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
08/08/2012CN102199345B Polysiloxanes modified polyurethane for drillable sand-screening pipe, and its preparation method and application
08/08/2012CN101737022B Semilunar beam through type crank outer support arm twin-well pumping unit
08/07/2012US8238730 High voltage temperature limited heaters
08/07/2012US8236864 Saponified fatty acids as breakers for viscoelastic surfactant-gelled fluids
08/07/2012US8236738 Control of particulate entrainment by fluids
08/07/2012US8236737 Particles comprising a fluorinated siloxane and methods of making and using the same
08/07/2012US8236736 Oil-based insulating packer fluid
08/07/2012US8236734 Method for preventing scale formation in the presence of dissolved iron
08/07/2012US8235141 Procedure and device for the optimal, utilization of carbon resources such as oil fields, oil shales, oil sands, coal, and CO2
08/07/2012US8235128 Flow path control based on fluid characteristics to thereby variably resist flow in a subterranean well
08/07/2012US8235119 Drilling fluid and method for reducing lost circulation
08/07/2012US8235118 Generating heated fluid
08/07/2012US8235117 Integrated in situ retorting and refining of heavy-oil and tar sand deposits
08/07/2012US8235114 Method of fracturing and gravel packing with a tool with a multi-position lockable sliding sleeve
08/07/2012US8235113 Method of improving recovery from hydrocarbon reservoirs
08/07/2012US8235112 Gas flow system
08/07/2012US8235111 Down-hole liquid level control for hydrocarbon wells
08/07/2012US8235110 Preconditioning an oilfield reservoir
08/07/2012US8235107 Hydraulic oil well pumping apparatus
08/07/2012CA2764764A1 Indexing sleeve for single-trip, multi-stage fracing
08/07/2012CA2730875A1 Wellbore injection system
08/07/2012CA2696638C Use of a solvent-external emulsion for in situ oil recovery
08/07/2012CA2678473C Method and device for the in-situ extraction of a hydrocarbon-containing substance, while reducing the viscosity thereof, from an underground deposit
08/07/2012CA2668533C Downhole anchoring tools conveyed by non-rigid carriers
08/07/2012CA2650617C Method and apparatus for capture and sequester of carbon dioxide and extraction of energy from large land masses during and after extraction of hydrocarbon fuels or contaminants using energy and critical fluids
08/07/2012CA2627141C Inflow control device
08/07/2012CA2579278C Method for mapping geometrical features using opto-electronic arrays
08/07/2012CA2552722C Expandable connection
08/07/2012CA2499007C Bottom plug for forming a mono diameter wellbore casing
08/07/2012CA2493321C System for acquiring data from a facility and method
08/07/2012CA2483399C Thermally-controlled valves and methods of using the same in a wellbore
08/02/2012WO2012103052A2 Well deployed heat fin for esp motor
08/02/2012WO2012101120A1 Phosphorous foaming agents which are stable at high temperatures
08/02/2012WO2012100320A1 Modular transportable system for sagd process
08/02/2012WO2012100319A1 Compact evaporator for modular portable sagd process
08/02/2012WO2012082617A3 Method for recycling deoiled water using counterflow falling-film evaporators
08/02/2012WO2012061202A3 Method and apparatus for creating an annular barrier in a subterranean wellbore
08/02/2012WO2012054440A4 Offshore tower for drilling and/or production
08/02/2012WO2012051007A3 Stabilizing emulsified acids for carbonate acidizing
08/02/2012WO2012045060A3 Zonal contact with cementing and fracture treatment in one trip
08/02/2012WO2012012092A3 Apparatus and method for heating of hydrocarbon deposits by axial rf coupler
08/02/2012WO2012003971A3 Underwater drive unit for offshore use having a high-voltage direct-current supply, and underwater drive system
08/02/2012US20120193143 Pre-verification of perforation alignment
08/02/2012US20120193103 Method and apparatus for recovering methane from hydrate near the sea floor
08/02/2012US20120193099 Temperature limited heater utilizing non-ferromagnetic conductor
08/02/2012US20120193095 Hydrocarbon Recovery Operations Fluids and Methods For Using the Same
08/02/2012US20120193094 Multiple infill wells within a gravity-dominated hydrocarbon recovery process
08/02/2012US20120193093 Modular Transportable System For SAGD Process
08/02/2012US20120193091 Plunger lift control system arrangement
08/02/2012CA2826105A1 Well deployed heat fin for esp motor
08/02/2012CA2766664A1 Electrolyzed water-amine compositions and methods of use
