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)
02/2010
02/24/2010CN201412125Y Beam stroke-increasing oil pumping unit with automatic variable moment balance and rotating horse head
02/24/2010CN201412124Y Safety top screw for fixing balance weight of oil pumping unit
02/24/2010CN201412123Y Buffer for oil pumping unit
02/24/2010CN201412122Y Roller toggle type energy-saving oil pumping unit for twin-well
02/24/2010CN201412106Y Well-head protector
02/24/2010CN201412088Y Double-layer type dead space adjusting sleeve
02/24/2010CN201412078Y Novel heat-insulated pipe heat-insulated pipe nipple
02/24/2010CN101657605A Multicomponent viscoelastic surfactant fluid and method of using as a fracturing fluid
02/24/2010CN101655007A Well completion technique for efficiently controlling pressure and retaining water cone of horizontal well
02/24/2010CN100591742C Method of raising oil deposit crude petroleum recovery ratio
02/23/2010US7665536 System and method for preventing cross-flow between formations of a well
02/23/2010US7665535 Rigless one-trip system and method
02/23/2010US7665532 Pipeline
02/23/2010US7665531 Apparatus for facilitating the connection of tubulars using a top drive
02/23/2010US7665526 System and method for downhole operation using pressure activated and sleeve valve assembly
02/23/2010US7665525 Reducing the energy requirements for the production of heavy oil
02/23/2010US7665523 Treating tar sand or tar resident in well bore by contacting the tar sand with treatment fluid comprising an aqueous fluid and a styrene-acrylate polymer, the tar sand comprising tar and sand, and allowing styrene-acrylate polymers to interact with tar to separate tar from sand
02/23/2010US7665522 Fiber laden energized fluids and methods of use
02/23/2010US7665517 Methods of cleaning sand control screens and gravel packs
02/23/2010CA2635161C Downhole tubular string connections
02/23/2010CA2596201C Casing expansion and formation compression for permeability plane orientation
02/23/2010CA2591498C Recovery process
02/23/2010CA2580590C Apparatus and method of fracturing
02/23/2010CA2560207C Tagged propping agents and related methods
02/23/2010CA2483957C Method of drilling and completing multiple wellbores inside a single caisson
02/23/2010CA2445455C Electrical well heating system and method
02/21/2010CA2675341A1 Downhole mechanisms
02/19/2010CA2675819A1 Method for completion, maintenance and stimulation of oil and gas wells
02/18/2010WO2010019737A2 In-flow control device utilizing a water sensitive media
02/18/2010WO2010019678A1 Power generation
02/18/2010WO2010019673A1 Well completion system
02/18/2010WO2010019657A1 Bitumen production method
02/18/2010WO2010019424A1 Proppants coated by piezoelectric or magnetostrictive materials, or by combinations thereof
02/18/2010WO2010019052A1 Device for separating and collecting fluid in gas from a reservoir
02/18/2010WO2010018844A1 Storing device for stored substance and method for storing stored substance
02/18/2010WO2010018356A2 Fluid supply system
02/18/2010WO2010018355A2 Top suction fluid end
02/18/2010WO2009146713A8 A pumping device for pumping fluid
02/18/2010WO2009134544A3 Downhole barrier valve
02/18/2010US20100042326 Method of detecting a lateral boundary of a reservoir
02/18/2010US20100038091 System and method for deployment of a subsea well intervention system
02/18/2010US20100038090 Umbilical termination assemblies
02/18/2010US20100038088 Multi-function multi-hole drilling rig
02/18/2010US20100038087 Erosion mitigating apparatus and method
02/18/2010US20100038086 Conformance Control Through Stimulus-Responsive Materials
02/18/2010US20100038083 Proppants coated by piezoelectric or magnetostrictive materials, or by mixtures or combinations thereof, to enable their tracking in a downhole environment
02/18/2010US20100038082 Portable renewable energy system for enhanced oil recovery (preseor) using biomass having net negative co2 emissions and for generating electricity having zero co2 emissions
02/18/2010US20100038081 Method for removing silica from evaporator concentrate
02/18/2010US20100038080 Method and apparatus for programmable robotic rotary mill cutting of multiple nested tubulars
