| 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) |
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| 03/27/2013 | CN202832416U Foldable pumping unit operating platform |
| 03/27/2013 | CN202832415U Separate oil production pump for pumping well |
| 03/27/2013 | CN202832414U Split type plunger piston device for continuous production without well shut-in |
| 03/27/2013 | CN202832413U Middle-shallow layer gas well flowing technique pipe |
| 03/27/2013 | CN202832412U Pumping unit auxiliary balance device |
| 03/27/2013 | CN202832411U Electric submersible pump gas lift composite string using no gas lift valve |
| 03/27/2013 | CN202832410U Spiral flow water draining and gas production device used for natural gas extraction |
| 03/27/2013 | CN202832409U Ultra-low pumping speed beam-pumping unit |
| 03/27/2013 | CN202832408U Submersible screw pump gas lift composite pip column for drainage gas recovery |
| 03/27/2013 | CN202832407U Intelligent timing grease injection lubrication beam pumping unit |
| 03/27/2013 | CN202832406U Oil well eddy heating device |
| 03/27/2013 | CN202832405U Gas well underground multilevel ultrasonic atomization drainage gas collection device |
| 03/27/2013 | CN202832404U Simply constructed ultrasonic atomization drainage gas recovery device under gas well |
| 03/27/2013 | CN202832403U Adjustable rack pumping unit roller mechanism |
| 03/27/2013 | CN202832402U Carbon dioxide sand mulling device specially used for oil field carbon dioxide sand mulling oil extraction |
| 03/27/2013 | CN202832401U Universal coupling specially used for intelligent intermittent bailing type pumping unit |
| 03/27/2013 | CN202832400U Device capable of continuous pumping with break-off rod-pumped well polish rod |
| 03/27/2013 | CN202832399U Lubrication-free chain type oil pumping unit for oil extraction in oil field |
| 03/27/2013 | CN202832384U Water injection well uniflow sand prevention blanking plug |
| 03/27/2013 | CN202832383U Pneumatic-control water-injection-well safety valve |
| 03/27/2013 | CN202832382U Safety valve of ground hydraulic control water injection well |
| 03/27/2013 | CN202832375U Breakable ball injection fracturing slide sleeve |
| 03/27/2013 | CN202832342U Sedimentation type oil-gas well mouth ball catcher |
| 03/27/2013 | CN202832242U Installation pipe end cutting device for sleeve pipe |
| 03/27/2013 | CN202823189U Polymer flooding oil field on line profile control anti-shear solution mixing device |
| 03/27/2013 | CN103003613A Apparatus and method for heating of hydrocarbon deposits by axial rf coupler |
| 03/27/2013 | CN103003524A Surface detection of failed open-hole packers using tubing with external tracer coatings |
| 03/27/2013 | CN103003522A Method of improving the production of a mature gas or oil field |
| 03/27/2013 | CN103003521A Methods for providing proppant slugs in fracturing treatments |
| 03/27/2013 | CN103003520A Method and system for treating a subterranean formation |
| 03/27/2013 | CN103003516A Method for drilling through nuisance hydrocarbon bearing formations |
| 03/27/2013 | CN102996747A Chain driving reversing device and method of beam-pumping unit |
| 03/27/2013 | CN102996160A Safety protection device and method for slotting to increase permeability by water jet |
| 03/27/2013 | CN102996115A Direct-reading examining seal instrument suitable for eccentric water distributor |
| 03/27/2013 | CN102996108A Coal seam drilling coal-gas-water separating, conveying and containing device |
| 03/27/2013 | CN102996107A Fracturing process for online continuous preparation based on liquid polymer |
| 03/27/2013 | CN102996106A Online continuous production and injection integrating method and device for jelly dispersoid |
| 03/27/2013 | CN102996105A Setting the value of an operational parameter of a well |
| 03/27/2013 | CN102996104A Horizontal well fixed-face perforating method and device |
| 03/27/2013 | CN102996103A Co-well extracting-pouring device adopting downhole oil-water separation for large-dimension sleeve of offshore oil well |
| 03/27/2013 | CN102996102A Pumping unit with gear making reciprocating movement on rack |
| 03/27/2013 | CN102996101A Pumping unit of dual-connection-rod hook structure |
| 03/27/2013 | CN102996100A Drilling pump pull rod sealing piece fixing method and fixing device thereof |
| 03/27/2013 | CN102353052B High pressure combustion air distribution structure for compound heat carrier generator |
| 03/27/2013 | CN102353040B Ultra-high pressure combustion device |
| 03/27/2013 | CN102353033B High-temperature high-pressure combustion system for supercritical compound heat carrier generator |
| 03/27/2013 | CN102277143B W/O/W type active viscous oil blocking agent used in oil well, and preparation method thereof |
