| 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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| 09/25/2013 | CN103321625A Rotation-free locking ring type sliding sleeve with ball seat capable of being taken out |
| 09/25/2013 | CN103321624A Threaded sliding sleeve with ball seat capable of being taken out |
| 09/25/2013 | CN103321623A Simulating chamber for heating oil shale underground in situ |
| 09/25/2013 | CN103321622A Sand draining and oil extracting method in manner of integrating injection and extraction for thermal producing well and device thereof |
| 09/25/2013 | CN103321621A Heavy oil displacement method using wedged vicious slug |
| 09/25/2013 | CN103321620A Device for injecting gel while drilling |
| 09/25/2013 | CN103321619A Polymer injection and water injection layered continuously-adjustable injection distribution device |
| 09/25/2013 | CN103321618A Oil shale in-situ mining method |
| 09/25/2013 | CN103321617A Nano-magnetic fluid huff-and-puff oil extraction method and well network structure for extra-heavy oil and super-heavy oil reservoirs |
| 09/25/2013 | CN103321616A Method and system for collecting seabed methane hydrate |
| 09/25/2013 | CN103321615A Method for preparing water-soluble sylvite from deep polyhalite in in-situ reaction mode |
| 09/25/2013 | CN103321614A Swing-type double-mule-head automatic-balancing commutator driving pumping unit |
| 09/25/2013 | CN103321613A Method and device for exploiting coal bed methane by discharging water and pulverized coal |
| 09/25/2013 | CN103321612A Water salvaging type drainage and gas production machine |
| 09/25/2013 | CN103321611A Drum type pulse-free petroleum pumping unit |
| 09/25/2013 | CN103321608A Rotation-free pawl-type sliding sleeve with ball seat capable of being taken out |
| 09/25/2013 | CN102587865B Foam drainage gas recovery method for natural gas horizontal well |
| 09/25/2013 | CN102418549B Technical method for extracting coal bed methane from constructed coal development area |
| 09/25/2013 | CN102242640B Rapid outburst elimination method for cross cut coal uncovering in coal mine underground |
| 09/25/2013 | CN102182437B Method for determining and eliminating hydraulic fracture stress boundary of coal mine underground drilling |
| 09/25/2013 | CN102134988B Method for measuring dryness of downhole steam in thermal recovery horizontal well |
| 09/25/2013 | CN102057131B Collection and lift modules for use in a wellbore |
| 09/25/2013 | CN101963053B Power assembly of positioning and reversing pumping unit |
| 09/25/2013 | CN101910553B Sand control screen assembly and method for use of same |
| 09/25/2013 | CN101881145B Tower frame type combined transmission numerically controlled pumping unit |
| 09/25/2013 | CN101842548B Method of radially expanding a tubular element |
| 09/25/2013 | CN101523013B Peripheral sealing system for pre-tensioned screens |
| 09/24/2013 | US8541347 Hydrocarbon-acid emulsion compositions and associated methods |
| 09/24/2013 | US8541051 On-the fly coating of acid-releasing degradable material onto a particulate |
| 09/24/2013 | US8540026 Wellbore laser operations |
| 09/24/2013 | US8540024 Perforation strategy for heterogeneous proppant placement in hydraulic fracturing |
| 09/24/2013 | US8540023 Produced water disposal |
| 09/24/2013 | US8540022 Method of delivering frac fluid and additives |
| 09/24/2013 | US8540019 Fracturing system and method |
| 09/24/2013 | US8540018 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well |
| 09/24/2013 | US8540015 Apparatus and method for treating a subterranean formation using diversion |
| 09/24/2013 | CA2800746C Pressure assisted oil recovery |
| 09/24/2013 | CA2734170C Method of injecting solvent into an underground reservoir to aid recovery of hydrocarbons |
| 09/24/2013 | CA2730130C Adapter for shaped charge casing |
| 09/24/2013 | CA2712270C Degradable non-aqueous gel systems |
| 09/24/2013 | CA2700580C Gravel packing methods |
| 09/24/2013 | CA2694970C Delayed breaker |
| 09/24/2013 | CA2683215C Method to provide variability in fluid flow rates in a well |
| 09/24/2013 | CA2568593C Method and apparatus for performing chemical treatments of exposed geological formations |
| 09/24/2013 | CA2401705C Wireless downhole measurement and control for optimizing gas lift well and field performance |
| 09/22/2013 | CA2810139A1 Multizone and zone-by-zone abrasive jetting tools and methods for fracturing subterranean formations |
| 09/21/2013 | CA2810045A1 Multizone frac system |
| 09/20/2013 | CA2820742A1 Improved hydrocarbon recovery process exploiting multiple induced fractures |
| 09/20/2013 | CA2772462A1 Method, system, and device for displaying operating parameters of reciprocating oil well pumping apparatus |
