Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 43 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
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)
06/2000
06/07/2000CA2666668A1 Wellbore casing
06/06/2000USRE36723 Spoolable coiled tubing completion system
06/06/2000US6070677 Method and apparatus for enhancing production from a wellbore hole
06/06/2000US6070671 Creating zonal isolation between the interior and exterior of a well system
06/06/2000US6070666 Fracturing method for horizontal wells
06/06/2000US6070664 Reducing formation water formation by adding reactive polymers at alkaline ph, introducing galactomannan gelling agent and water to induce fracture, shutting-in well for polymers to polymerize, reducing water permeability
06/06/2000US6070663 Multi-zone profile control
06/06/2000US6070661 Production pump for use with a downhole pumping system
06/06/2000US6070608 Variable orifice gas lift valve for high flow rates with detachable power source and method of using
06/06/2000CA2252192C In-situ production of bitumen
06/02/2000WO2000031417A1 Through-tubing, retrievable downhole pump system
06/02/2000WO2000031376A2 Method and system for accessing subterranean deposits from the surface
06/02/2000WO2000031375A1 Lateral branch junction for well casing
06/02/2000WO2000031374A1 Apparatus and method for enhancing fluid and gas recovery in a well
06/02/2000WO2000008301A3 Connector for expandable well screen
06/02/2000CA2792184A1 Method and system for accessing subterranean deposits from the surface
06/02/2000CA2351339A1 Lateral branch junction for well casing
05/2000
05/31/2000EP1004746A1 Process for the production of liquid hydrocarbons
05/31/2000EP1004745A2 Downhole pressure actuated locating system and locating method
05/31/2000CN2380717Y Linkage oil-pump
05/31/2000CN2380684Y Separating sieve tube
05/31/2000CN2380683Y Anchor with automatic net-washing function used at sand-land
05/31/2000CN2380682Y Oil-blast-proof drain-type oil-pumping rod mounting-dismounting device
05/31/2000CN1254788A Compound petroleum driving and recovering method by microbe
05/31/2000CN1254787A Thermally dissolving process for recovery of natural alkali mine
05/30/2000US6069118 Enhancing fluid removal from fractures deliberately introduced into the subsurface
05/30/2000US6068054 Oil recovery method using an emulsion
05/30/2000US6068053 Fluid separation and reinjection systems
05/30/2000US6068015 Sidepocket mandrel with orienting feature
05/30/2000CA2019421C Apparatus used for well drilling operations and method therefor
05/25/2000WO2000029716A2 Azimuth control of hydraulic vertical fractures in unconsolidated and weakly cemented soils and sediments
05/25/2000WO2000029715A1 Flow control and isolation in a wellbore
05/25/2000WO2000029710A2 Wellbore flow control device
05/25/2000WO2000029708A2 Method and apparatus for selective injection or flow control
05/25/2000WO2000028826A2 Oil well productivity stimulation
05/24/2000EP1002906A2 Well pipe
05/24/2000EP1001922A4 Method for recovering gas from hydrates
05/24/2000EP1001922A1 Method for recovering gas from hydrates
05/24/2000CN2379602Y Magnetic filtering sand apparatus for oil well
05/24/2000CN1254053A Technological process for implementing petroleum development by using solar energy
05/23/2000US6066193 Tapered flow gas separation system
05/23/2000US6065550 Method and system for drilling and completing underbalanced multilateral wells utilizing a dual string technique in a live well
05/23/2000US6065538 Method of obtaining improved geophysical information about earth formations
05/23/2000US6065536 Apparatus for setting a liner in a well casing
05/23/2000US6065535 Formation fracturing and gravel packing tool
05/23/2000US6065500 Expandable tubing
05/23/2000CA2027105C Method of producing a tar sand deposit containing a conductive layer
05/17/2000EP1001133A1 Treating subterranean formation
05/17/2000EP1001132A2 Telescoping/release joint
05/17/2000EP1000222A1 Creating zonal isolation between the interior and exterior of a well system
05/17/2000EP0871831B1 Subsea flexible pipe