| 03/27/2013 | CN102261261B Drilling and reflection reducing integrated device for tectonic coal development area |
| 03/27/2013 | CN102108852B Multi-fractures modification method for dense sandstone reservoir |
| 03/27/2013 | CN102061906B Air foam slug flow driving process for oil recovery of oil field |
| 03/27/2013 | CN101949281B Underground throttler |
| 03/27/2013 | CN101896683B System for drilling a wellbore |
| 03/27/2013 | CN101871339B Method for underground in-situ extraction of hydrocarbon compound in oil shale |
| 03/27/2013 | CN101855407B Water-storing and water-cleaning system |
| 03/27/2013 | CN101839126B Method for increasing production by compounding microorganism and biologically active agent |
| 03/27/2013 | CN101839124B Method for controlling extension of reservoir fracturing fracture of oil-gas field |
| 03/27/2013 | CN101828000B Water control device using electromagnetics |
| 03/27/2013 | CN101778994B Method of lining a well or a pipe using an inflatable bladder |
| 03/27/2013 | CN101555787B Improved steam drive oil production method |
| 03/27/2013 | CN101255787B Method for controlling the flow of fluid between a downhole formation and a base pipe |
| 03/26/2013 | US8403069 Oil recovery employing alkylene carbonates |
| 03/26/2013 | US8403068 Indexing sleeve for single-trip, multi-stage fracing |
| 03/26/2013 | US8403061 Method of making a flow control device that reduces flow of the fluid when a selected property of the fluid is in selected range |
| 03/26/2013 | US8403051 Stabilizing emulsified acids for carbonate acidizing |
| 03/26/2013 | US8403050 Method for treating a hydrocarbon-bearing formation with a fluid followed by a nonionic fluorinated polymeric surfactant |
| 03/26/2013 | US8403049 Methods and devices for one trip plugging and perforating of oil and gas wells |
| 03/26/2013 | US8403044 Sulfonated internal olefin surfactant for enhanced oil recovery |
| 03/26/2013 | US8403043 Microwave-promoted desulfurization of crude oil |
| 03/26/2013 | US8403041 Method for pre-treatment of subterranean sites adjacent to water injection wells |
| 03/26/2013 | US8403040 Method for pre-treatment of subterranean sites adjacent to water injection wells |
| 03/26/2013 | US8403038 Flow control device that substantially decreases flow of a fluid when a property of the fluid is in a selected range |
| 03/26/2013 | US8403033 Manual emergency water pump system |
| 03/26/2013 | CA2722279C Apparatus and method for characterizing two phase fluid flow |
| 03/26/2013 | CA2718565C Plunger for performing artificial lift of well fluids |
| 03/26/2013 | CA2709221C Casing deformation and control for inclusion propagation |
| 03/26/2013 | CA2700731C Fluid control apparatus and methods for production and injection wells |
| 03/26/2013 | CA2691769C Method and apparatus for multilateral multistage stimulation of a well |
| 03/26/2013 | CA2603891C Biogenic fuel gas generation in geologic hydrocarbon deposits |
| 03/26/2013 | CA2595467C Use of aqueous dispersions for tertiary petroleum production |
| 03/26/2013 | CA2514087C Procedure for capturing mercaptans in a gas load |
| 03/23/2013 | CA2790760A1 Pyromellitamide gelling agents |
| 03/22/2013 | CA2759328A1 Frac head with sacrificial wash ring |
| 03/21/2013 | WO2013040597A1 Method and system for providing temporary formation sealant |
| 03/21/2013 | WO2013040427A2 Methods of using oleaginous fluids for completion operations |
| 03/21/2013 | WO2013040296A2 Apparatus and methods for providing fluid into a subsea pipeline |
| 03/21/2013 | WO2013040003A2 Active waveshaper for deep penetrating oil-field charges |
| 03/21/2013 | WO2013039980A1 Method for selection of surfactants in well stimulation |
| 03/21/2013 | WO2013039782A2 System, apparatus and method for generating power in a fluid conduit |
| 03/21/2013 | WO2013039689A2 Method for determining fracture spacing and well fracturing using the method |
| 03/21/2013 | WO2013039670A1 Completing a multi-stage well |
| 03/21/2013 | WO2013039663A2 Magnetically coupled safety valve with satellite inner magnets |
| 03/21/2013 | WO2013037055A1 Wellbore frac tool with inflow control |
| 03/21/2013 | WO2013037002A1 Redeployable subsea manifold-riser system |
| 03/21/2013 | WO2013016117A3 A device for perforating a material comprising a tail-locking charge case |
| 03/21/2013 | WO2013009617A3 Methods of limiting or reducing the amount of oil in a sea using a fluid director |
| 03/21/2013 | WO2012178203A3 Expandable filtering system for single packer systems |
| 03/21/2013 | WO2012170553A3 Method to look ahead of the bit |
| 03/21/2013 | WO2012162528A3 Pump system |
| 03/21/2013 | WO2012156735A3 Perforating drill string assembly |
| 03/21/2013 | WO2012120542A3 Screen panel with improved screening area |