| 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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| 07/13/2011 | CN102121364A Well structure of pressure-releasing coal bed gas ground extraction well and arrangement method thereof |
| 07/13/2011 | CN102121363A Single-drive multi-well rodless hydraulic oil extracting device |
| 07/13/2011 | CN102121362A Movable well mouth production device |
| 07/13/2011 | CN102121355A Heat-insulating oil tube connecting structure of which user end of pipe-end inner pipe is welded fixedly |
| 07/13/2011 | CN102121354A Heat-insulating oil tube connecting structure of which factory end of pipe-end inner pipe is welded fixedly |
| 07/13/2011 | CN102121353A Split assembly heat-insulating oil pipe connecting structure |
| 07/13/2011 | CN101265798B Sieve tube free composite fracturing fibre sand prevention process |
| 07/12/2011 | US7977285 Hydrocarbon fluid compositions and methods for using same |
| 07/12/2011 | US7977284 Non-estrogenic alkylphenol derivatives |
| 07/12/2011 | US7977282 Chemical amendments for the stimulation of biogenic gas generation in deposits of carbonaceous material |
| 07/12/2011 | US7977281 Methods for minimizing the amount of graphite particles used during drilling operations |
| 07/12/2011 | US7977056 Methods of identifying stimulants for biogenic methane production from hydrocarbon-bearing formations |
| 07/12/2011 | US7976247 Dual pressure cylinder |
| 07/12/2011 | US7975767 Apparatus for controlling a downhole device |
| 07/12/2011 | US7975764 Emulsion system for sand consolidation |
| 07/12/2011 | US7975763 Process for enhanced production of heavy oil using microwaves |
| 07/12/2011 | US7975762 Biogenic fuel gas generation in geologic hydrocarbon deposits |
| 07/12/2011 | US7975592 Perforating apparatus, firing assembly, and method |
| 07/12/2011 | CA2766026A1 Tools and methods for use in completion of a wellbore |
| 07/12/2011 | CA2689962C Expanding multiple tubular portions |
| 07/12/2011 | CA2650632C Perforating and fracturing |
| 07/12/2011 | CA2629204C Non-aqueous foam composition for gas lift injection and methods for making and using same |
| 07/12/2011 | CA2621598C Polymer mixtures for crosslinked fluids |
| 07/12/2011 | CA2620344C Toe-to-heel waterflooding with progressive blockage of the toe region |
| 07/12/2011 | CA2547185C Method for treating a subterranean formation |
| 07/12/2011 | CA2541407C Perforating a well formation |
| 07/12/2011 | CA2502196C Fracture stimulation process for carbonate reservoirs |
| 07/12/2011 | CA2485664C Downhole tool deployment safety system and methods |
| 07/12/2011 | CA2475004C Method of acidizing a subterranean formation with diverting foam or fluid |
| 07/11/2011 | CA2724058A1 Steam driven pump for sagd system |
| 07/07/2011 | WO2011082202A2 Apparatus and method for pumping a fluid and an additive from a downhole location into a formation or to another location |
| 07/07/2011 | WO2011082097A2 Gas lift barrier valve |
| 07/07/2011 | WO2011081947A2 System, method and assembly for steam distribution along a wellbore |
| 07/07/2011 | WO2011081812A1 A method of determining queried fluid cuts along a tubular |
| 07/07/2011 | WO2011081665A1 Sequestering co2 and releasing natural gas from coal and gas shale formations |
| 07/07/2011 | WO2011081550A1 Hydraulic fracturing system |
| 07/07/2011 | WO2011081549A1 Proppant placement |
| 07/07/2011 | WO2011081547A1 Synthesis of degradable polymers downhole for oilfield applications |
| 07/07/2011 | WO2011081546A1 A method of fluid slug consolidation within a fluid system in downhole applications |
| 07/07/2011 | WO2011081544A1 Method for controlling the trajectory of a hydraulic fracture in strata containing natural fractures |
| 07/07/2011 | WO2011081529A1 Control of subsea cyclone |
| 07/07/2011 | WO2011080759A1 Additive and method for removal of impurities formed due to sulfur compounds in crude oils containing calcium naphthenate |
| 07/07/2011 | WO2011080498A1 Process and apparatus to improve reliability of pinpoint stimulation operations |
| 07/07/2011 | WO2011080291A2 Downhole perforation tool |
| 07/07/2011 | WO2011079742A1 Controllable pulse gas energy fracturing machine |
| 07/07/2011 | WO2011079391A1 Wellbore treatment apparatus and method |
| 07/07/2011 | WO2011056393A3 Systems and methods for initiating annular obstruction in a subsurface well |
| 07/07/2011 | WO2011041525A3 Method and system for running subsea test tree and control system without conventional umbilical |
| 07/07/2011 | WO2011034679A3 Water heating apparatus for continuous heated water flow and method for use in hydraulic fracturing |