02/18/2010US20100038078 Down-hole liquid level control for hydrocarbon wells
02/18/2010US20100038077 Method for Centralized Proppant Storage and Metering
02/18/2010US20100038071 Multi-Stage Spring For Use With Artificial Lift Plungers
02/18/2010US20100038070 Top suction fluid end
02/18/2010US20100037716 Clampless adjustable polish rod and well drilling equipment comprising same
02/18/2010CA2733683A1 Power generation
02/18/2010CA2733594A1 Wireline retrievable dsg/downhole pump system for cyclic steam and continuous steam flooding operations in petroleum reservoirs
02/18/2010CA2732888A1 In-flow control device utilizing a water sensitive media
02/18/2010CA2732779A1 Device for separating and collecting fluid in gas from a reservoir
02/18/2010CA2732778A1 Storing device for stored substance and method for storing stored substance
02/18/2010CA2732456A1 Bitumen production method
02/17/2010EP2153025A2 Real time closed loop interpretation of tubing treatment systems and methods
02/17/2010EP2153023A2 Completion method for fracturing and gravel packing
02/17/2010EP2153022A2 Methods for maximizing second fracture length
02/17/2010EP2153021A1 Method for producing fuel and power from a methane hydrate bed
02/17/2010EP2153020A2 Apparatus and method for expanding tubular elements
02/17/2010EP2153018A2 Bottom-surface connection installation comprising an elastic damping device taking the tension of the top end of a rigid subsurface duct
02/17/2010EP2153008A2 Power transmission system for use with downhole equipment
02/17/2010EP2152832A1 Use of elastomers to produce gels for treating a wellbore
02/17/2010EP2019988B1 Flow simulation in a well or pipe
02/17/2010CN201407204Y Thrust and straightening double-functional wear resistant bearing of submersible pump
02/17/2010CN201407200Y Injection process tubular column of inverted submersible pump
02/17/2010CN201407189Y High-efficiency gas-liquid centrifugal pump
02/17/2010CN201407182Y Low-speed direct-drive submersible electric screw pump unit
02/17/2010CN201407153Y Multi-cylinder combined full balance hydraulic pumping unit
02/17/2010CN201407152Y Concentric-tube column power liquid closed-type circulating hydraulic piston pump
02/17/2010CN201407030Y Homocentric intelligent water distribution downhole test and modification apparatus
02/17/2010CN201407026Y Mud degasser for scientific drilling
02/17/2010CN201407025Y Oil-water separation device
02/17/2010CN201407024Y High-efficiency oil-gas-water three-phase separator
02/17/2010CN201407023Y Surging-prevention self-closed gas distribution device
02/17/2010CN201407022Y Hydraulic drive type mixer for polymer injection
02/17/2010CN201407021Y Gas well two-function medicine device
02/17/2010CN201407020Y Back extension device
02/17/2010CN201407019Y Novel sleeve type filter component
02/17/2010CN201407018Y Novel oilfield pumping device
02/17/2010CN201407017Y Tower type numerical control oil extractor
02/17/2010CN201407016Y Single-machine multi-well horizontal flexible energy-saving pumping unit
02/17/2010CN201407015Y Multipurpose antitheft pressure lever screw
02/17/2010CN201407014Y Retractable motor jack screw joint
02/17/2010CN201407005Y Dual-use wellhead device for steam injection and oil production
02/17/2010CN201406998Y Eccentric-abrasion prevention device of oil well
02/17/2010CN201404774Y Fast polymer dissolving system
02/17/2010CN201404712Y Oil water separating device
02/17/2010CN101649735A Method, system and device for identifying combustion state of underground coal gasification furnace
02/17/2010CN101649734A Method for integrally catalyzing, reforming, reducing viscosity, extracting and transporting thick oil
02/17/2010CN101649733A Concentric type integrated test modification water injection technology and device
02/17/2010CN101649732A Sand recontrol technology without moving sand control pipe columns
02/17/2010CN101649731A Taper cutting pick with reinforcing hoop structure
02/17/2010CN101649730A Separate-layer restriction production string
02/16/2010USRE41118 Annular isolators for expandable tubulars in wellbores
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