |
| 01/09/2002 | EP1009908A4 Method and device for production of hydrocarbons |
| 01/09/2002 | CN2470585Y Driving device of mechanical-sealing type screw pump |
| 01/09/2002 | CN2470577Y Pump valve of reciprocating pump for injecting polymers |
| 01/09/2002 | CN2470575Y Screw-bar type oil-pumping pump |
| 01/09/2002 | CN2470533Y Boss-type explosive-filling synergist perforating bullet |
| 01/09/2002 | CN1330206A Hydraulically speed variable rotor and hydraulic type pumping unit for petroleum exploitation |