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)
12/2007
12/05/2007CN100353022C Surface flow controlled valve and screen
12/05/2007CN100352884C Oil well acidification composition
12/05/2007CA2838365A1 Recycling hydrocarbon hydraulic stimulation fluid
12/05/2007CA2767103A1 Recycling hydrocarbon hydraulic stimulation fluid
12/04/2007US7303029 Filter for a drill string
12/04/2007US7303023 Coupling and sealing tubulars in a bore
12/04/2007US7303019 Viscoelastic surfactant fluids and associated diverting methods
12/04/2007US7303018 Introducing amidoamine oxide gelling agent and an acid, water and/or brine, and a gas; diverting the flow of the acid stage from high permeability portions of the formation to low permeability portions of the formation, generating a gelled viscoelastic foam,
12/04/2007US7303017 Perforating gun assembly and method for creating perforation cavities
12/04/2007US7303016 Casing with isolated annular space
12/04/2007US7303012 Propped fracture with high effective surface area
12/04/2007US7303006 Method for improved vertical sweep of oil reservoirs
12/04/2007CA2571670C Downhole surge pressure reduction and filtering apparatus
12/04/2007CA2493354C Method and system for extraction of resources from a subterranean well bore
12/04/2007CA2490077C Method for treating subterranean formation
12/04/2007CA2482335C Wellhead isolation tool and method of fracturing a well
12/04/2007CA2413395C Method and device for perforating a portion of casing in a reservoir
12/04/2007CA2378518C Downhole anchoring tools conveyed by non-rigid carriers
12/04/2007CA2326714C New and improved drilling fluids and additives therefor
12/04/2007CA2296054C Computer controlled injection wells
12/02/2007CA2549369A1 Heavy oil recovery method and apparatus
11/2007
11/30/2007CA2592491A1 Microwave process for intrinsic permeability enhancement and hydrocarbon extraction from subsurface deposits
11/30/2007CA2549342A1 Apparatus for separating solids from liquids
11/29/2007WO2007137153A2 Systems and methods for producing oil and/or gas
11/29/2007WO2007137061A2 Recovery of hydrocarbons using horizontal wells
11/29/2007WO2007136978A2 Dropping sub method and apparatus
11/29/2007WO2007135445A1 Pump system for zonal isolation testing
11/29/2007WO2007134598A1 Flow simulation in a well or pipe
11/29/2007WO2007114775A3 Method and device for producing a gaseous medium comprising steam
11/29/2007WO2007091897A3 Fluid injection device
11/29/2007WO2007061722A3 Separatory and emulsion breaking processes
11/29/2007US20070272419 Threaded Connection for Expandable Tubulars
11/29/2007US20070272416 Hydraulic downhole oil recovery system
11/29/2007US20070272411 System for completing multiple well intervals
11/29/2007US20070272410 Flow Control System For Use In A Wellbore
11/29/2007US20070272409 Energized fluid for generating self-cleaning filter cake
11/29/2007US20070272408 Flow control using a tortuous path
11/29/2007US20070272406 System, method, and apparatus for downhole submersible pump having fiber optic communications
11/29/2007US20070272405 Ribbed sealing element and method of use
11/29/2007US20070271981 Apparatus for expanding a tubular member
11/29/2007DE102006024725A1 Natural gas conveying bore-hole sealing method, involves feeding fluid into conveying bore-hole, conveying minerals containing water through fluid for precipitation, and feeding high saliniferous solution into bore-hole under pressure
11/29/2007CA2652401A1 Systems and methods for producing oil and/or gas
11/29/2007CA2652159A1 Recovery of hydrocarbons using horizontal wells
11/28/2007EP1860277A2 Apparatus and methods to protect connections
11/28/2007EP1859125A1 Use of water-soluble alkane sulfonic acids for increasing the permeability of underground petroliferous and/or gas-bearing carbonate rock formations and for dissolving carbonate contaminants and/or contaminants containing carbonates during petroleum production
11/28/2007EP1859124A1 Sound source for stimulation of oil reservoirs
11/28/2007EP1859001A1 Methods of creating high porosity propped fractures
11/28/2007EP1611314B1 A method and apparatus for treatment of water for an injection well
11/28/2007EP1242881B1 Method and system for simulating a hydrocarbon-bearing formation
