| 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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| 07/09/2008 | CN201083122Y Constant-current water distribution device |
| 07/09/2008 | CN201083121Y Water injection device |
| 07/09/2008 | CN201083120Y Down-hole filtering device for water injection well |
| 07/09/2008 | CN201083119Y Oil gas well completion temporary block liner tube |
| 07/09/2008 | CN201083118Y Walking type one-machine multi-well ground surface orbit oil pumping device |
| 07/09/2008 | CN201083117Y Walking type one-machine multi-well oil pumping device |
| 07/09/2008 | CN201083116Y Pumping unit maintenance hydraulic lifting platform |
| 07/09/2008 | CN201083115Y Swing link type beam-pumping unit |
| 07/09/2008 | CN201083111Y Water injection well non-killing well environmental protection operation down-hole switch |
| 07/09/2008 | CN201083108Y Regulating valve for adjusting liquid flux and pressure of injection pipeline |
| 07/09/2008 | CN201083107Y Water well subdivision packer |
| 07/09/2008 | CN201082902Y Device for protecting fire tube type heating furnace smoke and fire pipe cathode |
| 07/09/2008 | CN101218414A Method and installation for connecting a rigid submarine pipeline and a flexible submarine pipeline |
| 07/09/2008 | CN101216028A Hydraulic power oil pump |
| 07/09/2008 | CN101215964A Coal seam depth deflagration method |
| 07/09/2008 | CN101215963A High pressure water injection electric motor control method and device |
| 07/09/2008 | CN101215962A Pumping well drip-free pipe column oil drainage technology |
| 07/09/2008 | CN101215961A T-type beam structure energy-saving oil pumping machine |
| 07/09/2008 | CN100400794C Method and system for accessing substerranean deposits from the surface |
| 07/09/2008 | CN100400793C Methods and systems for heating a hydrocarbon containing formation in situ with an opening contacting the earth's surface at two locations |
| 07/09/2008 | CN100400792C Shoe for expandable liner system |
| 07/09/2008 | CN100400171C Multiple air-intaking channel and supersonic speed whirl-flow separator and its back pressure device |
| 07/09/2008 | CA2574244A1 Hydrocarbon production system and method of use |
| 07/09/2008 | CA2573503A1 Method for terminating or reducing water flow in a subterranean formation |
| 07/08/2008 | US7396216 Submersible pump assembly for removing a production inhibiting fluid from a well and method for use of same |
| 07/08/2008 | US7395866 Method and apparatus for blow-out prevention in subsea drilling/completion systems |
| 07/08/2008 | US7395865 Gas lift plunger arrangement |
| 07/08/2008 | US7395864 Method and apparatus for preventing slug flow in pipelines |
| 07/08/2008 | US7395863 Method of treating a subterranean formation with an oil-based composition containing a polysaccharide-based water-superabsorbent material |
| 07/08/2008 | US7395859 Method for growth of a hydraulic fracture along a well bore annulus and creating a permeable well bore annulus |
| 07/08/2008 | US7395858 Process for the selective controlled reduction of the relative water permeability in high permeability oil-bearing subterranean formations |
| 07/08/2008 | US7395857 Methods and apparatus for expanding tubing with an expansion tool and a cone |
| 07/08/2008 | CA2517801C Rotating stuffing box with split standpipe |
| 07/08/2008 | CA2497303C Three-dimensional well system for accessing subterranean zones |
| 07/08/2008 | CA2471336C Expandable borehole liner |
| 07/08/2008 | CA2467863C Downhole sampling apparatus and method |
| 07/08/2008 | CA2465933C Methods and apparatus for reforming and expanding tubulars in a wellbore |
| 07/08/2008 | CA2445698C Crude oil recovery system |
| 07/08/2008 | CA2406741C In situ recovery of hydrocarbons from a kerogen-containing formation |
| 07/08/2008 | CA2387546C Fluid profile control in enhanced oil recovery |
| 07/08/2008 | CA2382187C Well screen having an internal alternate flowpath |
| 07/08/2008 | CA2299790C Method and apparatus for stimulating heavy oil production |
| 07/08/2008 | CA2219621C Foamable gel composition |
| 07/05/2008 | CA2573189A1 Artificial lift system |
| 07/03/2008 | WO2008079985A1 Linear motor to control hydraulic force |
| 07/03/2008 | WO2008079978A2 System and method for cleaning drill cuttings with degassed water |
| 07/03/2008 | WO2008079882A2 Integrated flow control device and isolation element |
| 07/03/2008 | WO2008079799A2 Method and system for automated choke control on a hydrocarbon producing well |
| 07/03/2008 | WO2008079782A2 Production actuated mud flow back valve |
| 07/03/2008 | WO2008079777A2 Material sensitive downhole flow control device |
| 07/03/2008 | WO2008079485A2 Smart actuation materials triggered by degradation in oilfield environments and methods of use |
| 07/03/2008 | WO2008077895A1 Polyamide beads and method for producing such beads |
