| 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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| 09/27/2001 | US20010023763 Utilization of energy from flowing fluids |
| 09/27/2001 | US20010023614 Monitoring of downhole parameters and tools utilizing fiber optics |
| 09/26/2001 | CN2450409Y High-efficiency plunger |
| 09/26/2001 | CN2450407Y High-efficiency pumping unit |
| 09/26/2001 | CN2450406Y Sanding-in preventing oil well pump |
| 09/26/2001 | CN2450385Y Multi-stage high-efficiency oil-gas separator |
| 09/26/2001 | CN1071836C Method for changing oil production well into geothermal exploitation well |
| 09/25/2001 | US6293341 Method of controlling a hydrocarbons production well activated by injection of gas |
| 09/25/2001 | US6293340 Gas-lift-ball control device and oil producing method using said device |
| 09/25/2001 | CA2216059C Gravity concentrated carbon dioxide eor process |
| 09/20/2001 | WO2001069039A1 Method and apparatus for producing an oil, water, and/or gas wel l |
| 09/20/2001 | WO2001069038A1 Methods for improving oil production |
| 09/20/2001 | WO2001069036A1 Downhole surge pressure reduction and filtering apparatus |
| 09/20/2001 | WO2001069033A2 Oil-recovery device |
| 09/19/2001 | EP1133618A1 Lateral branch junction for well casing |
| 09/19/2001 | EP1133617A1 Wellbore system including a conduit and an expandable device |
| 09/19/2001 | EP1133616A1 Method for transporting and installing an expandable steel tubular |
| 09/19/2001 | EP0833770B1 A rotating connector for operative connection between a buoy and a floating vessel for the production of hydrocarbons |
| 09/19/2001 | CN2448949Y Swing straight line type large stroke oil pump |
| 09/19/2001 | CN1313926A Device for drilling or draining holes in soil or rock |
| 09/19/2001 | CN1313451A Chain-rope pumping unit |
| 09/19/2001 | CN1313449A Method for establishing branches at nodes of mother holes |
| 09/18/2001 | US6289991 Downhole apparatus |
| 09/18/2001 | US6289986 Pump rod drive and torque release mechanism |
| 09/18/2001 | CA2227856C Downhole pressure relief valve for well pump |
| 09/18/2001 | CA2048088C Method for gravel packing wells |
| 09/13/2001 | WO2001066910A1 Device and method for separating oil and water |
| 09/13/2001 | WO2001066909A2 Lightweight compositions and methods for well treating |
| 09/13/2001 | WO2001066232A1 Gas recovery device |
| 09/13/2001 | WO1997025518A3 Apparatus for setting a liner in a well casing |
| 09/13/2001 | US20010021351 Gear unit for a deep-borehole pump |
| 09/13/2001 | US20010020675 Wellbores utilizing fiber optic-based sensors and operating devices |
| 09/13/2001 | US20010020532 Hanging liners by pipe expansion |
| 09/13/2001 | DE10011187A1 Getriebe für eine Tiefbohrlochpumpe Gear for a deep well pump |
| 09/12/2001 | EP1132620A2 Transmission for deep well pump |
| 09/12/2001 | EP1132571A1 Method and apparatus for frac/gravel packs |
| 09/12/2001 | EP1132569A2 Method of treating a subterranean formation |
| 09/12/2001 | EP1131535A2 Method and system for accessing subterranean deposits from the surface |
| 09/12/2001 | EP1131534A2 Azimuth control of hydraulic vertical fractures in unconsolidated and weakly cemented soils and sediments |
| 09/12/2001 | CN1312882A Apparatus and method for perforating and stimulating a subterranean formation |
| 09/12/2001 | CN1312881A Device related to resers |
| 09/11/2001 | US6286986 Multiple tub mobile blender and method of blending |
| 09/11/2001 | US6286602 Method for controlling a device for transporting hydrocarbons between production means and a treatment plant |
| 09/11/2001 | US6286600 Ported sub treatment system |
| 09/11/2001 | US6286598 Single trip perforating and fracturing/gravel packing |
| 09/11/2001 | US6286596 Self-regulating lift fluid injection tool and method for use of same |
| 09/11/2001 | US6286595 Tubing system for an oil or gas well |
| 09/11/2001 | CA2033357C Method and device for stimulating an underground zone by controlled injection of fluid coming from a surrounding zone connected to the first by a drain through an intermediate layer of low permeability |
| 09/07/2001 | WO2001065718A2 Wireless power and communications cross-bar switch |
