| 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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| 10/02/2002 | CN1091833C Wall system, method of using equipment in well systems and method of developing said system |
| 10/02/2002 | CN1091832C Method for disposing carbon dioxide in a coalbed and simutaneously recovering methane from the coalbed |
| 10/02/2002 | CN1091831C Sub-sea pumping system and associated and pressure compensator for same method |
| 10/02/2002 | CA2377857A1 Intelligent well sand control |
| 10/01/2002 | US6458191 Separator inlet |
| 10/01/2002 | US6458184 Recovery of zinc from geothermal brines |
| 10/01/2002 | US6457749 Lock assembly |
| 10/01/2002 | US6457540 Method and system for hydraulic friction controlled drilling and completing geopressured wells utilizing concentric drill strings |
| 10/01/2002 | US6457536 Method and system for exploiting natural resources under the seabed |
| 10/01/2002 | US6457533 Downhole tubing |
| 10/01/2002 | US6457532 Procedures and equipment for profiling and jointing of pipes |
| 10/01/2002 | US6457531 Water separation system with encapsulated electric submersible pumping device |
| 10/01/2002 | US6457528 Method for preventing critical annular pressure buildup |
| 10/01/2002 | US6457525 Method and apparatus for completing multiple production zones from a single wellbore |
| 10/01/2002 | US6457522 Clean water injection system |
| 10/01/2002 | US6457518 Expandable well screen |
| 09/26/2002 | WO2002075197A1 Threaded connection |
| 09/26/2002 | WO2002075112A1 Method for developing a hydrocarbon reservoir (variants) and complex for carrying out said method (variants) |
| 09/26/2002 | WO2002075111A1 Circulation control device within a well bore |
| 09/26/2002 | WO2002075110A1 A well device for throttle regulation of inflowing fluids |
| 09/26/2002 | WO2002075109A1 Double-cone device and pump |
| 09/26/2002 | WO2002075108A1 Tube manufacture |
| 09/26/2002 | WO2002075107A1 Tubing seal |
| 09/26/2002 | WO2002075106A1 Water well filter apparatus |
| 09/26/2002 | WO2002075105A1 A pumping unit driven by a linear electric motor |
| 09/26/2002 | WO2002075100A1 Apparatus and method for running down hole liners |
| 09/26/2002 | US20020138241 Field/reservoir optimization utilizing neural networks |
| 09/26/2002 | US20020134733 Microporous diffusion apparatus |
| 09/26/2002 | US20020134585 Low debris shaped charge perforating apparatus and method for use of same |
| 09/26/2002 | US20020134554 System and method for removing solid particulates from a pumped wellbore fluid |
| 09/26/2002 | US20020134551 Method and apparatus for selective injection or flow control with through-tubing operation capacity |
| 09/26/2002 | US20020134547 Self-contained portable, automated blow down apparatus |
| 09/26/2002 | US20020134546 Method and system for accessing subterranean deposits from the surface |
| 09/25/2002 | EP1243748A1 Double-cone device and pump |
| 09/25/2002 | EP1242881A1 Method and system for simulating a hydrocarbon-bearing formation |
| 09/25/2002 | EP1242716A1 Foam monitoring and control system |
| 09/25/2002 | EP1242714A1 Tools and methods for use with expandable tubulars |
| 09/25/2002 | EP1198659A4 System for improving coalbed gas production |
| 09/25/2002 | EP1086336B1 Pipeline monitoring systems |
| 09/25/2002 | EP1021231B1 Improved helical separator |
| 09/25/2002 | EP0729543A4 Well tool |
| 09/25/2002 | EP0668959A4 Method and apparatus for gravel packing a well |
| 09/25/2002 | CN2513279Y Straight motor automatic balacing device of slide beam oil pump unit |
| 09/25/2002 | CN2512906Y Frequency changing hydraulic oil pump unit |
| 09/25/2002 | CN2512900Y Wate well operation without laying spray tube column |
| 09/25/2002 | CN1370927A Hydraulic feedback sand-preventing pump for flexible continuous pumping rod |
| 09/25/2002 | CN1370910A Energy-saving method for oil pumping unit |
| 09/25/2002 | CN1370909A Steel cable lifting belt driving wheel for oil production machine |
| 09/24/2002 | US6456902 Web-based system and method for enhancing fluid and gas recovery as well as remote on demand control of fluid flow in a well |
