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)
12/1996
12/11/1996CN1033521C Ionic type rare earth ore in-situ lixiviation processing
12/10/1996US5582505 For pumping a highly viscous fluid
12/10/1996US5582252 Hydrocarbon transport system
12/10/1996US5582250 Overbalanced perforating and fracturing process using low-density, neutrally buoyant proppant
12/10/1996US5582249 Preventing the backflow by forming an agglomerated formations
12/10/1996US5582248 Reversal-resistant apparatus for tool orientation in a borehole
12/10/1996CA2155035C Method and apparatus for oil well stimulation
12/10/1996CA2127013C Coiled tubing wireline retrievable and selective gas lift assembly
12/10/1996CA2024418C Firing head
12/09/1996CA2178371A1 Method for inhibiting hydrate formation
12/07/1996CA2178281A1 Process for transporting a fluid, such as a dry gas, likely to form hydrates
12/07/1996CA2178280A1 Process for recycling a dispersant additive used in the transportation of condensate gas or oil with associated gas in the presence of hydrates
12/05/1996WO1996038688A1 Tool, tool system and method for coupling and installing subsea pipelines
12/05/1996WO1996038652A1 Spiral or wave strip perforating system
12/05/1996WO1996038649A2 Activating means for a down-hole tool
12/04/1996EP0745176A1 Gas lift system with retrievable gas lift valve
12/03/1996US5579845 Method for improved water well production
12/03/1996US5579844 Single trip open hole well completion system and method
12/03/1996US5579843 Resilient spider for well installation
12/03/1996US5579842 Bottomhole data acquisition system for fracture/packing mechanisms
12/03/1996US5579838 Above production disposal tool
11/1996
11/28/1996WO1996037686A1 Treatment of subsurface hydrocarbon reservoirs
11/28/1996WO1996037682A1 Method and apparatus for sealing and transferring force in a wellbore
11/28/1996WO1996037681A1 Connector assembly for an expandable slotted pipe
11/28/1996WO1996037680A1 Connector assembly for an expandable slotted pipe
11/28/1996WO1996037317A1 Apparatus for passive removal of subsurface contaminants
11/28/1996WO1996024752A3 Method and appartus for remote control of wellbore end devices
11/28/1996DE19519993A1 Geothermal probe
11/28/1996CA2225637A1 Treatment of subsurface hydrocarbon reservoirs
11/27/1996EP0744004A1 A protective device for an installation mounted on the seabed
11/27/1996CN2241224Y Beam-pumping unit with oval gear speed variator
11/27/1996CN1136635A Propulsion air-feeding type coal underground gasifying furnace
11/26/1996US5579283 Method and apparatus for communicating coded messages in a wellbore
11/26/1996US5577559 High-rate multizone gravel pack system
11/26/1996US5577558 In-well device for in situ removal of underground contaminants
11/21/1996WO1996036790A1 Device for the power supply of an immersed pump hanging from a pipe, particularly a flexible pipe
11/21/1996WO1996036430A1 Separator systems for well production fluids
11/20/1996EP0742868A1 Hydrocarbon fluid transport system
11/20/1996EP0678151B1 Downhole roller vane motor and roller vane pump
11/20/1996EP0643794B1 Method of creating a wellbore in an underground formation
11/20/1996EP0636229B1 Procedure and apparatus for compressing gas flowing through a conduit
11/20/1996CN1136338A A method for determining the reservoir properties of a solid carbonaceous subterranean formation
11/19/1996US5576503 Method of drawing samples into containers
11/19/1996US5576485 Single fracture method and apparatus for simultaneous measurement of in-situ earthen stress state and material properties
11/19/1996US5575625 Multiphase pump with sequential jets
11/19/1996US5575589 Apparatus and method for removing volatile contaminants from phreatic water
11/19/1996US5575585 Multiple well contaminant recovery apparatus
11/19/1996US5575335 Method for stimulation of subterranean formations
11/14/1996WO1996035858A1 Foam mixture for oil production flooding operations
11/13/1996EP0742345A2 Method and apparatus for removing a minable product from an underground seam
