| 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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| 04/10/2013 | CN202866773U Ultrahigh-pressure nitrogen injecting device special for oil field |
| 04/10/2013 | CN202866772U Sand blasting slotting perforation tool |
| 04/10/2013 | CN202866771U Novel combined oil sieve pipe |
| 04/10/2013 | CN202866770U Variable diameter sealing barrel oil pump with spring as supporting body |
| 04/10/2013 | CN202866769U Long service life oil bailing tool |
| 04/10/2013 | CN202866768U Glass fiber reinforced plastic casing string |
| 04/10/2013 | CN202866767U Coal bed gas production monitoring device of coal bed gas horizontal well mouth |
| 04/10/2013 | CN202866766U Novel beam-pumping unit |
| 04/10/2013 | CN202866765U Novel tower-type pumping unit |
| 04/10/2013 | CN202866764U Combination pump deep pumping device |
| 04/10/2013 | CN202866763U Power unit of hydraulic oil pumping machine and hydraulic oil pumping machine comprising power unit |
| 04/10/2013 | CN202866762U Hydraulic oil pumping machine |
| 04/10/2013 | CN202866761U Strong-releasing type leakage-preventing well washing oil production device |
| 04/10/2013 | CN202866760U Automatic-speed-change wide-tilt-angle oil sucking machine |
| 04/10/2013 | CN202866759U Electric work way-making and unload hanging shaft linkage permanent magnet driving vertical pumping unit |
| 04/10/2013 | CN202866750U Big mouth diameter oil-gas extraction wellhead device |
| 04/10/2013 | CN202866683U Vacuum double-layer hollow oil pumping rod |
| 04/10/2013 | CN202866671U Bottom connector of direct transfer pumping unit and pumping device using same |
| 04/10/2013 | CN202860425U Auxiliary device for polymer solution preparation |
| 04/10/2013 | CN103032060A Continuous oil pipe hydraulic sanding blasting multi-cluster perforation annular sanding staged fracturing process for horizontal well |
| 04/10/2013 | CN103032059A Directional hydraulic fracturing connected mining method |
| 04/10/2013 | CN103032058A Horizontal multi-stage fracturing sliding sleeve of an oil field and opening tool |
| 04/10/2013 | CN103032057A Steam-driven three-dimensional physical simulation system for thick oil horizontal well |
| 04/10/2013 | CN103032056A Method and device for reducing viscosity of shaft applicable to extremely-viscous oil recovery |
| 04/10/2013 | CN103032055A Displacement method utilizing compound containing sulfonate negative non-surface active agent |
| 04/10/2013 | CN103032054A Pressurization oil extraction method and device thereof through guiding high-pressure gas-liquid jet close to deepwater oil field mud line well opening |
| 04/10/2013 | CN103032053A Short stroke eccentric gear type pumping unit |
| 04/10/2013 | CN103032052A Flywheel energy-storing oil pumping unit |
| 04/10/2013 | CN103032046A Novel self-installing four-cylindrical-foundation two-upright wellhead platform |
| 04/10/2013 | CN103032039A Pre-filling sand prevention method of highly-deviated well casing pipe and dedicated sand-filter pipe thereof |
| 04/10/2013 | CN103031121A Fracturing propping agent, preparation method thereof and deep wall fracturing method |
| 04/10/2013 | CN103030916A Gel composition and nitrogen-foamed gel composite temporary plugging agent containing same |
| 04/10/2013 | CN103030193A Membrane device for treating oilfield produced water for reinjection and treating method |
| 04/10/2013 | CN102704902B Natural gas hydrate exploiting method |
| 04/10/2013 | CN102199418B Inorganic solidifying system for controlling bottom water coning in fracture-cavity karst reservoir, and injection method thereof |
| 04/10/2013 | CN102182433B Retrievable underground foaming agent mixing device |
| 04/10/2013 | CN102155208B Method for improving effective paving of propping agents in large and thick reservoir |
| 04/10/2013 | CN101881154B Mechanical oil recovery testing platform |
| 04/10/2013 | CN101839125B Pressurized water injection device |
| 04/10/2013 | CN101818620B Mining method for maximum reservoir contact well |
| 04/10/2013 | CN101684728B Gas injection steam umbrella of horizontal well |
| 04/10/2013 | CN101529197B Methods and apparatuses for electronic time delay and systems including same |
| 04/10/2013 | CN101338662B Method for preventing and reducing hydrogen sulfide of aqueous system and promoting oil recovery factor |
| 04/10/2013 | CN101218414B Method and installation for connecting a rigid submarine pipeline and a flexible submarine pipeline |
| 04/10/2013 | CN101100938B Method and system for removing fluid from a subterranean zone using an enlarged cavity |
| 04/09/2013 | US8415279 Microemulsions used as spacer fluids |
| 04/09/2013 | US8415278 Compositions and methods for breaking a viscosity increasing polymer at very low temperature used in downhole well applications |
| 04/09/2013 | US8414781 In-line flow separation of fluids in a pipe separator |
