| 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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| 11/14/2001 | CN2459465Y Crank pin drop-resistant device for oil pumping machine |
| 11/14/2001 | CN2459463Y Forced liquid increasing device for oil pump |
| 11/14/2001 | CN2459441Y Natural gas engine driven moveable water filler |
| 11/14/2001 | CN2459440Y All through diameter perforating gun assembly for oil gas well |
| 11/14/2001 | CN2459439Y 涡轮填砂工具 Turbo sand filling tool |
| 11/13/2001 | US6317694 Method and apparatus for selecting a sand pack mesh for a filter pack and a well casing slot size for a well |
| 11/13/2001 | US6315898 Emulsion treating method and apparatus |
| 11/13/2001 | US6315837 Using hydrocyclone |
| 11/13/2001 | US6315050 Packer |
| 11/13/2001 | US6315048 System and process for reducing the flowing bottom hole pressure in a natural gas well |
| 11/13/2001 | US6315043 Downhole anchoring tools conveyed by non-rigid carriers |
| 11/13/2001 | US6315041 Multi-zone isolation tool and method of stimulating and testing a subterranean well |
| 11/13/2001 | US6315040 Expandable well screen |
| 11/13/2001 | CA2243105C Vapour extraction of hydrocarbon deposits |
| 11/08/2001 | WO2001083947A1 Method and system for sea-based handling of hydrocarbons |
| 11/08/2001 | WO2001083945A1 A method for treating a hydrocarbon containing formation |
| 11/08/2001 | WO2001083944A1 Method and system for gas-lifting well effluents |
| 11/08/2001 | WO2001083943A1 A method and device for regulating the flow rate of formation fluids produced by an oil well |
| 11/08/2001 | WO2001083941A1 Well pump device |
| 11/08/2001 | WO2001083940A1 Electrical well heating system and method |
| 11/08/2001 | WO2001083075A1 A method and a system for separating a mixture |
| 11/07/2001 | EP1152120A2 Expandable well screen |
| 11/07/2001 | EP1152119A2 An apparatus for running tubulars into a borehole |
| 11/07/2001 | EP1151180A1 Tubing anchor |
| 11/07/2001 | EP1150881A1 Working ship |
| 11/07/2001 | EP1025604B1 Producing electrical energy from natural gas using a solid oxide fuel cell |
| 11/07/2001 | CN2458437Y Soft sealed sand preventing pipe type oil-well pump |
| 11/07/2001 | CN1320763A Process for gasifying underground coal |
| 11/07/2001 | CN1320762A Nm-membrane oil-displacing technique |
| 11/07/2001 | CN1320761A Self-adaptive method for working system for oil production apparatus |
| 11/07/2001 | CN1320760A Method for increasing running efficiency of oil production apparatus |
| 11/07/2001 | CN1320759A Automatic digital well-logging method |
| 11/07/2001 | CN1320758A Method for measuring unloading, loading and running states of underground deep-well pump |
| 11/07/2001 | CN1074502C Hot air-steam mixed viscous crude inflow-outflow recovery method |
| 11/07/2001 | CN1074501C Supersonic pulse reflecting method to measure depth of perforation |
| 11/07/2001 | CN1074300C Suppression of slug flow in multi-phase fluid stream |
| 11/06/2001 | US6312605 Sparge system extracts contaminants in the form of gas from groundwater in a gas/gas/water reaction; microporous diffuser having a porosity matched to a soil porosity. |
| 11/06/2001 | US6312193 Coupling system for subsea pipelines and method for establishing such system |
| 11/06/2001 | US6311774 Method and apparatus for securing a well casing to a wellbore |
| 11/06/2001 | US6311772 Hydrocarbon preparation system for open hole zonal isolation and control |
| 11/05/2001 | CA2346441A1 Expandable well screen |
| 11/01/2001 | WO2001081724A1 Treatment well tiltmeter system |
| 11/01/2001 | WO2001081723A1 Enhanced oil recovery by in situ gasification |
| 11/01/2001 | WO2001081722A1 A method for treating a hydrocarbon-containing formation |
| 11/01/2001 | WO2001081721A1 A method for treating a hydrocarbon containing formation |
| 11/01/2001 | WO2001081720A1 In situ recovery of hydrocarbons from a kerogen-containing formation |
| 11/01/2001 | WO2001081719A1 Method for reducing sand production |
| 11/01/2001 | WO2001081717A2 Method for treating a hydrocarbon-containing formation |
| 11/01/2001 | WO2001081716A2 A method for sequestering a fluid within a hydrocarbon containing formation |