| 09/19/2013 | WO2013138584A1 Screening potential geomechanical risks during waterflooding |
| 09/19/2013 | WO2013137845A1 Method and apparatus for acoustic noise isolation in a subterranean well |
| 09/19/2013 | WO2013137781A2 Downhole filter |
| 09/19/2013 | WO2013136310A1 Hydrocarbon gas treatment |
| 09/19/2013 | WO2013135600A2 Subsea flow splitting arrangement |
| 09/19/2013 | WO2013135288A1 System and method for controlling the processing of oil sands |
| 09/19/2013 | WO2013134883A1 Method of reducing leaks from a pipeline |
| 09/19/2013 | WO2013134864A1 Fully controlled combustion assisted gravity drainage process |
| 09/19/2013 | WO2013066358A3 Statistical reservoir model based on detected flow events |
| 09/19/2013 | WO2012177713A3 Subsea connector with an actuated latch cap assembly |
| 09/19/2013 | WO2012148902A4 Hybrid transponder system for long-range sensing and 3d localization |
| 09/19/2013 | WO2012148890A4 Methods of employing and using a hybrid transponder system for long-range sensing and 3d localization |
| 09/19/2013 | US20130240215 Downhole multiple well |
| 09/19/2013 | US20130240211 Method for Inducing Fracture Complexity in Hydraulically Fratured Horizontal Well Completions |
| 09/19/2013 | US20130240210 Systems and Methods For Injecting A Particulate Mixture |
| 09/19/2013 | US20130240209 Cold Distillation Process and Apparatus |
| 09/19/2013 | US20130240206 Extraction of hydrocarbons from hydrocarbon-containing materials and/or processing of hydrocarbon-containing materials |
| 09/19/2013 | US20130240204 Biogenic fuel gas generation in geologic hydrocarbon deposits |
| 09/19/2013 | US20130240199 Seal section with parallel bag sections |
| 09/18/2013 | EP2638239A1 Method and apparatus for wellbore perforation |
| 09/18/2013 | EP2638231A1 Controlled hydrostatic pressure completion system |
| 09/18/2013 | CN203201769U Cylinder-free plunger pump used under oil well |
| 09/18/2013 | CN203201542U Cluster type fracturing sliding sleeve |
| 09/18/2013 | CN203201541U Fracturing sliding sleeve |
| 09/18/2013 | CN203201540U Abrasion-resistant and pasting-resistant small-external-diameter inner wire winding screen pipe externally sleeved with protective ribs and used for sand prevention of oil well |
| 09/18/2013 | CN203201539U Oil well down hole sand prevention device |
| 09/18/2013 | CN203201538U Novel pumping unit |
| 09/18/2013 | CN203201537U Minor-diameter electric-control intelligent pipe column for casing damage oil extracting well |
| 09/18/2013 | CN203201536U Device for automatically recovering oil gas in oil-producing wellhead casing |
| 09/18/2013 | CN203201535U High-efficiency gas-proof and sand-proof integrated tubular column |
| 09/18/2013 | CN203201532U Hydraulic switch for oil and gas well circulation sliding sleeve |
| 09/18/2013 | CN203201528U Gas well opening casing pressure burglar alarm |
| 09/18/2013 | CN203201520U High-pressure efficient fracture well head device |
| 09/18/2013 | CN203201506U Efficient rotational flow sand setting device |
| 09/18/2013 | CN203196537U Swelling device provided with double wheels and intermediate net guide rod and used for accelerating polymer dissolution |
| 09/18/2013 | CN103314180A A method and apparatus for removing liquid from a gas producing well |
| 09/18/2013 | CN103314179A System and method for enhancing oil recovery from a subterranean reservoir |
| 09/18/2013 | CN103314178A Process for the preparation of conformable materials for downhole screens |
| 09/18/2013 | CN103311870A Geothermal well pipe with cable protection function |
| 09/18/2013 | CN103306954A Underground hydrodynamic oil pumping system |
| 09/18/2013 | CN103306715A Gas extraction drilling orifice device and operating method thereof |
| 09/18/2013 | CN103306712A Coal bed gas standing wave exploitation method |
| 09/18/2013 | CN103306665A Testing device for geological storage of carbon dioxide in coal seams |
| 09/18/2013 | CN103306661A Method for controlling fracturing of multiple fractures of oil and gas field with natural micro-fracture-developed reservoir stratum |
| 09/18/2013 | CN103306660A Shale gas reservoir hydraulic fracturing production increasing method |
| 09/18/2013 | CN103306659A Fracturing technology for implementing ultrahigh flow conductivity |
| 09/18/2013 | CN103306658A Stage-by-stage setting multi-stage segmental fracturing string and use method thereof |
| 09/18/2013 | CN103306657A Coal-seam slotting pressure-relief anti-reflection and slit groove retaining device and method |
| 09/18/2013 | CN103306656A Oil gas well single wing fracture fracturing technology |
| 09/18/2013 | CN103306655A Staged fracturing method adopting under-pressure dragging |
| 09/18/2013 | CN103306654A Underground on-site electromagnetic compound heating method of oil shale |