| 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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| 01/11/2000 | CA2162794C Method and apparatus for producing a well |
| 01/06/2000 | WO2000000717A1 Sidepocket mandrel for orienting a gas lift valve |
| 01/06/2000 | WO2000000716A2 System and method for controlling fluid flows in oil or gas wells |
| 01/06/2000 | WO2000000715A1 Method and device for gas lifted wells |
| 01/06/2000 | WO2000000380A2 Connector for connecting a fluid pipe within a swivel stack |
| 01/06/2000 | CA2334965A1 System and method for controlling fluid flows in oil or gas wells |
| 01/06/2000 | CA2333002A1 Connector for connecting a fluid pipe within a swivel stack |
| 01/05/2000 | EP0968354A1 Wellhead device for retaining the solid particles carried by the production fluid |
| 01/05/2000 | EP0968353A1 Full bore gun system |
| 01/05/2000 | EP0968351A1 Expandable slotted tubing string and method for connecting such a tubing string |
| 01/05/2000 | CN2357129Y Production-increasing energy-saving break preventing device for pumping well |
| 01/05/2000 | CN2357128Y Rodlike chemicals adding device for high-pressure oil- and gas-wells |
| 01/05/2000 | CN2357122Y Well head device for extracting oil |
| 01/05/2000 | CN1240494A Method for drying out rock containing immobile formation water within the encroachment area of natal gas deposits and gas reservoirs |
| 01/04/2000 | US6012015 Control model for production wells |
| 01/04/2000 | US6009947 Casing conveyed perforator |
| 01/04/2000 | US6009945 Oil well tool |
| 01/04/2000 | US6009943 Liner assembly and method |
| 12/29/1999 | WO1999067505A1 Recovery of heavy hydrocarbons by in-situ hydrovisbreaking |
| 12/29/1999 | WO1999067504A1 Production of heavy hydrocarbons by in-situ hydrovisbreaking |
| 12/29/1999 | WO1999067503A1 Convective heating startup for heavy oil recovery |
| 12/29/1999 | WO1999057410A3 Method of and device for production of hydrocarbons |
| 12/29/1999 | EP0772665B1 Method of enriching the methane content of a mine gas |
| 12/29/1999 | CN2356142Y Novel filter for producing raw oil |
| 12/29/1999 | CN2356141Y Casing swabbing tool for oil-water well |
| 12/28/1999 | USRE36466 Flowback of particulates resulting from unconsolidated formation fines through perforations in a wellbore casing is prevented by fracturing using a mixture of fibers and particle in combination with resin consolidation |
| 12/28/1999 | US6007306 Multiphase pumping system with feedback loop |
| 12/28/1999 | US6007274 In-well air stripping, oxidation, and adsorption |
| 12/28/1999 | US6007227 Blender control system |
| 12/28/1999 | US6006838 Apparatus and method for stimulating multiple production zones in a wellbore |
| 12/28/1999 | US6006833 Method for creating leak-tested perforating gun assemblies |
| 12/28/1999 | US6006832 Method and system for monitoring and controlling production and injection wells having permanent downhole formation evaluation sensors |
| 12/28/1999 | US6006829 Filter for subterranean use |
| 12/28/1999 | US6006828 Apparatus for the remote deployment of valves |
| 12/28/1999 | CA2000665C Process and apparatus for logging of non eruptive producing well |
| 12/26/1999 | CA2267019A1 An undersea drilling template |
| 12/25/1999 | CA2241732A1 Downwell isolator |
| 12/23/1999 | WO1999066169A2 Device related to risers |
| 12/23/1999 | WO1999065573A1 A method for remediating a medium |
| 12/23/1999 | CA2335119A1 A method for remediating a medium |
| 12/23/1999 | CA2333730A1 Device related to risers |
| 12/23/1999 | CA2241478A1 Convective heating startup for heavy oil recovery |
| 12/22/1999 | CN2355101Y Aligner for synchronously lifting of oil well tubing and casing |
| 12/22/1999 | CN1239531A Deformed multiple well template and process of use |
| 12/21/1999 | US6004385 Compact gas liquid separation system with real-time performance monitoring |
| 12/21/1999 | US6004114 Hydraulic submersible pump for oil well production |
| 12/21/1999 | US6003607 Wellbore equipment positioning apparatus and associated methods of completing wells |
| 12/21/1999 | US6003604 Subsea wellhead connection assembly and method of installation |
| 12/21/1999 | US6003600 Methods of completing wells in unconsolidated subterranean zones |
| 12/21/1999 | US6003599 Azimuth-oriented perforating system and method |
| 12/21/1999 | US6003597 Directional coupling sensor for ensuring complete perforation of a wellbore casing |