| 11/01/2001 | WO2001081715A2 Method and system for treating a hydrocarbon containing formation |
| 11/01/2001 | WO2001081713A1 Electrical well heating system and method |
| 11/01/2001 | WO2001081712A1 Method and apparatus for injecting one or more fluids into a borehole |
| 11/01/2001 | WO2001081710A1 Central circulation completion system |
| 11/01/2001 | WO2001081654A1 Fluorescent monomers and tagged treatment polymers containing same for use in industrial water systems |
| 11/01/2001 | WO2001081505A1 Method for production of hydrocarbons from organic-rich rock |
| 11/01/2001 | WO2001081502A2 Mineral acid enhanced thermal treatment for viscosity reduction of oils (ecb-0002) |
| 11/01/2001 | WO2001081240A2 In-situ heating of coal formation to produce fluid |
| 11/01/2001 | WO2001081239A2 In situ recovery from a hydrocarbon containing formation |
| 11/01/2001 | US20010036905 Filter cake cleanup and gravel pack methods for oil based or water based drilling fluids |
| 11/01/2001 | US20010035057 Apparatus for passive removal of subsurface contaminants and mass flow measurement |
| 11/01/2001 | CA2670076A1 Method and system for treating a hydrocarbon containing formation |
| 11/01/2001 | CA2407404A1 A method for treating a hydrocarbon-containing formation |
| 11/01/2001 | CA2407215A1 Method and system for treating a hydrocarbon containing formation |
| 11/01/2001 | CA2407026A1 In situ recovery from a hydrocarbon containing formation |
| 11/01/2001 | CA2406729A1 Electrical well heating system and method |
| 10/31/2001 | EP1149981A2 Method and apparatus for locking charges into a charge holder |
| 10/31/2001 | EP1149226A1 Foamed nitrogen in liquid co 2? for fracturing |
| 10/31/2001 | EP1149225A1 Method for creating secondary sidetracks in a well system |
| 10/31/2001 | EP0910724B1 Downhole cyclone separation |
| 10/31/2001 | CN2457369Y Movable tube type thickened oil pump |
| 10/31/2001 | CN2457340Y Device for implementing perforation and cracking to underground oil layer in oil production |
| 10/31/2001 | CN2457339Y Switch type water injection mandrel |
| 10/31/2001 | CN1320189A Method for the in situ extraction of gas from coal seams |
| 10/31/2001 | CN1074019C Method for preparation of polymer oil-displacing agent |
| 10/30/2001 | US6308783 Wellbore flow control device |
| 10/28/2001 | CA2332228A1 Downhole induction heating tool for enhanced oil recovery |
| 10/25/2001 | WO2001079657A1 Debris catcher |
| 10/25/2001 | WO2001079656A1 Device for flow and liftgas production of oil-wells (versions) |
| 10/25/2001 | WO2001078860A1 Outlet arrangement for down-hole separator |
| 10/25/2001 | US20010033164 Focused through-casing resistivity measurement |
| 10/25/2001 | US20010032721 Method for boosting the output voltage of a variable frequency drive |
| 10/24/2001 | EP1148207A1 Connecting apparatus for a submerged fluid transporting line |
| 10/24/2001 | EP1147287A2 Procedures and equipment for profiling and jointing of pipes |
| 10/24/2001 | EP1147283A1 Multilateral well and electrical transmission system |
| 10/24/2001 | EP1146951A1 Method for recovering co 2? |
| 10/24/2001 | EP0683837B1 Method for remediation of groundwater contamination |
| 10/24/2001 | CN2455946Y Pump for oil well |
| 10/24/2001 | CN2455933Y 阻流器 Spoiler |
| 10/24/2001 | CN2455931Y Linked casing gas sucker of pumping unit |
| 10/24/2001 | CN1318424A Fuel oil purifying and supplying device |
| 10/24/2001 | CN1073664C Perforator |
| 10/23/2001 | US6308137 Method and apparatus for communication with a downhole tool |
| 10/23/2001 | US6307290 Piston motor protector, and motor and pumping system incorporating the same |
| 10/23/2001 | US6306296 Groundwater and soil remediation with microporous diffusion apparatus |
| 10/23/2001 | US6305944 Electrical connector |
| 10/23/2001 | US6305911 Device and process intended for two-phase compression of a gas soluble in a solvent |
| 10/23/2001 | US6305720 Remote articulated connector |
| 10/23/2001 | US6305475 Method for simultaneously installing multiple strings within a wellbore and related tools |
| 10/23/2001 | US6305472 Chemically assisted thermal flood process |
| 10/23/2001 | US6305469 Method of creating a wellbore |