| 07/03/2008 | WO2008077316A1 Beam pumping unit with a suspended-weight balance mechanism |
| 07/03/2008 | WO2008077200A1 Method for increasing the oil recovery of a productive formation |
| 07/03/2008 | WO2008048455A3 Enhanced shale oil production by in situ heating using hydraulically fractured producing wells |
| 07/03/2008 | WO2008045408B1 Method for producing viscous hydrocarbon using steam and carbon dioxide |
| 07/03/2008 | US20080161211 Subterranean Treatment Fluids, Friction Reducing Copolymers, and Associated Methods |
| 07/03/2008 | US20080161208 Networked polymeric gels and use of such polymeric gels in hydrocarbon recovery |
| 07/03/2008 | US20080157584 System and method for identifying productive gas shale formations |
| 07/03/2008 | US20080156716 Arrangement Related to a Separator for the Cleaning of Such Separator |
| 07/03/2008 | US20080156496 Methods and Devices for Treating Multiple-Interval Well Bores |
| 07/03/2008 | US20080156495 Method of using radial thrust elements to re-enter a previously-installed tubular in a lateral |
| 07/03/2008 | US20080156494 Method and apparatus for cutting and removal of pipe from wells |
| 07/03/2008 | US20080156490 Proppant entrainment prevention method |
| 07/03/2008 | US20080156489 Methods For Preventing Proppant Carryover From Fractures, And Gravel-Packed Filters |
| 07/03/2008 | US20080156482 Method for the Treatment of the Obstructed Zones of the Parent Rock of Hydrocarbon-Producing Strata Adjacent to a Gas and Oil Well Drilling Zone in Order to Increase Productivity |
| 07/03/2008 | US20080156481 Ceramic screen |
| 07/03/2008 | US20080156480 Apparatus for expanding a tubular member |
| 07/03/2008 | DE102006062679A1 Drilling locations finding method for use of geothermal heat for energy supply, involves selecting drilling location based on usage condition of drilling locations, and assigning geothermal gradients to selected drilling location |
| 07/03/2008 | CA2681907A1 Methods of oil and gas production using waste water from water purification processing |
| 07/03/2008 | CA2673086A1 polyamide beads and method for producing such beads |
| 07/03/2008 | CA2673060A1 Radiation processing of heavy oils |
| 07/03/2008 | CA2673051A1 Linear motor to control hydraulic force |
| 07/03/2008 | CA2672754A1 Material sensitive downhole flow control device |
| 07/02/2008 | EP1939393A1 Sustainable method for recovery of petroleum |
| 07/02/2008 | EP1937936A1 Wellbore completion design to naturally separate water and solids from oil and gas |
| 07/02/2008 | EP1378627B1 Method for developing a hydrocarbon reservoir (variants) and complex for carrying out said method (variants) |
| 07/02/2008 | CN201080928Y Hydraulic drive multitime open-close sliding bush normal and reverse circulation jet pump |
| 07/02/2008 | CN201080913Y Strong open-close multilevel elastic seal oil pump |
| 07/02/2008 | CN201080909Y Swelling and shrinkage mobile cartridge type plunger autoroatation centering oil pump |
| 07/02/2008 | CN201080908Y Long plunger elastic seal oil pump |
| 07/02/2008 | CN201080820Y Skid-mounted oilfield intelligent flow stabilizing water-dispensing valve set |
| 07/02/2008 | CN201080819Y Offshore platform natural gas ultra-high pressure reinjection system |
| 07/02/2008 | CN201080818Y Down-hole heat energy chemical reservoir perforating and fracturing device |
| 07/02/2008 | CN201080817Y Expanding and shrinking type reducing leading-in apparatus |
| 07/02/2008 | CN201080816Y Gravel filling tool capable of checking seal |
| 07/02/2008 | CN201080815Y Wind energy drive oil pumping machine |
| 07/02/2008 | CN201080814Y Beam type energy-saving oil pump |
| 07/02/2008 | CN201080813Y Beam type energy-saving oil pump |
| 07/02/2008 | CN201080812Y Energy-saving chain beam-pumping unit |
| 07/02/2008 | CN201080811Y Beam type energy-saving oil pump |
| 07/02/2008 | CN201080810Y Sheave wheel type single energy-saving double well oil pumping machine |
| 07/02/2008 | CN201080809Y Mobile type petroleum crude recovery device |
| 07/02/2008 | CN201080801Y Raising and hanging type eccentric water distributing apparatus plugging medicine dispensing apparatus |
| 07/02/2008 | CN101213426A Method and device for measuring the density of one component in a multi-component flow |
| 07/02/2008 | CN101210491A Gas pretreatment device with alarm mechanism |
| 07/02/2008 | CN101210487A Design method for increasing recovery efficiency technique |
| 07/02/2008 | CN101210486A Servo power flexible rope reciprocating elasticity-assist wheel type oil pumping device |
| 07/02/2008 | CN100398779C Hot air filling balance oil recovery technique 'guqian' mountain oil reservoir |
| 07/02/2008 | CN100398778C Method of fluid flowing in main cylinder via template guide cylinder, and template guide cylinder |