08/01/2012EP2480756A2 Method for controlling fluid production from a wellbore by using a script
08/01/2012EP2480755A2 Foamers for downhole injection
08/01/2012EP2480754A2 Inflow control device and methods for using same
08/01/2012EP2480753A2 Multi-layered sound attenuation mechanism
08/01/2012EP2480752A2 A system and apparatus for well screening including a foam layer
08/01/2012EP2480624A2 Foamers for downhole injection
08/01/2012EP2126283B1 Perforation tool with switch
08/01/2012EP1815101B1 Methods and apparatus for drilling, completing and configuring u-tube boreholes
08/01/2012CN202362667U Control system of beam pumping unit
08/01/2012CN202360677U Counterweight box for tower type oil pumping device
08/01/2012CN202360079U Radial wobble rotary mechanism of core model
08/01/2012CN202360078U Underground electrically controlled variable flow control valve
08/01/2012CN202360077U Pulley-type eccentric rack reversing oil pumping unit
08/01/2012CN202360076U Main frame of tower type pumping unit with bottom motor
08/01/2012CN202360075U Main frame of tower-type oil pumping unit
08/01/2012CN202360074U Two-side telescopic tower type underlying twin-well pumping unit
08/01/2012CN202360073U Air-cooled electric roller with brake mechanism of tower type pumping unit
08/01/2012CN202360072U Weight box with position-limiting device for oil pumping machine
08/01/2012CN202360071U Wire belt swaying preventer for tower pumping unit
08/01/2012CN202360070U Guide wheel turnover well leaving device of tower type pumping unit
08/01/2012CN202360069U Device for preventing nylon belt from swaying with wind for tower type pumping unit
08/01/2012CN202360068U Double-brake driving mechanism for tower type pumping unit
08/01/2012CN202360067U Driving mechanism of derrick framed pumping unit
08/01/2012CN202360066U Upper platform of tower-type oil pumping unit
08/01/2012CN202360065U Variable torque type pumping unit
08/01/2012CN202360064U Eccentric wearing prevention and deloading device of sucker rod of oil sucking machine
08/01/2012CN202360063U Automatic degassing and recovering device for oil well casing
08/01/2012CN202360062U Compound balanced type long-stroke pumping unit
08/01/2012CN202360061U Underneath pumping unit
08/01/2012CN202360047U Adjustable power-measurement type rope hanging device of tower type pumping unit
08/01/2012CN202360046U Polished rod eye slightly-adjusting device
08/01/2012CN202358889U Belt clamp type stroke limit device of twin-well double-pumping unit
08/01/2012CN202358860U Belt pressing mechanism for driving drum of tower type pumping unit
08/01/2012CN102625873A Methods to reduce settling rate of solids in a treatment fluid
08/01/2012CN102619552A Directional hydraulic pressing penetration, permeability increase and outburst elimination method of guide groove
08/01/2012CN102619499A Method for monitoring distribution of coal underground gasification temperature zones
08/01/2012CN102619497A Treating agent as well as method and device for continuously reducing hydrogen sulfide in oil well shaft
08/01/2012CN102619496A Method for layering, stage multi-level blasting, hole expanding and crack expanding of oil-gas-bearing rock
08/01/2012CN102619495A Multi-section delaminated fracturing tool string for vertical shaft immovable pipe column
08/01/2012CN102619494A Multi-section sliding sleeve type sand jet perforating and fracturing tool
08/01/2012CN102619493A Method and combination device for controlling profile and blocking water for thickened oil horizontal well of screen pipe well completion
08/01/2012CN102619492A Polymer flooding alternating injection method of heterogeneous oil reservoir
08/01/2012CN102619491A Operating and maintaining device for oil pumping unit
08/01/2012CN102619490A Balancing device of electronic control and hydraulic drive automatic adjusting oil pumping unit
08/01/2012CN102619485A Building block type salvage process for sand prevention tubular columns
08/01/2012CN102618250A Preparation method of environmental-friendly demulsify-cleanup additive for fracture acidizing
08/01/2012CN102618243A Coagulation-reducing viscosity-reducing agent for high-coagulation thickened oil
08/01/2012CN102618229A High-temperature resistant grain profile control and water shutoff agent as well as production method and application method thereof
08/01/2012CN102617800A Delay intumescent profile control blocking agent and application method thereof
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