| 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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| 01/07/2009 | CN100449111C System for sealing a space in a wellbore |
| 01/06/2009 | US7473672 Administering down a gas or oil well polymeric particles having covalently bound well treatment chemicals, such as scale inhibitors, foaming agents, corrosion inhibitors, biocides, surfactants, and oxygen scavengers; the bonds can be split in an aqueous environment to release the chemical; filter tubes |
| 01/06/2009 | US7472927 Tubular member having an anti-galling coating |
| 01/06/2009 | US7472763 Wear resistant tubular connection |
| 01/06/2009 | US7472756 Valve apparatus with seal assembly |
| 01/06/2009 | US7472755 Method for inspection and repair of a flexible joint |
| 01/06/2009 | US7472751 Method of treating subterranean formations using mixed density proppants or sequential proppant stages |
| 01/06/2009 | US7472750 Single trip horizontal gravel pack and stimulation system and method |
| 01/06/2009 | US7472747 Biological enhancement of hydrocarbon extraction |
| 01/06/2009 | CA2443007C Bore-lining tubing |
| 01/06/2009 | CA2426306C Gas displaced chamber lift system with closed loop/multi-stage vents |
| 01/06/2009 | CA2426305C Gas displaced chamber lift system having gas lift assist |
| 01/01/2009 | US20090003131 Enhanced oil recovery using multiple sonic sources |
| 01/01/2009 | US20090001802 Extraction of Actinides From Mixtures and Ores Using Dendritic Macromolecules |
| 01/01/2009 | US20090001721 Protective sleeve for threaded connections for expandable liner hanger |
| 01/01/2009 | US20090000794 Tubing expansion |
| 01/01/2009 | US20090000791 Fluid Lift System |
| 01/01/2009 | US20090000790 Short stroke piston pump |
| 01/01/2009 | US20090000789 Device, Method And Program Product To Automatically Detect And Break Gas Locks In An ESP |
| 01/01/2009 | US20090000788 Heave Compensated Snubbing System and Method |
| 01/01/2009 | US20090000787 Inflow control device |
| 01/01/2009 | US20090000786 Methods of producing flow-through passages in casing, and methods of using such casing |
| 01/01/2009 | US20090000783 Apparatus and method |
| 01/01/2009 | US20090000781 Wellhead Assembly and Method for An Injection Tubing String |
| 12/31/2008 | WO2009003099A1 Device, method and program product to automatically detect and break gas locks in an esp |
| 12/31/2008 | WO2009002615A1 Method of completing a well with sand screens |
| 12/31/2008 | WO2009002204A1 Arrangement for low frequency wave effect on the perforation zone of the well casting pipe |
| 12/31/2008 | WO2009002187A1 High pressure, high voltage penetrator assembly |
| 12/31/2008 | WO2009001256A2 Methods of producing flow-through passages in casing, and methods of using such casing |
| 12/31/2008 | WO2009001073A2 Downhole apparatus |
| 12/31/2008 | WO2009001069A2 Permeability modification |
| 12/31/2008 | WO2009000396A2 Method and apparatus to cement a perforated casing |
| 12/31/2008 | WO2008140670B1 Downhole tubular expansion tool and method |
| 12/31/2008 | WO2008140670A4 Downhole tubular expansion tool and method |
| 12/31/2008 | WO2008134311B1 Restrictor valve mounting for downhole screens |
| 12/31/2008 | WO2008134311A4 Restrictor valve mounting for downhole screens |
| 12/31/2008 | WO2007098100A3 Method for producing viscous hydrocarbon using steam and carbon dioxide |
| 12/31/2008 | EP2009231A1 Method of producing crude oil |
| 12/31/2008 | EP2009227A1 Method and apparatus to cement a perforated casing |
| 12/31/2008 | EP2009076A1 Method for stimulating hydrocarbon production and reducing the production of water from a subterranean formation |
| 12/31/2008 | EP2007970A2 Dispersive riserless drilling fluid |
| 12/31/2008 | EP2007968A2 Wellbore method and apparatus for sand and inflow control during well operations |
| 12/31/2008 | EP2007967A2 A system and method for estimating supercharge pressure and initial pressure of a formation |
| 12/31/2008 | CN201173111Y Gas-tight sand preventing screen pipe |
| 12/31/2008 | CN201173110Y Oil pumping equipment with hot pipe type pumping rod |
| 12/31/2008 | CN201173109Y Heat insulation compensation apparatus for thick oil steam injection exploitation |
| 12/31/2008 | CN201173108Y Oil well down-hole liquid continuous medicament-adding device |
