| 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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| 07/12/2007 | WO2007078995A1 Low density proppant particles and use thereof |
| 07/12/2007 | WO2007078350A2 Apparatus for extraction of hydrocarbon fuels or contaminants using electrical energy and critical fluids |
| 07/12/2007 | WO2007077418A1 Compositions and methods for stimulating liquid-sensitive subterranean formations |
| 07/12/2007 | WO2007077411A1 Wellbore intervention tool |
| 07/12/2007 | WO2007077138A1 Enhanced oil recovery process and a process for the sequestration of carbon dioxide |
| 07/12/2007 | WO2007077137A1 A process for enhanced oil recovery and a process for the sequestration of carbon dioxide |
| 07/12/2007 | WO2007031001A8 Compound perforator without body |
| 07/12/2007 | US20070161516 Filtrate reducer for drilling muds |
| 07/12/2007 | US20070161515 Method for the fracture stimulation of a subterranean formation having a wellbore by using impact-modified thermoset polymer nanocomposite particles as proppants |
| 07/12/2007 | US20070158109 Perforating Gun |
| 07/12/2007 | US20070158081 Expandable tubulars |
| 07/12/2007 | US20070158080 Tubular hanger and method of lining a drilled bore |
| 07/12/2007 | US20070158075 System and process for pumping multiphase fluids |
| 07/12/2007 | US20070158074 Critical velocity reduction in a gas well |
| 07/12/2007 | US20070158073 Fracking multiple casing exit laterals |
| 07/12/2007 | US20070158072 Drilling and opening reservoirs using an oriented fissure to enhance hydrocarbon flow |
| 07/12/2007 | US20070158071 Apparatus and method for selective actuation of downhole tools |
| 07/12/2007 | US20070158065 Zone isolation assembly array for isolating a plurality of fluid zones in a subsurface well |
| 07/12/2007 | US20070158064 Method of determining a fluid inflow profile of wellbore |
| 07/12/2007 | US20070158061 Interference-seal plunger for an artificial lift system |
| 07/12/2007 | CA2745735A1 Method for extraction of hydrocarbon fuels or contaminants using electrical energy and critical fluids |
| 07/12/2007 | CA2635761A1 Low density proppant particles and use thereof |
| 07/11/2007 | EP1805276A1 Metal-mediated viscosity reduction of fluids gelled with viscoelastic surfactants |
| 07/11/2007 | CN2921366Y Separate extracting separate delivery oil-well pump |
| 07/11/2007 | CN2921365Y Driving structure for beam-pumping unit sucker rod |
| 07/11/2007 | CN2921272Y Metering multifunction water injection well choke waterflooding device |
| 07/11/2007 | CN2921270Y Fast assembling horizontal convection section |
| 07/11/2007 | CN2921260Y Drilling fluid two-stage degassing unit |
| 07/11/2007 | CN1996719A Direct drive permanent magnet synchronous motor for screw pump |
| 07/11/2007 | CN1995699A Gas pretreatment device for logging and its alarming controller |
| 07/11/2007 | CN1995698A Fire-flooding layered gas-injection method |
| 07/11/2007 | CN1995697A Oil reservoir fire-flooding thermal-ignition method |
| 07/11/2007 | CN1995696A Polymer flooding whole-process division method and comprehensive adjustment method |
| 07/11/2007 | CN1995695A Re-injection method for produced-water desorption oxygen-removal mixing polymer for improving petroleum recovery efficiency |
| 07/11/2007 | CN1995694A Oil displacement method by injecting indigenous microorganism into sewage |
| 07/11/2007 | CN1995693A Supported auto-balancing self-service type pumping unit |
| 07/11/2007 | CN1995295A Technology of coal bed gas as automobile fuel |
| 07/11/2007 | CN1325798C Permanently-non-plugging oil well pump sand-filtering machine |
| 07/11/2007 | CN1325756C Enclosed return circuit hydraulic beam-pumping unit utilizing frequency conversion technology |
| 07/11/2007 | CN1325755C Method for beating donkey head of oil-field pumping unit |
| 07/11/2007 | CN1325598C Microcapsule degelling agent and its preparation method |
| 07/10/2007 | US7241077 Underwater installation apparatus |
| 07/10/2007 | US7241075 Umbilical anchoring clamp |
| 07/10/2007 | US7240928 Tubing connection arrangement |
| 07/10/2007 | US7240739 Well fluid control |
| 07/10/2007 | US7240736 Drilling and producing deep water subsea wells |
| 07/10/2007 | US7240734 System and method for fail-safe disconnect from a subsea well |
| 07/10/2007 | US7240733 Pressure-actuated perforation with automatic fluid circulation for immediate production and removal of debris |
