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)
05/2010
05/12/2010CN201460844U Safe bullet clamp for perforating charge
05/12/2010CN201460843U Sieve tube for penetrating through coal seam in ground well drilling
05/12/2010CN201460842U Combined balance weight for oil pumping unit
05/12/2010CN201460841U Detachable pumping unit working platform
05/12/2010CN201460840U Pumping unit brake device capable of preventing pumping unit from sliding
05/12/2010CN201460839U Hydraulic lifting device for oil pipe power pump
05/12/2010CN201460838U Fast belt adjusting device of oil pumping unit motor
05/12/2010CN201460837U Belt disassembling device of oil pumping unit
05/12/2010CN201460836U Belt assembling and disassembling device of oil pumping unit
05/12/2010CN201460835U Wheel axle weight type double-rod hydraulic pumping unit
05/12/2010CN201460834U Solar remote alarm for run stopping of oil pumping unit
05/12/2010CN201460833U Selective oil production string
05/12/2010CN201460832U Portable energy-saving belt adjusting device
05/12/2010CN201460831U Separate-layer production string capable of changing combined layer
05/12/2010CN201460830U Linear motor lifting spring hydraulic pumping unit
05/12/2010CN201460829U Special chain oil pumping unit
05/12/2010CN201460828U Precise balance and energy saving type beam pumping unit with double horse heads
05/12/2010CN201460827U Anti-parting double-suspension-point braid capable of being secondarily used
05/12/2010CN201460826U Multi-layered production separate-pumping process pipe column
05/12/2010CN201460825U Oil pumping unit braided rope breaking wireless alarming self-stopping device
05/12/2010CN201460824U Direct-pumping type oil field pumping unit of permanent magnet disk type motor
05/12/2010CN201460823U Multifunctional double-acting hydraulic oil production device
05/12/2010CN201460822U Sucker rod string accelerator
05/12/2010CN201460821U Split-type well head operating floor
05/12/2010CN201460808U Novel striking oil draining apparatus
05/12/2010CN201460807U Sided oil drain device
05/12/2010CN201460787U Oil pipe spray and extract sealing device
05/12/2010CN201460782U Incremental oil device
05/12/2010CN201460772U Self-sealing sand-flushing device
05/12/2010CN201460769U Oil extractor mule-head hanger for preventing parting of baffle bolt
05/12/2010CN1831294B Nitrogen filling foam water-control oil-increasing technology
05/12/2010CN1690360B Method and system for exploiting seabed natural gas hydrates
05/12/2010CN101705812A Large-discharge single pipe layered polymer injection and injection allocation method and device
05/12/2010CN101705811A Chemical pressure decreasing and augmented injection technology for strong sensitivity oil layer water injection well
05/12/2010CN101705810A Segmented current controlling method of current controlling filter pipe column of oil-gas well having perforated pipe
05/12/2010CN101705809A Segmented current controlling method of current controlling filter pipe column of oil-gas well having sand control pipe
05/12/2010CN101705808A Sectional flow control method for flow control filter pipe column of oil-gas well with bushing outside channel
05/12/2010CN101705807A Protective cover of petroleum perforation charge
05/12/2010CN101705806A Double-balance oil extractor
05/12/2010CN101705805A Well-head shutoff pressure prevention and casting head gas recovery integrated device
05/12/2010CN101705804A Indirect pull-type double-end wire rope type oil pumping machine capable of working independently
05/12/2010CN101705802A Anti-crossflow packing particles for production sections of oil and gas wells
05/12/2010CN101704404A Vessel
05/12/2010CN101213426B Method and device for measuring the density of one component in a multi-component flow
05/12/2010CN101131074B Hanger of minor-diameter pipe subsurface agent and gas pouring device
05/12/2010CN101105123B Vertical oil-water-gas multiphase flow separating and commutating device, and measuring device thereof
05/12/2010CN101099273B Means for transferring electric power in a turret-moored vessel and method of assembly
05/11/2010US7713918 for subterranean formation treatments, such as hydraulic fracturing treatments and sand control; for use as lightweight materials in liquid carbon dioxide-based well treatment systems; well bores; well completion
