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)
02/2014
02/12/2014CN203430498U Injection device
02/12/2014CN203430497U Unconventional large-drift-diameter fracturing well head device
02/12/2014CN203430496U Fracturing manifold device
02/12/2014CN203430495U Automatic chemical dosing device for oil well sleeve
02/12/2014CN203430494U Constant-pressure/constant-flow water injecting device
02/12/2014CN203430493U 地面注水监测仪 Ground water monitoring instrument
02/12/2014CN203430492U Circular multi-well type intelligent constant-flow water distribution device
02/12/2014CN203430491U Bottom-hole regulator with blanking plug oil inlet cavity without dead angles
02/12/2014CN203430490U Horizontal well gravel filling tool
02/12/2014CN203430489U Adjustable horsehead swinging device
02/12/2014CN203430488U Permanent oil string
02/12/2014CN203430487U Device for recovering and enabling oil well casing gas to enter oil return pipeline with low casing pressure
02/12/2014CN203430486U Automatic drainage gas recovery control cabinet for coal-bed gas
02/12/2014CN203430476U Well fluid backflow control valve of pumping unit
02/12/2014CN203430473U Underground hydraulic fracturing drill hole sealing device of coal mine
02/12/2014CN103582741A Flow control screen assembly having remotely disabled reverse flow control capability
02/12/2014CN103582740A Air-freightable containment cap for containing a subsea well
02/12/2014CN103573614A Self-spiral metal ceramic valve assembly
02/12/2014CN103573405A Air-injection oil extraction exhaust gas combustion power-generation process
02/12/2014CN103573285A Cylindrical mining method for three-low coal bed to extract coal bed methane
02/12/2014CN103573263A Tight sandstone reservoir fracturing production horizontal well flowing pressure design method
02/12/2014CN103573252A Wireless indicator, wireless indicator system and indicator diagram measuring method thereof
02/12/2014CN103573245A 石油钻井液过滤装置 Oil drilling fluid filtration device
02/12/2014CN103573244A Method for fracturing guanidine gum in coal bed gas development based on low-temperature gum breaking
02/12/2014CN103573243A High-temperature-resistant and high-pressure-resistant fracturing capsule
02/12/2014CN103573242A Sliding sleeve spray nozzle for open hole fracturing
02/12/2014CN103573241A Casing cementing pressure balancing sliding sleeve annulus staged sand fracturing process for horizontal well
02/12/2014CN103573240A Hydraulic-type fracturing sliding sleeve opening and closing tool
02/12/2014CN103573239A Staged fracturing device and using method thereof
02/12/2014CN103573238A Method for degrading oil well fracturing fluid through biological enzyme
02/12/2014CN103573237A Telescopic gas injection and ignition device for underground gasification mining
02/12/2014CN103573236A Heated and pressurized water vapor direct-injection oil displacement device
02/12/2014CN103573235A Acidizing, pressure-decreasing and injection-increasing technique without replacing string for water injection well
02/12/2014CN103573234A Method for determining complete oil and water relative permeability curve
02/12/2014CN103573233A Method and device for exploiting natural gas hydrate in cryolithozone
02/12/2014CN103573232A Steam secondary heating and pressurization direct-injection device
02/12/2014CN103573231A Method for improving recovery ratio of sensitive heavy oil reservoir
02/12/2014CN103573230A Selective mining process and equipment thereof
02/12/2014CN103573229A Open hole oil production technology and separated pipe string
02/12/2014CN103573228A Petroleum filtering mechanism with pre-filtering function
02/12/2014CN103573227A Sand filtering pipe
02/12/2014CN103573226A Well completion sand prevention process and sand prevention strings thereof
02/12/2014CN103573225A Energy-saving pumping unit with pumping rods reciprocating through rotation of crankshafts and wire winding rope and ring
02/12/2014CN103573224A Technology for fishing oil under pressure
02/12/2014CN103573223A Automatic airlock eliminating device of electric submersible pump
02/12/2014CN103573222A Electric moving and unloading linkage motor direct-drive vertical type pumping unit
02/12/2014CN103573221A Electric-working abdicating and unloading linkage permanent-magnet-drive vertical type pumping unit
02/12/2014CN103573220A Novel gas-lift liquid discharge process of gas well drilling
02/12/2014CN103573219A Automatic frequency conversion device and method for pumping units
