| 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) |
|---|
| 10/05/2011 | EP1268976B1 Viscosity reduction of viscoelastic surfactant based fluids |
| 10/05/2011 | CN202003496U Integrated power display instrument sensor system for sucker-rod pumping machine in oil field |
| 10/05/2011 | CN202001836U Medium-pressure gas collection device based on cluster well |
| 10/05/2011 | CN202001003U Sand-filling tube combination device simulating two-dimensional core |
| 10/05/2011 | CN202000995U System for testing liquid levels of observation wells to acquire in-situ key parameters of coal bed |
| 10/05/2011 | CN202000990U Skid-mounted oil-water in-situ separation and water return device |
| 10/05/2011 | CN202000989U Multi-sectional siphon gas anchor of oil pumping well |
| 10/05/2011 | CN202000988U Drainage viewing window of dehydrator |
| 10/05/2011 | CN202000987U Sewage separately discharging and storing device for gas gathering station of oil and gas field |
| 10/05/2011 | CN202000986U System for dynamically evaluating pollution of fracturing liquid |
| 10/05/2011 | CN202000985U Saturated steam regulate and control device |
| 10/05/2011 | CN202000984U Tandem throttling water nozzle for oil field water injection |
| 10/05/2011 | CN202000983U Separated-layer water injection clip-shaped streaming water nozzle |
| 10/05/2011 | CN202000982U Constant-flow and adjustable-flow double-function plug |
| 10/05/2011 | CN202000981U Eccentric water injection tool for highly deviated well |
| 10/05/2011 | CN202000980U Detection device capable of automatically switching oil inlets of two oil layers |
| 10/05/2011 | CN202000979U Double flow-pressure slicing mining device |
| 10/05/2011 | CN202000978U Parallel channel type flow controller for water cone control |
| 10/05/2011 | CN202000977U Sandblast perforating fracturing machine |
| 10/05/2011 | CN202000976U Linear drive device for petroleum and gas exploitation |
| 10/05/2011 | CN202000975U Linear motor high-level vector balanced pumping unit |
| 10/05/2011 | CN202000974U Unbalanced hydraulic pumping unit |
| 10/05/2011 | CN202000973U Control cabinet for drainage and extraction control system of coal-bed gas well |
| 10/05/2011 | CN202000972U Walking beam oil pumping unit capable of being subjected to non-stop balance regulation |
| 10/05/2011 | CN202000971U Long-stroke walking beam-free pumping unit |
| 10/05/2011 | CN202000970U Natural gas collecting device for production well of oil pumping unit |
| 10/05/2011 | CN202000969U Anti-pushing-up automatic unloading and clean-up tool |
| 10/05/2011 | CN202000968U Antifouling cover for oil pumping unit |
| 10/05/2011 | CN202000957U Steam injection packer |
| 10/05/2011 | CN202000949U Well head blocking device |
| 10/05/2011 | CN202000937U Anti-sand anti-gliding tool for gas well |
| 10/05/2011 | CN202000935U Cable protective tool for composite cable-transmitting perforation work |
| 10/05/2011 | CN202000913U Wet steam/gas liquid distribution three-way pipe |
| 10/05/2011 | CN1944951B Atmospheric cap injection polymer barrier developing buffer zone method for layered sandstone gas cap oil field |
| 10/05/2011 | CN1922385B Method and actuator device |
| 10/05/2011 | CN102209835A Heater and method for recovering hydrocarbons from underground deposits |
| 10/05/2011 | CN102209834A Method and tool for determination of fracture geometry in subterranean formations based on in-situ neutron activation analysis |
| 10/05/2011 | CN101769146B Metal-to-metal sealing tieback connector |
| 10/05/2011 | CN101666223B Intelligent drainage and mining method of coalbed methane well and intelligent drainage and mining equipment of coalbed methane well immersed pump |
| 10/05/2011 | CN101539009B Foam drainage well bore simulation experiment device for directional well |
| 10/05/2011 | CN101382058B Regulate for sustained center of common beam type double-well pumping unit |
| 10/05/2011 | CN101294486B Vertical energy-saving oil pumping machine |
| 10/05/2011 | CN101294484B Oil pumping equipment controlled with single stroke machine pump |
| 10/05/2011 | CN101270648B Shunting injection allocation method and shunting injection allocation machine |
| 10/04/2011 | USRE42772 Large particulate removal system |
| 10/04/2011 | US8030254 System, method, and apparatus for utilizing divalent brines in viscosified well treatment fluids |
| 10/04/2011 | US8030252 Drilling or fructuring fluid containing an oleaginous fluid ( diesel oil, cude oil, paraffin oil, olefin etc.) a fluid ( water, fresh or brine, glycerol, polyetheramine) that is partially immiscible with the oleaginous fluid, and emulsion facilitating particles; treating the subterranean formation |