11/13/1996EP0741822A1 Tension leg platform and method of installation therefor
11/13/1996EP0674744B1 Assembly and process for drilling and completing multiple wells
11/13/1996EP0537330B1 Hydrocyclone separator
11/13/1996CN2240042Y High-efficiency oil-well oil-producing apparatus
11/13/1996CN2240041Y Six-connecting rod beam-pumping unit
11/13/1996CN1135782A Method for disposing carbon dioxide in a coalbed and simutaneously recovering methane from the coalbed
11/13/1996CN1135565A Rod-free screw-pump oil-extraction equipment
11/13/1996CN1033288C High molecular polymer measuring pump
11/13/1996CA2172583A1 Prepacked screen
11/13/1996CA2164145A1 Downhole gas separator
11/12/1996US5574218 Determining the length and azimuth of fractures in earth formations
11/12/1996US5573063 Deep well pumping apparatus
11/12/1996CA2110659C Viscid oil well completion
11/12/1996CA2096999C Stabilization and control of surface sagd production wells
11/12/1996CA2075084C Well screen having a protective frame for a horizontal or high-angle well
11/09/1996CA2175963A1 Method of determining the quality of steam for stimulating hydrocarbon production
11/07/1996WO1996035040A1 Heavy oil well stimulation composition and process
11/06/1996EP0741230A2 Method of detecting the location of well treating fluid
11/06/1996EP0643795B1 Method of completing an uncased section of a borehole
11/06/1996CN1135012A Method and apparatus for secondery obtg. gas from natural gas well
11/05/1996US5572021 Methods of detecting the locations of well treating fluids
11/05/1996US5571986 Method and apparatus for activating an electric wireline firing system
11/05/1996US5570744 Separator systems for well production fluids
10/1996
10/31/1996WO1996034178A1 Method for accelerating production
10/30/1996EP0739290A1 A vessel for production and/or loading/unloading and transport of hydrocarbons from offshore fields, and/or for carrying out well operations
10/30/1996CN2238907Y Eccentric water service throwing apparatus
10/30/1996CN2238906Y Eccentric water nozzle and oil nozzle water service apparatus and throwing tool
10/30/1996CN2238905Y Petroleum perforation apparatus with waveform adjusting structure
10/30/1996CN2238904Y Anti-sand screen pipe
10/30/1996CN1134501A By-pass annular pressure ignition system
10/30/1996CN1134500A Hollow sucker rod oil production method and its equipment
10/24/1996WO1996033296A1 Method for inhibiting microbially influenced corrosion
10/23/1996EP0738824A1 Delayed borate crosslinked fracturing fluid having increased temperature range
10/23/1996EP0738365A1 Formation injection tool for down-bore in-situ disposal
10/23/1996CN2238315Y Unjaming eccentric well head
10/23/1996CN1134179A Method for recovery of coal bed methane
10/22/1996US5567138 Method and apparatus for limiting eccentric deviations of a rotating polished rod in rotary pumping applications
10/22/1996US5567086 For conducting hydrocarbon recovery operations from the ocean floor
10/22/1996US5566760 Method of using a foamed fracturing fluid
10/22/1996US5566756 Method for recovering methane from a solid carbonaceous subterranean formation
10/22/1996US5566755 Method for recovering methane from a solid carbonaceous subterranean formation
10/22/1996CA2122842C Technique for stimulating long intervals
10/17/1996WO1996032599A2 Pump barrel seal assembly including seal/actuator element
10/17/1996WO1996032567A1 Method for fracturing a formation to control sand production
10/17/1996WO1996032566A1 Single horizontal wellbore gravity drainage assisted steam flooding process and apparatus
10/17/1996WO1996032210A1 Apparatus and method for removing volatile contaminants from phreatic water
10/17/1996WO1996025582A3 One trip cement and gravel pack system
10/17/1996WO1996024745A3 Computer controlled downhole tools for production well control
10/17/1996CA2218087A1 Method for fracturing a formation to control sand production
10/16/1996EP0737274A1 A "free" coil tubing downhole jet pump apparatus and method
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