| 09/07/2001 | WO2001065069A1 Oilwell casing electrical power pick-off points |
| 09/07/2001 | WO2001065068A1 Wireless reservoir production control |
| 09/07/2001 | WO2001065067A1 Controllable production well packer |
| 09/07/2001 | WO2001065066A1 Wireless communication using well casing |
| 09/07/2001 | WO2001065065A1 Downhole separation of produced water in hydrocarbon wells, and simultaneous downhole injection of separated water and surface water |
| 09/07/2001 | WO2001065064A1 Downhole separation and injection of produced water |
| 09/07/2001 | WO2001065063A1 Wireless downhole well interval inflow and injection control |
| 09/07/2001 | WO2001065062A2 Use of downhole high pressure gas in a gas-lift well |
| 09/07/2001 | WO2001065061A1 Electro-hydraulically pressurized downhole valve actuator |
| 09/07/2001 | WO2001065060A1 Improving reservoir communication with a wellbore |
| 09/07/2001 | WO2001065056A1 Wireless downhole measurement and control for optimizing gas lift well and field performance |
| 09/07/2001 | WO2001065055A1 Controlled downhole chemical injection |
| 09/07/2001 | WO2001065054A1 Power generation using batteries with reconfigurable discharge |
| 09/07/2001 | WO2001065053A1 Tracer injection in a production well |
| 09/07/2001 | WO2001065049A2 Cavitating jet |
| 09/07/2001 | WO2000052293A9 Explosion prevention system for internal turret mooring system |
| 09/07/2001 | CA2401705A1 Wireless downhole measurement and control for optimizing gas lift well and field performance |
| 09/07/2001 | CA2339531A1 Method and apparatus for frac/gravel packs |
| 09/07/2001 | CA2324881A1 Oil lift system |
| 09/07/2001 | CA2300267A1 Oil lift system |
| 09/06/2001 | US20010020053 Expandable and curable flexible preform containing unsaturated resins, for casing a well or a line |
| 09/06/2001 | US20010018977 Selectively set and unset packers |
| 09/06/2001 | US20010018975 Chemically assisted thermal flood process |
| 09/05/2001 | EP1130215A2 Stimulating fluid production from unconsolidated formations |
| 09/05/2001 | EP1130074A1 Filtrate reducing additive and well fluid containg it |
| 09/05/2001 | EP1129272A1 Method and apparatus for remote control of a tubing exit sleeve |
| 09/05/2001 | EP1129271A1 Shearing arrangement for subsea umbilicals |
| 09/05/2001 | EP1128882A1 Separation of a mixture of liquid hydrocarbons and water |
| 09/05/2001 | CN2446305Y Reversing balancer of pumping unit |
| 09/05/2001 | CN2446304Y Hydraulic dual-action oil extracting unit |
| 09/05/2001 | CN2446279Y Oil sucking and heat durable special cable |
| 09/04/2001 | US6285014 Downhole induction heating tool for enhanced oil recovery |
| 09/04/2001 | US6284143 Microporous diffusion apparatus |
| 09/04/2001 | US6283674 In-well air stripping, oxidation, and adsorption |
| 09/04/2001 | US6283230 Method and apparatus for lateral well drilling utilizing a rotating nozzle |
| 09/04/2001 | US6283227 Downhole activation system that assigns and retrieves identifiers |
| 09/04/2001 | US6283216 Apparatus and method for establishing branch wells from a parent well |
| 09/04/2001 | US6283214 Optimum perforation design and technique to minimize sand intrusion |
| 09/04/2001 | US6283212 Method and apparatus for deliberate fluid removal by capillary imbibition |
| 09/04/2001 | US6283211 Method of patching downhole casing |
| 09/04/2001 | US6283210 Proactive conformance for oil or gas wells |
| 09/04/2001 | US6283209 Flexible liner system for borehole instrumentation and sampling |
| 09/04/2001 | US6283208 Orienting tool and method |
| 09/04/2001 | US6283207 Method for controlling a hydrocarbons production well of the gushing type |
| 09/04/2001 | US6283204 Oil and gas production with downhole separation and reinjection of gas |
| 08/30/2001 | WO2001063092A1 Method of producing petroleum |
| 08/30/2001 | WO2001063091A1 Artificial lift apparatus with automated monitoring characteristics |
| 08/30/2001 | WO2001063089A1 Sequential hydraulic control system for use in subterranean well |
| 08/30/2001 | WO2001062603A2 Integrated reservoir optimization |
| 08/30/2001 | US20010017223 Non -cryogenic nitrogen for on-site downhole drilling and post drillingoperations |
| 08/30/2001 | US20010017210 Liner setting tool |