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)
11/2012
11/07/2012CN102022134B Drilling, pressing and vibrating combined pressure-relieving coal bed gas exploitation method
11/07/2012CN102010704B Viscoelastic surfactant cleaning fracturing fluid gel breaker and field construction method
11/07/2012CN101787872B Multi-parameter energy-saving control method for watering pipe network of oil field
11/07/2012CN101781552B Bio-enzyme gel breaker and technique for water-based guargum fracturing gel breaking with the same
11/07/2012CN101503954B Water faucet for adjustable plugging device
11/07/2012CN101446187B Twin packer hydro-jet fracturing technology
11/07/2012CN101280782B Electric submersible pumping system with gas vent
11/07/2012CA2788203A1 In situ retorting and refining of hydrocarbons and a selected metal from oil shale, tar sands and depleted oil and gas deposits
11/06/2012US8302695 Downhole systems and methods for deliquifaction of a wellbore
11/06/2012US8302694 Flow control system having an isolation device for preventing gas interference during downhole liquid removal operations
11/06/2012US8302691 Methods for increasing gas production from a subterranean formation
11/06/2012US8302690 Method of drilling and opening reservoir using an oriented fissure to enhance hydrocarbon flow
11/06/2012US8302688 Method of optimizing wellbore perforations using underbalance pulsations
11/06/2012US8302684 Controlling the flow of a multiphase fluid from a well
11/06/2012US8302683 Biogenic fuel gas generation in geologic hydrocarbon deposits
11/06/2012US8302681 Well screens constructed utilizing pre-formed annular elements
11/06/2012US8302680 Swellable screen assembly
11/06/2012US8302310 Method of making a sand screen on a base pipe
11/06/2012CA2776389A1 Non-direct contact steam generation
11/06/2012CA2724401C Using nanoparticles for water flow control in subterranean formations
11/06/2012CA2686744C Method of hydraulically fracturing a formation
11/06/2012CA2663660C Oxidative internal breaker for viscoelastic surfactant fluids
11/06/2012CA2548748C Method of creating a zonal isolation in an underground wellbore
11/05/2012CA2741907A1 Controlled aperture ball drop
11/02/2012CA2769943A1 Electric cable, electric motor and electric submersible pump
11/01/2012WO2012149431A2 Casing relief valve
11/01/2012WO2012149318A2 Expansion system for an expandable tubular assembly
11/01/2012WO2012149224A2 Expandable open-hole anchor
11/01/2012WO2012149202A2 Subsea accumulator system
11/01/2012WO2012149104A2 Methods of establishing and/or maintaining flow of hydrocarbons during subsea operations
11/01/2012WO2012149095A2 Apparatus and methods for use in establishing and/or maintaining controlled flow of hydrocarbons during subsea operations
11/01/2012WO2012149094A2 Apparatus and methods for establishing and/or maintaining controlled flow of hydrocarbons during subsea operations
11/01/2012WO2012149080A2 Marine subsea riser systems and methods
11/01/2012WO2012149025A1 In situ radio frequency catalytic upgrading
11/01/2012WO2012149007A2 Functionally gradient composite article
11/01/2012WO2012148993A2 Subsea dispersant injection systems and methods
11/01/2012WO2012148819A1 Composites for controlled release of well treatment agents
11/01/2012WO2012148749A2 Load balancing spherical diameter single seat ball system
11/01/2012WO2012148736A1 Metering process and device for performing the process
11/01/2012WO2012148581A2 Method of enhancing the effectiveness of a cyclic solvent injection process to recover hydrocarbons
11/01/2012WO2012148578A2 Centrifugal subterranean debris collector
11/01/2012WO2012148429A1 Shock load mitigation in a downhole perforation tool assembly
11/01/2012WO2012148288A1 Subsea well assembly and associated method
11/01/2012WO2012146895A1 Treatment fluids containing biodegradable chelating agents and methods for use thereof
11/01/2012WO2012146727A1 Downhole casing system
11/01/2012WO2012146234A2 Reverse rotation protection for borehole pumps
11/01/2012WO2012125219A3 Methods for treating siliciclastic hydrocarbon-bearing formations with fluorinated amine oxides
11/01/2012WO2012118571A3 Hydraulic fracture diverter apparatus and method thereof
