| 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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| 09/09/2009 | CN201306154Y Energy-efficient tower oil pumping unit |
| 09/09/2009 | CN101529051A Conformance control through stimulus-responsive materials |
| 09/09/2009 | CN101529050A Method and apparatus for recovering and transporting methane gas |
| 09/09/2009 | CN101526079A Multifunctional oil-extraction and gas-injection integrated oil well pump for sanding heavy crude oil well |
| 09/09/2009 | CN101525995A Gas and liquid multiphase quantitative measuring device and method thereof |
| 09/09/2009 | CN101525992A Closed cuttings storage device for sulfur-bearing formation underbalanced drilling |
| 09/09/2009 | CN101525991A Hydraulic-driven mixer for injection |
| 09/09/2009 | CN101525990A Process for assisting thick oil exploitation and device thereof |
| 09/09/2009 | CN101525989A Oil-well waste gas recovery device |
| 09/09/2009 | CN101525988A Weight box device of oil extractor |
| 09/09/2009 | CN101525987A Oil extractor with external rotor electric machine |
| 09/09/2009 | CN100538004C Design method for improving waterflooding effect of anisotropic oil reservoir |
| 09/09/2009 | CN100538003C Swelling type screen pipe suspension method |
| 09/08/2009 | US7585818 providing a drillilng or fracturing fluid containing an aquous base fluid and a enzymetically biosynthesized galactomannan from genetically engineered plant, placing the treatment fluid into a subterranean formation |
| 09/08/2009 | US7585817 nonionic fluorinated polymeric surfactant comprises a divalent unit containing fluorinated alkylsulfonamidealkylene ester of methacrylic or acrylic acid and a polyalkylene oxide segment; a solvent containing polyol or polyether and at least one solvent selected from ketone, ether, a monohydroxy alcohol |
| 09/08/2009 | US7585816 Method for inhibiting hydrate formation |
| 09/08/2009 | US7585002 Expandable tubular connection |
| 09/08/2009 | US7584800 System and method for indexing a tool in a well |
| 09/08/2009 | US7584799 Gravel pack multi-pathway tube with control line retention and method for retaining control line |
| 09/08/2009 | US7584794 Mechanical and fluid jet horizontal drilling method and apparatus |
| 09/08/2009 | US7584793 addition of surface treated or complexed or sintered or hardened delayed breaker such as MgO to a gelled hydrocacrong oil conining phosphate ester gelling agent, a surfactant; injecting said fluid down a well, breaker wil crosslinking with phosphorous break the fluid, rendering phosphorus non- volatile |
| 09/08/2009 | US7584791 Methods for reducing the viscosity of treatment fluids comprising diutan |
| 09/08/2009 | US7584790 Method of isolating and completing multi-zone frac packs |
| 09/08/2009 | US7584789 Methods of cracking a crude product to produce additional crude products |
| 09/08/2009 | US7584785 Groundwater sampling device |
| 09/08/2009 | US7584784 Reciprocating pump drive apparatus |
| 09/08/2009 | US7584783 Surface activated downhole spark-gap tool |
| 09/08/2009 | CA2547424C Submersible pumping system |
| 09/08/2009 | CA2546931C Expanded downhole screen systems and method |
| 09/08/2009 | CA2525201C Plunger lift apparatus that includes one or more sensors |
| 09/08/2009 | CA2523090C Methods, aqueous well treating fluids and friction reducers therefor |
| 09/08/2009 | CA2461278C Corrugated downhole tubulars |
| 09/08/2009 | CA2451231C Method and apparatus for detonating an explosive charge |
| 09/08/2009 | CA2423394C Proppant flowback control using elastomeric component |
| 09/08/2009 | CA2346341C Encapsulated chemicals for use in controlled time release applications and methods |
| 09/08/2009 | CA2340450C Shale-stabilizing additives |
| 09/06/2009 | CA2657697A1 Liquid hydrocarbon slug containing vapor recovery system |
| 09/03/2009 | WO2009108940A2 Underground sequestration system and method |
| 09/03/2009 | WO2009108650A1 Systems and methods for producing oil and/or gas |
| 09/03/2009 | WO2009108423A1 Method for enhancing heavy hydrocarbon recovery |
| 09/03/2009 | WO2009108413A1 Systems and methods for regulating flow in a wellbore |
| 09/03/2009 | WO2009108128A1 A well screen |
| 09/03/2009 | WO2009108063A1 Separation and capture of liquids of a multiphase flow |
| 09/03/2009 | WO2009108059A2 Tubular member having self-adjusting valves controlling the flow of fluid into or out of the tubular member |
| 09/03/2009 | WO2009090460A3 Method for calculating the ratio of relative permeabilities of formation fluids and wettability of a formation downhole, and a formation testing tool to implement the same |
| 09/03/2009 | WO2009079363A3 Submersible pump with surfactant injection |
| 09/03/2009 | WO2009079234A3 Methods of treating subterranean wells using changeable additives |
| 09/03/2009 | WO2009079231A3 Methods of contacting and/or treating a subterranean formation |