05/11/2010US7713841 Methods for thinning semiconductor substrates that employ support structures formed on the substrates
05/11/2010US7712539 Riser for connection between a vessel and a point at the seabed
05/11/2010US7712537 Method and apparatus for continuously injecting fluid in a wellbore while maintaining safety valve operation
05/11/2010US7712535 Oxidative systems for breaking polymer viscosified fluids
05/11/2010US7712534 Treatment fluids having biocide and friction reducing properties and associated methods
05/11/2010US7712533 Method for treating a subterranean formation with water-in-oil emulsion
05/11/2010US7712532 Energized fluids and pressure manipulation for subsurface applications
05/11/2010US7712529 Sand control screen assembly and method for use of same
05/11/2010US7712528 Process for dispersing nanocatalysts into petroleum-bearing formations
05/11/2010US7712526 Proppant suspension testing devices and methods of use
05/11/2010US7712525 Determination of well shut-in time for curing resin-coated proppant particles
05/11/2010US7712524 Measuring a characteristic of a well proximate a region to be gravel packed
05/11/2010US7712522 Expansion cone and system
05/11/2010CA2690039A1 Swellable apparatus and method
05/11/2010CA2685235A1 Wellbore apparatus and method
05/11/2010CA2529467C Motors for electric submersible pumps
05/11/2010CA2509115C A mixture of resin coated and uncoated proppant or gravel pack and methods of consolidating the same
05/11/2010CA2471488C Bore isolation
05/11/2010CA2463953C System for lining a section of a wellbore
05/11/2010CA2463175C Gas turbine for oil lifting
05/11/2010CA2444826C Low density proppant
05/11/2010CA2264974C Acid gels for fracturing subterranean formations
05/06/2010WO2010051301A1 Coiled tubing conveyed combined inflow and outflow control devices
05/06/2010WO2010051255A1 Multi-point chemical injection system
05/06/2010WO2010051253A1 Crystalline ceramic particles
05/06/2010WO2010051197A2 Improved downhole electrical submersible pump seal
05/06/2010WO2010051187A1 Measurement and control of liquid level in wells
05/06/2010WO2010049781A1 Separator arrangement and method for gas by-pass of a liquid pump in a production system
05/06/2010WO2010049474A1 Device and method for remediating and separating gas accumulations in waterways
05/06/2010WO2010048969A1 Subsea gravity separator
05/06/2010WO2010026215A3 Lining of well bores with expandable and conventional liners
05/06/2010WO2010003088A3 Methods for downhole sequestration of carbon dioxide
05/06/2010WO2009120090A3 A collection device and method of using same
05/06/2010US20100108378 Perforation Tool with Switch
05/06/2010US20100108322 Parallel drilling and completion for a dry tree floating production facility
05/06/2010US20100108321 Apparatus for venting an annular space between a liner and a pipeline of a subsea riser
05/06/2010US20100108320 Subsurface safety valve for chemical injection
05/06/2010US20100108319 Reduced Waste Cleaning Methods for Oil Well Related Systems
05/06/2010US20100108318 Method and device for the in-situ extraction of a hydrocarbon-containing substance, while reducing the viscosity thereof, from an underground deposit
05/06/2010US20100108317 Passive Heating Assisted Recovery Methods
05/06/2010US20100108316 Method of improving recovery from hydrocarbon reservoirs
05/06/2010US20100108315 Method for reducing the H2S content of an H2S-containing subterranean formation
05/06/2010US20100108313 Coiled tubing conveyed combined inflow and outflow control devices
05/06/2010US20100108311 Calorimetric distributed temperature system and methods
05/06/2010US20100108310 Offset barrier wells in subsurface formations
05/06/2010US20100108309 Downhole Fluid Injection Dispersion Device
05/06/2010US20100108307 System, method and apparatus for gas extraction device for down hole oilfield applications
05/06/2010US20100108305 Reducing the energy requirements for the production of heavy oil
05/06/2010US20100107753 Method of detecting a lateral boundary of a reservoir
05/06/2010CA2752507A1 Device and method for remediating and separating gas accumulations in waterways
05/06/2010CA2742031A1 Improved downhole electrical submersible pump seal
05/06/2010CA2741004A1 Subsea gravity separator
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