| 07/07/2011 | WO2011008544A3 Wellbore laser operations |
| 07/07/2011 | WO2011008405A3 Isotopic identification of production by individual formations in commingled gas wells |
| 07/07/2011 | WO2010124932A3 Method for heating the ground, related system and use thereof |
| 07/07/2011 | WO2010029322A3 A riser connector |
| 07/07/2011 | WO2009073475A3 Pulse fracturing device and method |
| 07/07/2011 | US20110162853 Method and apparatus for the dampening of shocks in the borehole of wells |
| 07/07/2011 | US20110162850 Slant well desalination feedwater supply system and method for constructing same |
| 07/07/2011 | US20110162849 Method and System for Determining Formation Properties Based on Fracture Treatment |
| 07/07/2011 | US20110162848 Fluid Injection Completion Techniques |
| 07/07/2011 | US20110162846 Multiple Interval Perforating and Fracturing Methods |
| 07/07/2011 | US20110162840 Wellbore Method and Apparatus For Sand and Inflow Control During Well Operations |
| 07/07/2011 | US20110162839 Retrofit wellbore fluid injection system |
| 07/07/2011 | US20110162838 System and method for proppant transfer |
| 07/07/2011 | US20110162837 Filtration of Dangerous or Undesirable Contaminants |
| 07/07/2011 | US20110162833 Downhole Separator |
| 07/07/2011 | US20110162832 Gas boost pump and crossover in inverted shroud |
| 07/07/2011 | CA2786077A1 Additive and method for removal of impurities formed due to sulfur compounds in crude oils containing calcium naphthenate |
| 07/07/2011 | CA2786023A1 Hydraulic fracturing system |
| 07/07/2011 | CA2786021A1 Synthesis of degradable polymers downhole for oilfield applications |
| 07/07/2011 | CA2785955A1 A method of fluid slug consolidation within a fluid system in downhole applications |
| 07/07/2011 | CA2785793A1 Method for controlling a hydraulic fracture path in formations containing natural fractures |
| 07/07/2011 | CA2785765A1 Control of subsea cyclone |
| 07/07/2011 | CA2785735A1 Apparatus and method for pumping a fluid and an additive from a downhole location into a formation or to another location |
| 07/07/2011 | CA2785713A1 Wellbore treatment apparatus and method |
| 07/07/2011 | CA2784284A1 System, method and assembly for steam distribution along a wellbore |
| 07/06/2011 | EP2341212A1 Downhole perforation tool |
| 07/06/2011 | EP2340353A1 Device and method for remediating and separating gas accumulations in waterways |
| 07/06/2011 | EP2220338B1 Method of injecting carbon dioxide |
| 07/06/2011 | CN201891409U Continuous automatic heat treatment device for landing fuel |
| 07/06/2011 | CN201891408U Protecting sleeve type pressure release perforator |
| 07/06/2011 | CN201891394U Twist-preventing rope hanger for oil pumping unit |
| 07/06/2011 | CN1727636B Method and system for accessing subterranean deposits from the surface |
| 07/06/2011 | CN102119259A Bitumen production method |
| 07/06/2011 | CN102119258A Systems and methods for producing oil and/or gas |
| 07/06/2011 | CN102119257A Systems and methods for producing oil and/or gas |
| 07/06/2011 | CN102119256A Power generation |
| 07/06/2011 | CN102119053A Storing device for stored substance and method for storing stored substance |
| 07/06/2011 | CN102116245A Device capable of generating electricity and extracting oil at sea through wave energies |
| 07/06/2011 | CN102116169A Drainage method for pressure-relief gas baseboard stonehead of protected seam |
| 07/06/2011 | CN102116168A Gas drainage system and method for hyposmosis soft coal seams |
| 07/06/2011 | CN102116167A Ground and underground three-dimensional extraction system of coal seam gas |
| 07/06/2011 | CN102116149A Round-table-barrel-shaped near-well-bore shear simulating device with three layers of compaction sand bodies |
| 07/06/2011 | CN102116145A Method for increasing yield and injection of low-permeability oil field |
| 07/06/2011 | CN102116144A Integrated method for thin oil blending, viscosity reduction, extraction and transportation of thickened oil |
| 07/06/2011 | CN102116143A Method for extracting oil by utilizing indigenous microbe of oil pool subjected to polymer flooding |
| 07/06/2011 | CN102116142A Water injection flow controller |
| 07/06/2011 | CN102116141A Torque energy-saving pumping unit |
| 07/06/2011 | CN102116140A Construction method for enhancing extraction effect of ground coal bed gas |
| 07/06/2011 | CN102116137A Blanking plug for eccentric water distributor |
| 07/06/2011 | CN101161988B In situ combustion slug and steam driving combined type crude oil producing method |
| 07/06/2011 | CN101142373B Arrangement for the cleaning of a pipe separator |