| 09/24/2002 | US6454836 Separation of contaminants from hydrocarbon gas in a wellbore and selective recovery of hydrocarbon gas; permnselective materials arranged in tubes with the hydrocarbon gas flowing through and contaminants permeating out |
| 09/24/2002 | US6454493 Method for transporting and installing an expandable steel tubular |
| 09/24/2002 | US6454013 Expandable downhole tubing |
| 09/24/2002 | US6454010 Well production apparatus and method |
| 09/24/2002 | US6454002 Method and apparatus for increasing production from a well system using multi-phase technology in conjunction with gas-lift |
| 09/24/2002 | US6454000 Cavity well positioning system and method |
| 09/24/2002 | US6453994 Buoyant water pump system |
| 09/24/2002 | US6453944 Multiport gate valve assembly |
| 09/24/2002 | CA2277378C Steam-assisted gravity drainage heavy oil recovery process |
| 09/24/2002 | CA2250648C Enhanced oil recovery by altering wettability |
| 09/19/2002 | WO2002073001A1 Steel pipe for use as embedded expanded pipe, and method of embedding oil-well steel pipe |
| 09/19/2002 | WO2002073000A1 Expander for expanding a tubular element |
| 09/19/2002 | WO2002072999A1 Power connection to and/or control of wellhead trees |
| 09/19/2002 | WO2002072998A1 Method for pumping fluids |
| 09/19/2002 | US20020132862 In situ heating; process control |
| 09/19/2002 | US20020130783 System of tracking use time for electric motors and other components used in a subterranean environment |
| 09/19/2002 | US20020130517 Threaded connection |
| 09/19/2002 | US20020129940 High temperature explosives for downhole well applications |
| 09/19/2002 | US20020129935 Expandable well screen |
| 09/18/2002 | EP1240408A1 System for producing de-watered oil |
| 09/18/2002 | EP1044316B1 Method for drilling and completing a hydrocarbon production well |
| 09/18/2002 | CN2511810Y Efficient boosting valve for oil pump |
| 09/18/2002 | CN2511792Y Water flooding equipment for boosting well pressure |
| 09/18/2002 | CN2511791Y Device for producing thick oil by water adding to reduce viscosity |
| 09/18/2002 | CN2511790Y Isolative booster device for intermediate gun perforator |
| 09/18/2002 | CN2511789Y Tower digital sucker |
| 09/18/2002 | CN1369641A Recognition and control method for affection of sucker rod's dilatation deformation to pmping effect for pumping unit |
| 09/18/2002 | CN1369640A Driver for steel cable lifting band of pumping unit |
| 09/18/2002 | CN1369616A Method for controlling stroke period of pumping unit |
| 09/18/2002 | CN1369615A Appts. and method for filling gravel |
| 09/18/2002 | CN1369614A Pumping unit with low-speed synchronous motor |
| 09/18/2002 | CN1369613A Individually balanced pumping unit with linear motor |
| 09/17/2002 | US6450261 Flexible swedge |
| 09/17/2002 | US6450257 Monitoring fluid flow through a filter |
| 09/17/2002 | US6450256 Enhanced coalbed gas production system |
| 09/17/2002 | US6450255 Downhole flow control devices |
| 09/17/2002 | US6449961 Cooling, heat exchanging |
| 09/17/2002 | CA2246363C System for producing high density, extra large well perforations |
| 09/17/2002 | CA2242447C Alternate-flow well tool having an internal shunt tube |
| 09/17/2002 | CA2231399C Tool for blocking axial flow in gravel-packed well annulus |
| 09/17/2002 | CA2152682C Shaped charge with simultaneous multi-point initiation of explosives |
| 09/17/2002 | CA2044473C Sweep in thermal eor using emulsions |
| 09/17/2002 | CA2038648C Process for conserving steam quality in deep steam injection wells |
| 09/16/2002 | CA2341129A1 Process for increasing flow capacity of gas wells |
| 09/12/2002 | WO2002070861A1 Hydraulic fracturing fluid comprising a block copolymer containing at least one water-soluble block and one hydrophobic block |
| 09/12/2002 | WO2002070860A1 Apparatus and method for gravel packing with internal alternate flowpath |
| 09/12/2002 | WO2002070339A2 System for lifting water from gas wells using a propellant |
| 09/12/2002 | WO2001011189A9 Apparatus for optimizing production of multi-phase fluid |
| 09/12/2002 | US20020126021 Permanent downhole, wireless, two-way telemetry backbone using redundant repeaters |
| 09/12/2002 | US20020125045 Detonation transfer subassembly and method for use of same |
| 09/12/2002 | US20020125011 Casing conveyed perforating process and apparatus |