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)
08/2012
08/01/2012CN101806203B High-pressure hydraulic rotary plug-removing device
08/01/2012CN101360883B Method for expanding tubular piece in well
08/01/2012CA2740664A1 Apparatus for connecting downhole tools to a wireline
07/2012
07/31/2012US8232438 Method and system for jointly producing and processing hydrocarbons from natural gas hydrate and conventional hydrocarbon reservoirs
07/31/2012US8230948 Self-contained system for drilling a drainhole
07/31/2012US8230935 Sand control screen assembly with flow control capability
07/31/2012US8230929 Methods of producing hydrocarbons for substantially constant composition gas generation
07/31/2012US8230927 Methods and systems for producing fluid from an in situ conversion process
07/31/2012US8230925 Degradable fiber systems for stimulation
07/31/2012US8230924 Fracturing and gravel packing tool with upper annulus isolation in a reverse position without closing a wash pipe valve
07/31/2012US8230923 Controlling coal fines in coal bed operations
07/31/2012US8230922 Enhanced oil recovery by polymer without supplementary equipment or product
07/31/2012US8230921 Oil recovery by in-situ cracking and hydrogenation
07/31/2012US8230919 Well thermal insulation for formation sampling of viscous fluids and methods of use thereof
07/31/2012US8230915 Apparatus, system, and method for determining injected fluid vertical placement
07/31/2012US8230913 Expandable device for use in a well bore
07/31/2012CA2729534A1 Pumping petroleum fluid from a well bore
07/31/2012CA2707011C Method for removing silica from evaporator concentrate
07/31/2012CA2702124C Water control device using electromagnetics
07/31/2012CA2677462C Treatment fluids comprising diutan and associated methods
07/31/2012CA2580091C Remote gas monitoring apparatus for seabed drilling
07/27/2012CA2763980A1 A subsurface safety valve including safe additive injection
07/27/2012CA2737624A1 Compact evaporator for modular portable sagd process
07/26/2012WO2012100242A2 Downhole sand control apparatus and method with tool position sensor
07/26/2012WO2012100165A1 Οn-board recovery and storage of c02 from motor vehicle exhaust gases
07/26/2012WO2012100012A2 Combined fracturing outlet and production port for a tubular string
07/26/2012WO2012099765A2 Varying pore size in a well screen
07/26/2012WO2012099648A2 System and method for controlling formation fluid particulates
07/26/2012WO2012099585A1 Perforating gun with variable free gun volume
07/26/2012WO2012097493A1 Oil-pumping machine
07/26/2012WO2012097440A1 High pressure multistage centrifugal pump for fracturing hydrocarbon reserves
07/26/2012WO2012097426A1 Fracturing system and method for an underground formation using natural gas and an inert purging fluid
07/26/2012WO2012097425A1 Fracturing system and method for an underground formation
07/26/2012WO2012097424A1 Method for fracturing a formation using a fracturing fluid mixture
07/26/2012WO2012097405A1 Hydraulic fracturing
07/26/2012WO2012068397A3 Methods to create high conductivity fractures that connect hydraulic fracture networks in a well
07/26/2012WO2012064425A3 Electrode
07/26/2012WO2012050699A3 Control system for extraction of hydrocarbons from underground deposits
07/26/2012WO2012024496A3 Methods for downhole sampling of tight formations
07/26/2012WO2011110815A3 Operational control of multiple valves in a well
07/26/2012US20120189771 On-the-Fly Coating of Acid-Releasing Degradable Material Onto a Particulate
07/26/2012US20120186827 Drive Head Assembly for a Fluid Conveyor System
07/26/2012US20120186819 Varying pore size in a well screen
07/26/2012US20120186816 Single-Assembly System and Method for One-Trip Drilling, Casing, Cementing and Perforating
07/26/2012US20120186815 Method and Composition to Prevent Fluid Mixing in Pipe
07/26/2012US20120186811 Methods for stimulating oil or gas production using a viscosified aqueous fluid with a chelating agent to remove calcium carbonate and similar materials from the matrix of a formation or a proppant pack
07/26/2012US20120186810 Method for mobility control in oil-bearing carbonate formations
07/26/2012US20120186803 Combined Fracturing Outlet and Production Port for a Tubular String
07/26/2012US20120186662 Gas lift nozzle valve
07/26/2012DE112010000769T5 Additive fur die Verbesserung von Motoröleigenschaften Additives for the improvement of engine oil properties
07/26/2012CA2824764A1 Downhole sand control apparatus and method with tool position sensor
07/26/2012CA2824677A1 Hydraulic fracturing