11/28/2007CN200982384Y Automatic belt tensioner
11/28/2007CN200982289Y Linear motor submersible reciprocal oil extraction pump
11/28/2007CN200982288Y Highly energy-saving low cost hydraulic balanced type oil pumping unit
11/28/2007CN200982287Y Lateral opening type hydraulic feed back oil pump
11/28/2007CN200982189Y Composite perforator dynamic test device
11/28/2007CN200982188Y Highly-efficient free water removing device
11/28/2007CN200982187Y Fracturing water power jet pump
11/28/2007CN200982186Y Double well two-wheeled type oil pump unit
11/28/2007CN200982185Y Coal layer gas water-discharging gas extraction machine driven by motor
11/28/2007CN200982184Y Metering, operating mode analysis optimization system for oil well liquid-producing capacity
11/28/2007CN200982183Y Hydraulic oil pumping unit
11/28/2007CN200982182Y Oil extractor
11/28/2007CN101080549A Method of sealing an annular space in a wellbore
11/28/2007CN101078394A Drop type dosing pump device
11/28/2007CN101078346A Double-volume gas-free metering separator
11/28/2007CN101078345A Oil field extraction liquid electromagnetic agglomerating pretreatment device
11/28/2007CN101078344A Oil field oil water and mud closed emptying recovery system
11/28/2007CN101078343A Fracturing technique for relieving fracturing fluid pollution
11/28/2007CN101078342A Geothermal steam drive oil extraction method and device
11/28/2007CN101078341A Oil gas water well open hole filling sand prevention completion method and tool
11/28/2007CN101078340A Stroke adjustable energy-saving hydraulic pumping unit
11/28/2007CN101078339A Multiple tubular pile type bar-free gas-production oil-production method and device
11/28/2007CN101078338A Automatic intermittent mine mouth oil pumping method and device
11/28/2007CN101078123A Water-base carried non-active nitric acid acidification inhibitor
11/28/2007CN100351492C Underground gasification furnace regulation control system
11/28/2007CN100351491C Thermal recovery method for coal seam gas
11/27/2007US7299882 Annular isolators for expandable tubulars in wellbores
11/27/2007US7299881 Radial expansion of tubular members
11/27/2007US7299880 Surge reduction bypass valve
11/27/2007US7299879 Thermodynamic pulse lift oil and gas recovery system
11/27/2007US7299878 High pressure multiple branch wellbore junction
11/27/2007US7299877 Forming a foamed fracturing fluid comprising:water; an orthoester; a surfactant; introducing the foamed fracturing fluid into a subterranean formation at a pressure sufficient to create a fracture in the subterranean formation
11/27/2007US7299876 Providing a viscosified treatment fluid comprising a single salt aqueous fluid, contacting the portion of the subterranean formation with a viscosified treatment fluid to create or enhance one or more fractures therein, wherein viscosified treatment fluid is introduced into a well bore that penetrates
11/27/2007US7299875 Methods for controlling particulate migration
11/27/2007US7299874 Viscoelastic surfactant fluids and associated methods
11/27/2007US7299873 Method for pumping fluids
11/27/2007US7299870 Self diverting matrix acid
11/27/2007US7299869 Carbon foam particulates and methods of using carbon foam particulates in subterranean applications
11/27/2007US7299868 Method and system for recovery of hydrocarbons from a hydrocarbon-bearing information
11/27/2007US7299864 Adjustable window liner
11/27/2007CA2524554C Electrical energy from a wellbore light cell
11/27/2007CA2471542C Shot direction indication device
11/27/2007CA2462031C Tubing expansion by hoop and compression yield
11/27/2007CA2461851C Hydraulically assisted tubing expansion
11/27/2007CA2460712C Pass through valve and stab tool
11/27/2007CA2447672C Lining and drilling a wellbore with an expandable bit
11/27/2007CA2414428C Liner hanger with standoffs
11/27/2007CA2264632C Wellbores utilizing fiber optic-based sensors and operating devices
11/27/2007CA2260191C Method for expanding a steel tubing and well with such a tubing
11/23/2007CA2585739A1 Flow control system for use in a wellbore
11/22/2007WO2007133557A2 Data handling for high frequency chest wall oscillation system
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