| 04/09/2013 | US8413726 Apparatus, assembly and process for injecting fluid into a subterranean well |
| 04/09/2013 | US8413724 Gas handler, riser assembly, and method |
| 04/09/2013 | US8413720 Organic acid compositions and methods of use in subterranean operations |
| 04/09/2013 | US8413719 Relative permeability modification |
| 04/09/2013 | US8413718 Oil recovery by sequential waterflooding with oil reinjection and oil relocation |
| 04/09/2013 | CA2748514C Method and system for producing hydrocarbons from a hydrate reservoir using a sweep gas |
| 04/09/2013 | CA2640125C Method of treating a subterranean formation using a rheology model for fluid optimization |
| 04/09/2013 | CA2607706C System and method utilizing a compliant well screen |
| 04/09/2013 | CA2566773C Geosynthetic composite for borehole strengthening |
| 04/09/2013 | CA2563729C Uncollapsed expandable wellbore junction |
| 04/07/2013 | CA2791725A1 Treating hydrocarbon formations using hybrid in situ heat treatment and steam methods |
| 04/07/2013 | CA2755406A1 Specific gravity valve for a production tank |
| 04/06/2013 | CA2791468A1 Enhanced oilfield swellable elastomers and methods for making and using same |
| 04/04/2013 | WO2013048810A1 Multizone treatment system |
| 04/04/2013 | WO2013048724A1 Method of supplying engineered waters for drilling and hydraulic fracturing operations for wells and recapturing minerals and other components from oil and gas production waste waters |
| 04/04/2013 | WO2013048666A1 Enhancing swelling rate for subterranean packers and screens |
| 04/04/2013 | WO2013048643A1 Method and system for hydraulic fracturing |
| 04/04/2013 | WO2013048371A1 Forming inclusions in selected azimuthal orientations from a casing section |
| 04/04/2013 | WO2013048370A1 Wellbore flow control devices comprising coupled flow regulating assemblies and methods for use thereof |
| 04/04/2013 | WO2013045553A2 A downhole injection tool |
| 04/04/2013 | WO2013045550A1 A punching tool |
| 04/04/2013 | WO2013044300A1 A method and system of development of a multilateral well |
| 04/04/2013 | WO2013022638A3 Permeable material compacting apparatus and method |
| 04/04/2013 | WO2012173956A3 Perforating gun assembly to control wellbore fluid dynamics |
| 04/04/2013 | WO2012173954A3 Additives for improving hydrocarbon recovery |
| 04/04/2013 | WO2012143392A3 Pump system, method and uses for transporting injection water to an underwater injection well |
| 04/04/2013 | WO2012128644A3 Apparatus and method for positioning of a fluidized plugging material in an oil well or gas well |
| 04/04/2013 | WO2012051149A3 Marine subsea free-standing riser systems and methods |
| 04/04/2013 | WO2012025879A3 Offshore structure |
| 04/04/2013 | WO2011163419A3 Flow regulating applied magnetic envelope |
| 04/04/2013 | US20130083627 Remote communication with subsea running tools via blowout preventer |
| 04/04/2013 | US20130082506 Method and Apparatus for Increasing the Yield in a Deposit |
| 04/04/2013 | US20130081825 Apparatus and Methods Utilizing Nonexplosive Energetic Materials for Downhole Applications |
| 04/04/2013 | US20130081822 Polymer-Enhanced Surfactant Flooding For Permeable Carbonates |
| 04/04/2013 | US20130081820 Hostile environment stable compositions and drilling and fracturing fluids containing same |
| 04/04/2013 | US20130081819 Breaking pumpable hydrocarbon gels |
| 04/04/2013 | US20130081817 Responsively Activated Wellbore Stimulation Assemblies and Methods of Using the Same |
| 04/04/2013 | US20130081816 Thermothickener Polymer and Surfactant Composition and Methods of Employing the Composition |
| 04/04/2013 | US20130081815 Enhancing Swelling Rate for Subterranean Packers and Screens |
| 04/04/2013 | US20130081813 Methods of Fluid Loss Control, Diversion, and Sealing Using Deformable Particulates |
| 04/04/2013 | US20130081812 Proppant materials and methods of tailoring proppant material surface wettability |
| 04/04/2013 | US20130081811 In situ fluid reservoir stimulation process |
| 04/04/2013 | US20130081810 Methods of preventing premature fracturing of a subterranean formation using a sheath |
| 04/04/2013 | US20130081809 Process for producing mineral oil from an underground deposit |
| 04/04/2013 | US20130081808 Hydrocarbon recovery from bituminous sands with injection of surfactant vapour |
| 04/04/2013 | US20130081803 Centralizing Mechanism Employable with a Downhole Tool |
| 04/04/2013 | US20130081801 Methods for Improving Coatings on Downhole Tools |
| 04/04/2013 | US20130081800 Screen assembly and methods of use |
| 04/04/2013 | CA2850352A1 Electrochemical desalination for oil recovery |
| 04/04/2013 | CA2850193A1 Drilling fluid processing |
| 04/04/2013 | CA2850134A1 Multizone treatment system |
| 04/04/2013 | CA2849953A1 Method of supplying engineered waters for drilling and hydraulic fracturing operations for wells and recapturing minerals and other components from oil and gas production waste waters |