| 12/21/1999 | CA2235452C Wellhead separation system |
| 12/16/1999 | WO1999064781A1 Pipeline monitoring systems |
| 12/16/1999 | WO1999064742A1 Fluid well pump |
| 12/16/1999 | WO1999064719A2 Process of preparing a gas composition and use thereof |
| 12/15/1999 | EP0963539A1 Well boring with blasting agents |
| 12/15/1999 | EP0963505A1 Apparatus and methods for downhole fluid separation and control of water production |
| 12/15/1999 | EP0703830B1 Apparatus for downhole cyclone separation |
| 12/15/1999 | CN2353886Y Downhole separator |
| 12/15/1999 | CN2353885Y Multifunction eccentric water-distributor |
| 12/15/1999 | CN1238824A System, vessel, seabed installation and method for producing oil or gas |
| 12/15/1999 | CN1238823A Method and device for production of hydrocarbons |
| 12/15/1999 | CN1238420A In-situ chemical reactor for recovery of metals or purification of salts |
| 12/14/1999 | US6002985 Method of controlling development of an oil or gas reservoir |
| 12/14/1999 | US6000471 Hole in the ground for transfer of geothermal energy to an energy-carrying liquid and a method for production of the hole |
| 12/14/1999 | US6000468 Method and apparatus for the downhole metering and control of fluids produced from wells |
| 12/11/1999 | CA2240381A1 Method and apparatus for manufacturing a housing for a perforating gun |
| 12/09/1999 | WO1999063201A1 Method and system for separating and injecting gas in a wellbore |
| 12/09/1999 | WO1999063200A1 A coal mine through which coal gas can be produced directly from coal seam and a coal gas production method through the mine |
| 12/09/1999 | WO1999063198A1 Mechanical shut-off valve |
| 12/09/1999 | CA2332044A1 Encapsulated breaker slurry compositions and methods of use |
| 12/08/1999 | EP0962625A2 Shut-off valve for downhole tool for retrieving said tool from a well under pressure |
| 12/08/1999 | EP0962624A1 Device for making or regenerating water wells |
| 12/08/1999 | EP0962623A2 Well completion tool with fluid passages |
| 12/08/1999 | EP0961867A1 Structure for the production of oil and/or gas at sea |
| 12/08/1999 | CN2352672Y High efficiency oil pumping machine |
| 12/07/1999 | WO2000073622A1 Method for carrying out operations on petroleum and gas fields and deep-sea platform for realising the same |
| 12/07/1999 | US5996691 Control apparatus and method for controlling the rate of liquid removal from a gas or oil well with a progressive cavity pump |
| 12/07/1999 | CA2374839A1 Method for carrying out operations on petroleum and gas fields and deep-sea platform for realising the same |
| 12/07/1999 | CA2013987C In situ tar sands reduced pressure separation process and apparatus |
| 12/02/1999 | WO1999050524A3 Subsea mud pump |
| 12/01/1999 | EP0961008A2 Apparatus and method for drilling and completing a deviated borehole |
| 12/01/1999 | EP0961007A2 Expandable wellbore junction |
| 12/01/1999 | EP0960263A2 Tool and method for removing excess cement from the top of a liner after hanging and cementing thereof |
| 12/01/1999 | CN2351550Y Compound gas filling device for oil recovery by heating |
| 12/01/1999 | CN2351549Y Oil-water well casing pumping wellhead equipment |
| 12/01/1999 | CN2351548Y Subsurface device for starting to flow a well |
| 12/01/1999 | CN1046988C Artificial well-wall sand-proof technology for steam-injection thermal recovery well of thickened oil |
| 12/01/1999 | CN1046976C Assembly for reinforcing well, special for drilling oil well |
| 11/30/1999 | US5994670 Electrical heating of soils using high efficiency electrode patterns and power phases |
| 11/30/1999 | US5992524 Method for isolating multi-lateral well completions while maintaining selective drainhole re-entry access |
| 11/30/1999 | US5992523 Latch and release perforating gun connector and method |
| 11/30/1999 | US5992521 Method and system for increasing oil production from an oil well producing a mixture of oil and gas |
| 11/30/1999 | US5992519 Real time monitoring and control of downhole reservoirs |
| 11/30/1999 | US5992518 Filter for subterranean use |
| 11/30/1999 | US5992517 Downhole reciprocating plunger well pump system |
| 11/30/1999 | US5992289 Firing head with metered delay |
| 11/28/1999 | CA2272679A1 Bore hole safety valves |
| 11/25/1999 | WO1999060248A1 Method of producing fluids from an underground reservoir |
| 11/25/1999 | WO1999060247A1 Automatic hydrocarbon production management system |