| 09/03/2009 | WO2009060408A3 Methods for manipulation of the flow of fluids in subterranean formations |
| 09/03/2009 | WO2009050681A3 Multilayered ball sealer and method of use thereof |
| 09/03/2009 | WO2009045816A9 Method and system for interpreting swabbing tests using nonlinear regression |
| 09/03/2009 | US20090221451 Composition and Method for Producing a Pumpable Hydrocarbon Hydrate Slurry at High Water-Cut |
| 09/03/2009 | US20090218103 Method for Flow Control and Autonomous Valve or Flow Control Device |
| 09/03/2009 | US20090218101 Apparatus and method for inflow control |
| 09/03/2009 | US20090218099 Method for Enhancing Heavy Hydrocarbon Recovery |
| 09/03/2009 | US20090218098 Methods Of Using A Particle Impact Drilling System For Removing Near-Borehole Damage, Milling Objects In A Wellbore, Under Reaming, Coring, Perforating, Assisting Annular Flow, And Associated Methods |
| 09/03/2009 | US20090218097 Wellbore intervention tool |
| 09/03/2009 | US20090218096 Control System for an Annulus Balanced Subsurface Safety Valve |
| 09/03/2009 | US20090218095 Pressure Equalising Devices |
| 09/03/2009 | US20090218094 Live Bottom Hole Pressure for Perforation/Fracturing Operations |
| 09/03/2009 | US20090218093 Use of a Steel Composition for the Production of an Armouring Layer of a Flexible Pipe and the Flexible Pipe |
| 09/03/2009 | US20090218091 Downhole gas flow powered deliquefaction pump |
| 09/03/2009 | US20090218089 Phase-Controlled Well Flow Control and Associated Methods |
| 09/03/2009 | CA2813503A1 Phase-controlled well flow control and associated methods |
| 09/03/2009 | CA2716722A1 Separation and capture of liquids of a multiphase flow |
| 09/03/2009 | CA2716156A1 Treatment fluid with oxidizer breaker system and method |
| 09/03/2009 | CA2713261A1 Method for enhancing heavy hydrocarbon recovery |
| 09/03/2009 | CA2712928A1 Systems and methods for producing oil and/or gas |
| 09/02/2009 | EP2096257A1 Method for increasing the oil recovery of a productive formation |
| 09/02/2009 | EP2094940A2 Wellbore method and apparatus for completion, production and injection |
| 09/02/2009 | EP2094371A1 Process for obtaining carbon dioxide |
| 09/02/2009 | EP1155219B1 Fracturing process and composition |
| 09/02/2009 | CN201301700Y Sand setting device of oil field oil collecting pipeline |
| 09/02/2009 | CN201301699Y Crude oil gas-liquid closed separating device |
| 09/02/2009 | CN201301698Y Wellhead filter for waterflooding in oil field |
| 09/02/2009 | CN201301697Y Coal bed gas nonmetal pipe line multi-well series connecting device |
| 09/02/2009 | CN201301696Y Skid-mounted pressure boost integrating device |
| 09/02/2009 | CN201301695Y Four-link type oil pumping unit |
| 09/02/2009 | CN201301694Y Hydraulic jet pump separate zone oil production process pipe string |
| 09/02/2009 | CN201301693Y Twin-well compound-balanced beam pumping unit |
| 09/02/2009 | CN101523013A Peripheral sealing system for pre-tensioned screens |
| 09/02/2009 | CN101523012A Sub sea processing system |
| 09/02/2009 | CN101519961A Device and method for measuring embedding depth of proppant |
| 09/02/2009 | CN101519957A Proportion regulating and injecting system |
| 09/02/2009 | CN101519956A Barrier-crossing underwell communication |
| 09/02/2009 | CN101519955A Clamp spring high-pressure resistant body-free perforating bullet |
| 09/02/2009 | CN101519954A Multifunctional combination operation process and device for injection pump unit |
| 09/02/2009 | CN100535385C Method and system for removing fluid from a subterranean zone using an enlarged cavity |
| 09/02/2009 | CN100535384C Underground coal gasifier with air-lift point separating control and its process |
| 09/02/2009 | CN100535383C Method and system for accessing subterranean deposits |
| 09/02/2009 | CN100535382C Walking beam type pumping unit driven by linear motor |
| 09/02/2009 | CN100535381C Modeling, simulation and comparison of models for wormhole formation during matrix stimulation of carbonates |
| 09/01/2009 | US7582590 Subterranean treatment fluids, friction reducing copolymers, and associated methods |
| 09/01/2009 | US7581766 Reinforced tubular joint for improved sealing-tightness after plastic expansion |
| 09/01/2009 | US7581595 Coupler retained liner hanger mechanism and methods of setting a hanger inside a wellbore |
| 09/01/2009 | US7581594 Surfactant method for improved oil recovery from fractured reservoirs |
| 09/01/2009 | US7581592 System and method for the manufacture of fuel, fuelstock or fuel additives |
| 09/01/2009 | US7581591 Production casing ripper |
| 09/01/2009 | US7581590 Heterogeneous proppant placement in a fracture with removable channelant fill |
| 09/01/2009 | US7581589 Methods of producing alkylated hydrocarbons from an in situ heat treatment process liquid |