11/01/2012WO2012106636A3 Device for verifying detonator connection
11/01/2012WO2012091986A3 Process for the preparation of conformable materials for downhole screens
11/01/2012WO2012082492A3 Controlling flow between a wellbore and an earth formation
11/01/2012WO2012038814A3 Process for the fluidification of a high-viscosity oil directly inside the reservoir by injections of vapour
11/01/2012WO2012004652A3 Method and device for sealing leaks on media-conducting structures
11/01/2012US20120273237 Expansion system for an expandable tubular assembly
11/01/2012US20120273236 Expandable open-hole anchor
11/01/2012US20120273235 Flow-induced electrostatic power generator for downhole use in oil and gas wells
11/01/2012US20120273234 Flow-induced electrostatic power generator for downhole use in oil and gas wells
11/01/2012US20120273231 Downhole release joint
11/01/2012US20120273227 Casing relief valve
11/01/2012US20120273222 Dynamic seal pad plunger arrangement
11/01/2012US20120273221 Smart Hydraulic Pumping Device for Recovery of Oil and Obtaining of Information from the Bottom of the Reservoir
11/01/2012US20120273216 Methods of establishing and/or maintaining flow of hydrocarbons during subsea operations
11/01/2012US20120273215 Offshore fluid transfer systems and methods
11/01/2012US20120273214 Connection System for Subsea Flow Interface Equipment
11/01/2012US20120273213 Marine subsea riser systems and methods
11/01/2012US20120273208 Chemical Diversion Technique
11/01/2012US20120273207 Chitosan as biocide in oilfield fluids
11/01/2012US20120273206 Dry polymer mixing process for forming gelled fluids
11/01/2012US20120273205 Method, system and apparatus for subsurface flow manipulation
11/01/2012US20120273204 Zero emission liquid fuel production by oxygen injection
11/01/2012US20120273203 Downhole mixing device for mixing a first fluid with a second fluid
11/01/2012US20120273202 Controlled Production and Injection
11/01/2012US20120273201 Shock Load Mitigation in a Downhole Perforation Tool Assembly
11/01/2012US20120273197 Composites for controlled release of well treatment agents
11/01/2012US20120273196 Segmented current controlling method of current controlling filter pipe column for oil-gas well and structure of oil-gas well
11/01/2012US20120273195 Method for steam assisted gravity drainage with pressure differential injection
11/01/2012US20120273190 Electrokinetic enhanced hydrocarbon recovery from oil shale
11/01/2012US20120273189 Prevention of biomass aggregation at injection wells
11/01/2012CA2834473A1 Downhole casing system
11/01/2012CA2834293A1 Casing relief valve
11/01/2012CA2834026A1 Expandable open-hole anchor
11/01/2012CA2833981A1 Functionally gradient composite article
11/01/2012CA2833882A1 Expansion system for an expandable tubular assembly
11/01/2012CA2832757A1 Subsea accumulator system
11/01/2012CA2832326A1 Hybrid transponder system for long-range sensing and 3d localization
11/01/2012CA2832323A1 Methods of employing and using a hybrid transponder system for long-range sensing and 3d localization
11/01/2012CA2831800A1 Composites for controlled release of well treatment agents
11/01/2012CA2831521A1 Reverse rotation protection for borehole pumps
11/01/2012CA2831490A1 Treatment fluids containing biodegradable chelating agents and methods for use thereof
11/01/2012CA2830417A1 Metering process and device for performing the process
11/01/2012CA2828750A1 In situ radio frequency catalytic upgrading
10/2012
10/31/2012EP2518264A1 Methods and apparatus for drilling, completing and configuring u-tube boreholes
10/31/2012EP2518258A1 Downhole casing system
10/31/2012EP2516856A2 Methods of use for a positive displacement pump having an externally assisted valve
10/31/2012EP2516798A2 Constant pressure open hole water packing system
10/31/2012EP2516797A2 System and method for waterflooding offshore reservoirs
10/31/2012EP2516793A1 Downhole tool for borehole cleaning or for moving fluid in a borehole
10/31/2012CN202510101U Side injection device of intelligent oil field variable frequency water feed pump
10/31/2012CN202510096U Liquid adding device for power supply free well
10/31/2012CN202510095U Adjustable sand preventing gas nozzle
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