| 12/31/2008 | CN201173107Y Wellhead continuous medicament-adding device |
| 12/31/2008 | CN201173106Y Bridge type eccentric water distributing apparatus |
| 12/31/2008 | CN201173105Y Beam balancing oil pumping machine balancer |
| 12/31/2008 | CN201173104Y Composite balancing beam type oil pumping machine possessing load loss protection function |
| 12/31/2008 | CN201173103Y Cluster well long stroke intelligent oil pumping machine |
| 12/31/2008 | CN201173099Y Oil pumping machine unloading and calibration device |
| 12/31/2008 | CN201172607Y Mooring winch for ocean platform |
| 12/31/2008 | CN101333922A Fracturing process for removing breakdown fluid contamination |
| 12/31/2008 | CN101333921A Water borne conduit wiring suspension device |
| 12/31/2008 | CN101333920A Inflow control device |
| 12/31/2008 | CN101333919A Energy-saving oil pumping machine |
| 12/31/2008 | CN101333918A Beam type oil pumping machine linkage rod device |
| 12/31/2008 | CN101333917A Elastic tube-type thermal production casing head |
| 12/31/2008 | CN100447372C Shallow drill assembly with separate jet pump |
| 12/31/2008 | CA2692432A1 Method of completing a well with sand screens |
| 12/31/2008 | CA2687591A1 Methods of producing flow-through passages in casing, and methods of using such casing |
| 12/30/2008 | US7469748 Submersible pumping system |
| 12/30/2008 | US7469746 Downhole sampling tool and method for using same |
| 12/30/2008 | US7469745 Apparatus and method to mechanically orient perforating systems in a well |
| 12/30/2008 | US7469743 Inflow control devices for sand control screens |
| 12/30/2008 | CA2550988C Gel mixing system |
| 12/30/2008 | CA2543408C Method for providing a temporary barrier in a flow pathway |
| 12/30/2008 | CA2540988C Improved fracturing fluid and method of use |
| 12/30/2008 | CA2520217C Method of enhancing hydraulic fracturing using ultra lightweight proppants |
| 12/30/2008 | CA2439963C Offshore floating production method |
| 12/30/2008 | CA2405692C Mineral acid enhanced thermal treatment for viscosity reduction of oils (ecb-0002) |
| 12/30/2008 | CA2377943C System for improving coalbed gas production |
| 12/30/2008 | CA2301485C Additive for wellbore fluids |
| 12/30/2008 | CA2297185C Fluids containing viscoelastic surfactant and methods for using the same |
| 12/28/2008 | CA2636523A1 Acidic internal breaker system for viscoelastic surfactant fluids in brine |
| 12/28/2008 | CA2635868A1 Oxidative internal breaker system with breaking activators for viscoelastic surfactant fluids |
| 12/26/2008 | CA2635816A1 Downhole linear actuation apparatus and method |
| 12/26/2008 | CA2592717A1 System and method for polymer distribution to well sites |
| 12/25/2008 | US20080314638 Apparatus and Methods to Dissipate Heat in a Downhole Tool |
| 12/25/2008 | US20080314600 Well Treatment Device, Method and System |
| 12/25/2008 | US20080314596 Apparatus and method for wellbore isolation |
| 12/25/2008 | US20080314595 Well Jet Device and the Operating Method Thereof |
| 12/25/2008 | US20080314594 Method of Heterogeneous Etching of Sandstone Formations |
| 12/25/2008 | US20080314593 In situ thermal processing of an oil shale formation using a pattern of heat sources |
| 12/25/2008 | US20080314591 Single trip well abandonment with dual permanent packers and perforating gun |
| 12/25/2008 | US20080314590 Inflow control device |
| 12/25/2008 | US20080314589 System and method for creating a gravel pack |
| 12/25/2008 | US20080314588 System and method for controlling erosion of components during well treatment |
| 12/25/2008 | US20080314581 Unlimited stroke drive oil well pumping system |
| 12/25/2008 | US20080314578 Downhole jet pump |
| 12/25/2008 | US20080314577 Stress, strain and fatigue measuring of well piping |
| 12/24/2008 | WO2008157547A1 Chemical amendments for the stimulation of biogenic gas generation in deposits of carbonaceous material |
| 12/24/2008 | WO2008157279A1 Safety vent device |
| 12/24/2008 | WO2008156775A1 Downhole jet pump |
| 12/24/2008 | WO2008155578A1 Flow restrictor coupling |
| 12/24/2008 | WO2008134371A3 Use of curable liquid elastomers to produce gels for treating a wellbore |
| 12/24/2008 | WO2008131169A3 In situ recovery from residually heated sections in a hydrocarbon containing formation |
| 12/24/2008 | WO2008115074A3 Subsea installation and method for separation of liquid and gas |