| 10/04/2011 | US8030251 Methods and compositions relating to the hydrolysis of water-hydrolysable materials |
| 10/04/2011 | US8030250 Method of treating subterranean formations with carboxylated guar derivatives |
| 10/04/2011 | US8028768 Displaceable plug in a tool string filter |
| 10/04/2011 | US8028754 System and method for producing a well using a gas |
| 10/04/2011 | US8028753 System, method and apparatus for controlling the flow rate of an electrical submersible pump based on fluid density |
| 10/04/2011 | US8028751 Perforation method and apparatus |
| 10/04/2011 | US8028749 Expanding multiple tubular portions |
| 10/04/2011 | CA2643739C Diluent-enhanced in-situ combustion hydrocarbon recovery process |
| 10/04/2011 | CA2628471C Method and composition of preparing polymeric fracturing fluids |
| 10/04/2011 | CA2520141C Surface flow controlled valve and screen |
| 10/02/2011 | CA2735402A1 Indexing sleeve for single-trip, multi-stage fracing |
| 09/30/2011 | CA2738171A1 Wear-resistant separating device for removing sand and rock particles |
| 09/29/2011 | WO2011119874A1 Subterranean and marine-submersible electrical transmission system for oil and gas wells |
| 09/29/2011 | WO2011119785A2 Method and composition for enhanced oil recovery |
| 09/29/2011 | WO2011119756A2 Systems, apparatus, and methods of a dome retort |
| 09/29/2011 | WO2011119749A2 Double sealing labyrinth chamber for use with a downhole electrical submersible pump |
| 09/29/2011 | WO2011119479A1 Mass flow meter |
| 09/29/2011 | WO2011119448A2 Remotely operated isolation valve |
| 09/29/2011 | WO2011119316A1 VARIABLE Tg SHAPE MEMORY POLYURETHANE FOR WELLBORE DEVICES |
| 09/29/2011 | WO2011119198A1 Manifold string for selectively controlling flowing fluid streams of varying velocities in wells from a single main bore |
| 09/29/2011 | WO2011119157A1 Electrically operated isolation valve |
| 09/29/2011 | WO2011119038A1 Ejector for use in context of oil recovery |
| 09/29/2011 | WO2011117578A1 Methods and compositions for sand control in injection wells |
| 09/29/2011 | WO2011082097A3 Gas lift barrier valve |
| 09/29/2011 | WO2011058187A3 Method and system for lining a section of a wellbore with an expandable tubular element |
| 09/29/2011 | WO2011044260A3 Method for hydrocarbon removal and recovery from drill cuttings |
| 09/29/2011 | WO2010136764A3 Fracture monitoring |
| 09/29/2011 | US20110236225 System, apparatus, and method for rapid pump displacement configuration |
| 09/29/2011 | US20110232914 Method for maintaining wellbore pressure |
| 09/29/2011 | US20110232913 Sediment Transport By Fully Developed Turbulent Flows |
| 09/29/2011 | US20110232912 System and method for hydraulically powering a seafloor pump for delivering produced fluid from a subsea well |
| 09/29/2011 | US20110232909 Methods and apparatuses for mixing drilling fluids |
| 09/29/2011 | US20110232908 Additive and method for servicing subterranean wells |
| 09/29/2011 | US20110232907 Laminar phase ring for fluid transport applications |
| 09/29/2011 | US20110232906 Methods and Compositions for Sand Control in Injection Wells |
| 09/29/2011 | US20110232905 Zero Shear Viscosifying Agent |
| 09/29/2011 | US20110232904 Method and composition for oil enhanced recovery |
| 09/29/2011 | US20110232903 Enhanced bitumen recovery using high permeability pathways |
| 09/29/2011 | US20110232900 Compliant expansion swage |
| 09/29/2011 | US20110232894 Artificial oil lifting unit using absorbent belts |
| 09/29/2011 | CA2794459A1 Variable tg shape memory polyurethane for wellbore devices |
| 09/29/2011 | CA2794452A1 Subterranean and marine-submersible electrical transmission system for oil and gas wells |
| 09/29/2011 | CA2794347A1 Manifold string for selectively controlling flowing fluid streams of varying velocities in wells from a single main bore |
| 09/29/2011 | CA2793947A1 Systems, apparatus, and methods of a dome retort |
| 09/29/2011 | CA2793935A1 Double sealing labyrinth chamber for use with a downhole electrical submersible pump |
| 09/29/2011 | CA2791420A1 Methods and compositions for sand control in injection wells |
| 09/29/2011 | CA2735455A1 Method to decrease viscosity of gelled oil |
| 09/28/2011 | EP2369129A2 Methods and apparatus relating to expansion tools for tubular strings |
| 09/28/2011 | EP2368061A2 Hydraulic unloading valve |
| 09/28/2011 | EP2368014A1 Setting tool for expandable liner hanger and associated methods |
| 09/28/2011 | EP2368013A2 Expanding a tubular element in a wellbore |
| 09/28/2011 | EP2368012A1 Method and apparatus for forming a tubular conduit |
| 09/28/2011 | EP2106494B1 Tractor communication/control and select fire perforating switch |