| 07/10/2007 | US7240731 Shoe for expandable liner system and method |
| 07/10/2007 | US7240729 Apparatus for expanding a tubular member |
| 07/10/2007 | US7240728 Expandable tubulars with a radial passage and wall portions with different wall thicknesses |
| 07/10/2007 | CA2459053C Tubing expansion |
| 07/10/2007 | CA2442963C Flow control apparatus for use in a wellbore |
| 07/10/2007 | CA2341295C Device for drilling or draining holes in soil or rock |
| 07/10/2007 | CA2317714C Introduction of air into injection water |
| 07/10/2007 | CA2280895C Determination of properties of oil |
| 07/10/2007 | CA2259119C Connection module for a submergible pumping system and method for pumping fluid using such a module |
| 07/10/2007 | CA2219206C Activating means for drilling apparatus |
| 07/09/2007 | CA2532272A1 Extender for drywell filters |
| 07/09/2007 | CA2532001A1 Filter raiser for filtered infiltration well |
| 07/05/2007 | WO2007075855A2 Concentric coiled tubing annular fracturing string |
| 07/05/2007 | WO2007075087A1 A method and device for stimulation of an underground well |
| 07/05/2007 | WO2007047655A3 System and method for performing multiple downhole operations |
| 07/05/2007 | US20070156377 Integrated reservoir optimization |
| 07/05/2007 | US20070155629 Organophilic clays and methods for the preparation and use thereof |
| 07/05/2007 | US20070151766 Mechanical and fluid jet horizontal drilling method and apparatus |
| 07/05/2007 | US20070151738 Slidable sleeve plunger |
| 07/05/2007 | US20070151735 Concentric coiled tubing annular fracturing string |
| 07/05/2007 | US20070151734 Method and apparatus for wellbore fluid treatment |
| 07/05/2007 | US20070151733 Production of natural gas from hydrates |
| 07/05/2007 | US20070151731 Localized fracturing system and method |
| 07/05/2007 | US20070151729 Methods of stimulating liquid-sensitive subterranean formations |
| 07/05/2007 | US20070151728 Method to detect low salinity injection water encroachment into oil formations |
| 07/05/2007 | US20070151726 Methods and Compositions for Diverting Acid Fluids in Wellbores |
| 07/05/2007 | US20070151725 Expanding a tubular member |
| 07/04/2007 | EP1803893A1 Method of installing horizontal drains for collecting seawater |
| 07/04/2007 | EP1802846A2 Expandable seal |
| 07/04/2007 | CN2918791Y Pumping unit reversing arrangement |
| 07/04/2007 | CN2918790Y Hydraulic booster system for oil well re-injection sucker-rod pump |
| 07/04/2007 | CN2918728Y Water injection adjustable concentric water distributor capable of pulling and running |
| 07/04/2007 | CN2918727Y Pumping unit deflection-adjusting arrangement |
| 07/04/2007 | CN1993534A Oilfield enhanced in situ combustion process |
| 07/04/2007 | CN1991170A Double mule head secondary regulation hydraulic pumping unit |
| 07/04/2007 | CN1991127A Method for improving crude oil recovery efficiency through three-dimensional water injection between horizontal wells having two human crack surfaces |
| 07/03/2007 | US7239967 Method, computer program product and use of a computer program for stabilizing a multiphase flow |
| 07/03/2007 | US7238648 Viscoelastic surfactant fluids and related methods of use |
| 07/03/2007 | US7238647 Method and fluid for controlling the saturation of a formation around a well |
| 07/03/2007 | US7237627 Bearing and lubrication system for earth boring bit |
| 07/03/2007 | US7237614 Potable well conversion device |
| 07/03/2007 | US7237612 Methods of initiating a fracture tip screenout |
| 07/03/2007 | US7237610 The degradable particulates having a mean particulate diameter of at least about 20 times smaller than the mean particle diameter of the macro-particulates |
| 07/03/2007 | US7237609 Methods for producing fluids from acidized and consolidated portions of subterranean formations |
| 07/03/2007 | US7237608 Self diverting matrix acid |
| 07/03/2007 | US7237486 Low debris perforating gun system for oriented perforating |
| 07/03/2007 | CA2467875C Method and apparatus using traction seal fluid displacement device for pumping wells |
| 07/03/2007 | CA2457294C Expandable seal |
| 07/03/2007 | CA2399601C Perforating gun firing head with vented block for holding detonator |
| 07/03/2007 | CA2299695C Producing electrical energy from natural gas using a solid oxide fuel cell |
| 07/03/2007 | CA2221191C Separator systems for well production fluids |
| 06/28/2007 | WO2007073401A1 Method and apparatus to hydraulically bypass a well tool |