| 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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| 07/06/2011 | CN101120154B Arrangement related to a separator for the cleaning of such separator |
| 07/05/2011 | US7972997 Process for coating gravel pack sand with polymeric breaker |
| 07/05/2011 | US7972555 Method for fabricating compressible objects for a variable density drilling mud |
| 07/05/2011 | US7971650 Electric submersible pumps |
| 07/05/2011 | US7971649 Flow control system having an isolation device for preventing gas interference during downhole liquid removal operations |
| 07/05/2011 | US7971648 Flow control system utilizing an isolation device positioned uphole of a liquid removal device |
| 07/05/2011 | US7971647 Apparatus and method for raising a fluid in a well |
| 07/05/2011 | US7971646 Multi-position valve for fracturing and sand control and associated completion methods |
| 07/05/2011 | US7971644 Fluid loss additive and breaking agent |
| 07/05/2011 | US7971643 Methods and compositions of a storable relatively lightweight proppant slurry for hydraulic fracturing and gravel packing applications |
| 07/05/2011 | US7971642 Gravel packing methods |
| 07/05/2011 | CA2655348C Methods for allowing multiple fractures to be formed in a subterranean formation from an open hole well |
| 07/05/2011 | CA2635663C Method, system and apparatus for concentrating solids from drilling slurry |
| 07/05/2011 | CA2617044C Axial indexing well tool |
| 07/05/2011 | CA2599553C Method and apparatus to enhance hydrocarbon production from wells |
| 07/05/2011 | CA2522822C Composition and method for treating a subterranean formation |
| 07/05/2011 | CA2443583C Controlled pressure drop filter |
| 07/05/2011 | CA2384108C Quaternary ammonium salts as thickening agents for aqueous systems |
| 07/04/2011 | CA2701485A1 Process and apparatus to improve reliability of pinpoint stimulation operations |
| 06/30/2011 | WO2011079319A2 Subsea technique for promoting fluid flow |
| 06/30/2011 | WO2011079008A1 Hydrogen bonding material for oilfield application |
| 06/30/2011 | WO2011078690A1 Method for water tightening of water bearing zones and stabilization of sand in underground constructions |
| 06/30/2011 | WO2011077337A2 Chemical diversion technique |
| 06/30/2011 | WO2011077183A1 Method of making proppants used in gas or oil extraction |
| 06/30/2011 | WO2011076935A1 Downhole tool for borehole cleaning or for moving fluid in a borehole |
| 06/30/2011 | WO2011075835A1 A multi-step solvent extraction process for heavy oil reservoirs |
| 06/30/2011 | WO2011049678A3 Dissolvable material application in perforating |
| 06/30/2011 | WO2011043872A3 Multi-point chemical injection system for intelligent completion |
| 06/30/2011 | WO2011037925A3 Method for controlling fluid production from a wellbore by using a script |
| 06/30/2011 | WO2011027100A3 Improved methods of fluid placement and diversion in subterranean formations |
| 06/30/2011 | WO2011024100A3 Methods to reduce settling rate of solids in a treatment fluid |
| 06/30/2011 | WO2011024099A3 Methods to control fluid loss in a well bore |
| 06/30/2011 | WO2011023934A3 Sonically activating settable compositions and methods of activating them |
| 06/30/2011 | WO2011018688A3 Manipulation of flow underground |
| 06/30/2011 | WO2011017193A4 Downhold screen with valve feature |
| 06/30/2011 | WO2010136806A3 An active external casing packer (ecp) for frac operations in oil and gas wells |
| 06/30/2011 | US20110158826 Feed device for a precursor |
| 06/30/2011 | US20110155390 Apparatus and method for pumping a fluid and an additive from a downhole location into a formation or to another location |
| 06/30/2011 | US20110155389 System and Method For Providing A Physical Property Model |
| 06/30/2011 | US20110155385 Method and system for subsea processing of multiphase well effluents |
| 06/30/2011 | US20110155384 Subsea fluid separator |
| 06/30/2011 | US20110155382 Internal Tieback for Subsea Well |
| 06/30/2011 | US20110155378 Foam optimization method for deliquifying wells |
| 06/30/2011 | US20110155377 Joint or coupling device incorporating a mechanically-induced weak point and method of use |
| 06/30/2011 | US20110155376 Delivering water-soluble polysaccharides for well treatments |
| 06/30/2011 | US20110155375 System and method of dynamic underbalanced perforating using an isolation fluid |
| 06/30/2011 | US20110155372 High solids content slurry methods |
| 06/30/2011 | US20110155371 High solids content slurries and methods |
| 06/30/2011 | US20110155370 Dual completion string gravel pack system and method |