02/12/2014CN103573218A Intervention workover control system
02/12/2014CN103573215A Opening tool for openable sliding sleeve
02/12/2014CN103573200A Well flushing process and device
02/12/2014CN103571452A Acidizing corrosion inhibitor applicable to high temperature of 140 to 160 DEG C, and preparation and application thereof
02/12/2014CN103571451A Acidizing corrosion inhibitor applicable to high temperature of 120 to 140 DEG C, and preparation and application thereof
02/12/2014CN102996106B Online continuous production and injection integrating method and device for jelly dispersoid
02/12/2014CN102007268B Test procedure to determine concentration and relative distribution of sized particles in drilling fluid
02/12/2014CN101809249B Method to enhance proppant conductivity from hydraulically fractured wells
02/12/2014CN101715506B Hydrocarbons
02/12/2014CN101627179B Apparatus and method for controlled deployment of shape-conforming materials
02/12/2014CN101586458B Energy saving and efficiency increasing system
02/12/2014CN101555782B Tower frame type numerical control oil pumping unit
02/12/2014CA2835592A1 Method for producing oil from induced fractures using a single wellbore and multiple -channel tubing
02/11/2014US8646846 Method and apparatus for creating a planar cavern
02/11/2014US8646538 Methods for stable sequestration of carbon dioxide in an aquifer
02/11/2014US8646535 Flow restriction devices
02/11/2014US8646534 Well head containment fitting device
02/11/2014US8646530 Chemical diversion technique
02/11/2014US8646529 Method and system for treating a subterranean formation using diversion
02/11/2014US8646528 Compositions and methods relating to establishing circulation in stand-alone-screens without using washpipes
02/11/2014US8646527 Radio frequency enhanced steam assisted gravity drainage method for recovery of hydrocarbons
02/11/2014US8646523 Method and materials for proppant flow control with telescoping flow conduit technology
02/11/2014CA2813982C Process for solidifying organic and inorganic constituents contained in produced water from heavy oil operations
02/11/2014CA2742031C Improved downhole electrical submersible pump seal
02/11/2014CA2727885C Enhanced passive ranging methodology for well twinning
02/11/2014CA2724058C Steam driven pump for sagd system
02/11/2014CA2713749C Device, computer program product and computer-implemented method for backspin detection in an electrical submersible pump assembly
02/11/2014CA2626442C A separator tank for separation of fluid comprising water, oil and gas
02/11/2014CA2618838C Biogenic methane production using amendment stimulation
02/11/2014CA2616137C A shoe for wellbore lining tubing
02/11/2014CA2548477C Wellbore screen
02/07/2014CA2786217A1 Enhanced oil recovery initiated by zero emission in-situ combustion
02/06/2014WO2014022829A1 System and method for cooling a downhole gas generator
02/06/2014WO2014022626A1 Enhanced oil recovery methods using a fluid containing a sacrificial agent
02/06/2014WO2014022622A1 Enhanced oil recovery fluid containing a sacrificial agent
02/06/2014WO2014022616A1 Enhanced oil recovery methods using a fluid containing a sacrificial agent
02/06/2014WO2014022611A1 Single well inject-produce pilot for eor
02/06/2014WO2014022502A1 Fluid mixture for softening a downhole device
02/06/2014WO2014022393A2 Well configurations for limited reflux
02/06/2014WO2014022127A1 Monitoring and diagnosing water flooded reservoirs
02/06/2014WO2014022121A1 Telemetric chemical injection assembly
02/06/2014WO2014022105A1 Methods and systems for treating a wellbore
02/06/2014WO2014021983A1 Methods and systems related to hydrocarbon recovery strategy development
02/06/2014WO2014021899A1 Method and apparatus for remote zonal stimulation with fluid loss device
02/06/2014WO2014021740A1 Water intake filter
02/06/2014WO2014021736A1 Method for electromagnetic action on a downhole space during the recovery of hydrocarbon material
02/06/2014WO2012168088A3 Method for extracting shale gas
02/06/2014US20140039796 Method and System for Passive Electroseismic Surveying
02/06/2014US20140039067 Filamentous polymer particles and use thereof as rheology modifiers
02/06/2014US20140034635 Insulating blocks and methods for installation in insulated conductor heaters
02/06/2014US20140034476 Purification of water by heating with sunlight, via optical cable
1 ... 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 ... 642