05/17/2000EP0851968B1 A method of separating production fluid from an oil well
05/17/2000CN2378534Y Axle sleeve type perforating and fracturing combined apparatus
05/17/2000CN1253228A Full-balanced long-stroke pumping unit with flexible drive parts
05/17/2000CN1253029A Slide filter method and water well with laminated slide filter
05/17/2000CN1052524C Mineralizing gradient water-filling method for low-permeable reservoir
05/16/2000US6063001 Gearbox assembly for deep oil well pumps
05/16/2000US6062313 Expandable tank for separating particulate material from drilling fluid and storing production fluids, and method
05/16/2000US6062310 Full bore gun system
05/16/2000US6062308 Well header for use in frigid environments
05/16/2000US6062307 Screen assemblies and methods of securing screens
05/15/2000CA2299092A1 Method of reducing the width of flow openings in sidewall of well liner, and a well liner
05/11/2000WO2000026504A1 Method to reduce water saturation in near-well region
05/11/2000WO2000026502A1 Connector for an expandable tubing string
05/11/2000WO2000026501A1 Wellbore system including a conduit and an expandable device
05/11/2000WO2000026500A1 Method for transporting and installing an expandable steel tubular
05/11/2000WO2000026499A1 Method and apparatus for remote control of a tubing exit sleeve
05/11/2000WO2000026496A1 Shearing arrangement for subsea umbilicals
05/11/2000DE19849756A1 Antriebskopf für ein drehantreibbares Gestänge, insbes. zum Antreiben einer Bohrlochpumpe Drive head for a rotatably driven linkage, esp. For driving a downhole pump
05/11/2000CA2347786A1 Method to reduce water saturation in near-well region
05/10/2000EP0999345A2 Sand control screen
05/10/2000EP0999341A2 Method and apparatus for controlling fluid flow in subterranean formations
05/10/2000EP0998619A2 Variable choke for use in a subterranean well and method of controlling a fluid flow
05/10/2000EP0938622A4 Method for accelerating production - c-i-p ii
05/10/2000CN2377759Y Intelligent energy-saving electric controller
05/10/2000CN2377349Y Gas and steam producer for thermal recovery of viscous crude
05/10/2000CN2377348Y Large bore water filtering tube
05/10/2000CN1252851A Using equipment in a well system
05/10/2000CN1252486A Petroleum recovering method and equipment through microwave cracking into light hydrocarbon
05/10/2000CN1052292C Cutting device for making a slot in an underground formation
05/09/2000US6060435 Ammonia; nonprecipitating
05/09/2000US6059539 Sub-sea pumping system and associated method including pressure compensating arrangement for cooling and lubricating
05/09/2000US6059040 Method and apparatus for withdrawal of liquid phase from wellbores
05/09/2000US6059039 Extendable semi-clustered subsea development system
05/09/2000US6059033 Apparatus for completing a subterranean well and associated methods
05/09/2000US6059032 Method and apparatus for treating long formation intervals
05/09/2000US6059030 Sand recovery unit
05/04/2000WO2000025026A1 Submersible pump for use in a bore hole
05/04/2000WO2000025025A1 Submersible pump assembly for use in a well
05/04/2000WO2000025002A1 Process for sequentially applying sagd to adjacent sections of a petroleum reservoir
05/04/2000WO2000025001A1 Gas well dewatering method and device
05/04/2000WO2000025000A1 Drive head for a rotary-driven rod assembly, especially for driving a sand pump
05/04/2000WO2000024999A1 Downhole activation system
05/04/2000WO2000024493A1 Separation of a mixture of liquid hydrocarbons and water
05/04/2000WO1999002815A8 Device and method for creating ramifications in a bore hole
05/04/2000DE19848796C1 Tauchpumpeneinrichtung zur Verwendung in einem Bohrloch Submersible pump device for use in a wellbore
05/04/2000DE19848792C1 Tauchpumpeneinrichtung zur Verwendung in einem Bohrloch Submersible pump device for use in a wellbore
05/04/2000CA2569693A1 Method and system for transporting a flow of fluid hydrocarbons containing water
05/04/2000CA2348790A1 Hydrocarbon separation
05/04/2000CA2316792A1 Drive head for a rotary-driven rod assembly, especially for driving a sand pump
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