07/26/2012CA2824436A1 Varying pore size in a well screen
07/26/2012CA2824383A1 Downhole tools
07/26/2012CA2824206A1 Fracturing system and method for an underground formation using natural gas and an inert purging fluid
07/26/2012CA2824181A1 Fracturing system and method for an underground formation
07/26/2012CA2824169A1 Method for fracturing a formation using a fracturing fluid mixture
07/26/2012CA2823257A1 Combined fracturing outlet and production port for a tubular string
07/25/2012EP2478182A2 Water heating apparatus for continuous heated water flow and method for use in hydraulic fracturing
07/25/2012EP2478181A2 Fracturing and gravel packing tool with multi movement wash pipe valve
07/25/2012EP2288472B1 Abrasive cutting fluids
07/25/2012CN202348993U Cross beam bearing pedestal for beam-pumping unit
07/25/2012CN202348258U Gas-liquid separation and oil, water and gas three-phase measurement device
07/25/2012CN202348252U Gas, coal and water separation device
07/25/2012CN202348251U Adjustable constant flow water faucet
07/25/2012CN202348250U Adjustable injection and collection water nozzle
07/25/2012CN202348249U Underground layered oil extraction controlling device
07/25/2012CN202348248U Porous concentric integrated continuous quantificational bottom-hole regulator
07/25/2012CN202348247U Quadric-detonation composite perforating charge
07/25/2012CN202348246U Protective ring for oil-tube-transmitted composite perforator
07/25/2012CN202348245U Multi-shot directional fixed experiment perforator
07/25/2012CN202348244U Anchoring compensation device for branch well sieve tube
07/25/2012CN202348243U Stainless steel sand control pipe
07/25/2012CN202348242U High-strength micro-circular seam composite sand filtering pipe
07/25/2012CN202348241U Novel efficient precision composite sand filter pipe
07/25/2012CN202348240U Gravel filling water control and sand prevention integrated device
07/25/2012CN202348239U Sand control process pipe string for sealing check of sand control hung filter of horizontal well and sealing
07/25/2012CN202348238U Oil pumping machine with improved walking beam balance
07/25/2012CN202348237U Balance type twin-horse head beam balanced energy-saving pumping unit
07/25/2012CN202348236U Tail balance weight regulation device for bent beam pumping unit
07/25/2012CN202348235U Energy-saving over-pump thermal recovery system device for thick oil
07/25/2012CN202348234U Comprehensive, efficient and energy-saving walking-beam oil pumping machine
07/25/2012CN202348233U Energy-saving oil pumping machine
07/25/2012CN202348211U Complete equipment for preventing gas emission from drill hole
07/25/2012CN102612589A Flow control device that substantially decreases flow of a fluid when a property of the fluid is in a selected range
07/25/2012CN102606190A Method and device for using downward crossing hole to eliminate outburst in mining of coal mine
07/25/2012CN102606130A Gas-water separation connecting method for coal mine extraction drilled hole and connecting structure
07/25/2012CN102606129A Method and system for thin interbed oilfield development
07/25/2012CN102606128A Oil shale mining method and device
07/25/2012CN102606127A Gasification furnace underground water prevention and control method and device for underground coal gasification
07/25/2012CN102606126A Non-planar network fracturing control method for fractured reservoir
07/25/2012CN102606125A Simulator for researching hydraulic fracturing effect
07/25/2012CN102606124A Sectioned multi-cluster synchronous volume fracturing technology for double horizontal wells
07/25/2012CN102606123A Steam flooding assisted gravity drainage oil extracting method
07/25/2012CN102606122A Production process and thermal recovery process of multi-element hot fluid used for thickened oil storage
07/25/2012CN102606121A Multi-element thermal fluid production process for heavy oil reservoir and thermal recovery process
07/25/2012CN102606120A Steam flooding injection and production scheme determining method based on stochastic disturbance particle swarm optimization
07/25/2012CN102606119A Fixed-point gel-placing water shutoff profile control agent and use method thereof
07/25/2012CN102606118A Subdivision water injection, ball-off and profile control integrated tubular column for water injection well of oilfield and process of tubular column
07/25/2012CN102606117A Air and nitrogen alternating displacement exploitation method for mid-deep zone low-permeability thin oil reservoir
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