| 06/30/2011 | US20110155013 Electromagnetic formed shaped charge liners |
| 06/30/2011 | CA2785588A1 Downhole tool for borehole cleaning or for moving fluid in a borehole |
| 06/30/2011 | CA2785090A1 Chemical diversion technique |
| 06/29/2011 | EP2339113A2 Gas lift method with fine lifting stream |
| 06/29/2011 | EP2339112A1 Inflow control in a production casing |
| 06/29/2011 | EP2339111A2 Downhole apparatus and method |
| 06/29/2011 | EP2339110A1 Downhole tool for borehole cleaning or for moving fluid in a borehole |
| 06/29/2011 | EP2337927A2 Invert emulsion wellbore fluids and method for reducing toxicity thereof |
| 06/29/2011 | EP2337926A1 Shunt tube flowpaths extending through swellable packers |
| 06/29/2011 | EP2337925A2 Method for optimizing well production in reservoirs having flow barriers |
| 06/29/2011 | EP2337924A1 Downhole tool of high pressure operating cycle capability |
| 06/29/2011 | EP2337870A1 Corrosion resistant oil field tubulars and method of fabrication |
| 06/29/2011 | EP1671013B1 Improvements in and relating to oil well perforators |
| 06/29/2011 | CN201885209U Steam injection boiler heat insulating structure |
| 06/29/2011 | CN201884019U Jet composite perforation and fracturing string |
| 06/29/2011 | CN201884018U Steam injection string for heavy oil wells |
| 06/29/2011 | CN201884017U Water flow adjusting device adopting dual-non-collecting lamination single measuring technology |
| 06/29/2011 | CN201884016U High-strength triple-proof bridge water distributor |
| 06/29/2011 | CN201884015U Liquid drainage and gas production system for gas wells |
| 06/29/2011 | CN201884014U Pressing crack acidification perforator |
| 06/29/2011 | CN201884013U Adjustable bracket for bailing pumping units and other non-beam pumping units |
| 06/29/2011 | CN201884012U Adjusting tool for pumping unit counterweights |
| 06/29/2011 | CN201884011U Automatic stoppage device for sucker rod blockage |
| 06/29/2011 | CN201884010U Adjustable wellhead drum for non-beam double-well pumping units |
| 06/29/2011 | CN201884009U Tower type electrically-driven non-beam pumping unit for assisting wind power generation |
| 06/29/2011 | CN201884008U Screw type anti-collision distance regulator |
| 06/29/2011 | CN201884007U Power device of radius-adjusting torque-changing beam pumping unit |
| 06/29/2011 | CN201884006U Balancing weight device of beam-pumping unit |
| 06/29/2011 | CN201884005U Sucker rod string accelerator |
| 06/29/2011 | CN201884004U Manual brake system for steel sling traction type pumping unit |
| 06/29/2011 | CN201883994U Self-pressure-retaining expansion open hole packer |
| 06/29/2011 | CN201883955U Novel prestressed heat-insulating tubing |
| 06/29/2011 | CN201880468U Membrane separation and compression system utilizing complementary drive of natural power and electricity |
| 06/29/2011 | CN102112699A Traveling undercut solution mining systems and methods |
| 06/29/2011 | CN102108860A Visualized fracture network oil displacement model and manufacturing method thereof |
| 06/29/2011 | CN102108859A Method and device for separate layer pressure and fluid production section testing and negative pressure de-plugging for oilfield |
| 06/29/2011 | CN102108853A Salt mine double-well solution mining method |
| 06/29/2011 | CN102108852A Multi-fractures modification method for dense sandstone reservoir |
| 06/29/2011 | CN102108851A Horizontal well steam injection method and system |
| 06/29/2011 | CN102108850A Radial-inserting and radial-throttling type throttler and balance sieve tube employing same |
| 06/29/2011 | CN102108849A Radial rotation and axial flow-limit type throttler and balance screen pipe comprising same |
| 06/29/2011 | CN102108848A Composite filter sieve tube |
| 06/29/2011 | CN102108847A Dual well balance type hydraulic pumping unit and working method thereof |
| 06/29/2011 | CN101550807B Complex function unit sucker rod string |
| 06/29/2011 | CN101265803B Horizontal and uniform acid distribution integrated experimental device and its operation method |
| 06/29/2011 | CN101067372B High-pressure mixed gas generator used for petroleum thermal recovery gas injection machine |
| 06/28/2011 | US7967991 Cyclonic flow separator |
| 06/28/2011 | US7967955 Water treatment method for heavy oil production |
| 06/28/2011 | US7967069 Active seismic monitoring of fracturing operations |
| 06/28/2011 | US7967068 Particles in oil for viscoelastic surfactant gelled fluids |
| 06/28/2011 | US7967064 Apparatus for radially expanding and plastically deforming a tubular member |