| 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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| 04/13/2004 | CA2163711C Pumping system and method including a displacement pump and application of said system and method to bypassed wells |
| 04/08/2004 | WO2004029410A1 Multilateral injection/production/storage completion method |
| 04/08/2004 | WO2004029409A1 Surface controlled subsurface lateral branch safety valve |
| 04/08/2004 | WO2004029404A1 System to reduce hydrostatic pressure in risers using buoyant spheres |
| 04/08/2004 | WO2004028656A2 System and method for material removal |
| 04/08/2004 | WO2004013457A3 Electric power control for sickline operations in wellbores |
| 04/08/2004 | WO2003102351A3 Oil and gas production with downhole separation and reinjection of gas |
| 04/08/2004 | WO2003023179A3 System for lining a wellbore casing |
| 04/08/2004 | US20040065447 Completion apparatus and methods for use in wellbores |
| 04/08/2004 | US20040065446 Expander tool for downhole use |
| 04/08/2004 | US20040065445 Expanding tubing |
| 04/08/2004 | US20040065441 Open well plunger-actuated gas lift valve and method of use |
| 04/08/2004 | US20040065439 Wellbores utilizing fiber optic-based sensors and operating devices |
| 04/08/2004 | US20040065438 Borehole conductivity profiler |
| 04/07/2004 | EP1404945A1 Expandable wellbore stabiliser |
| 04/07/2004 | EP1404944A2 Fluid transportation system |
| 04/07/2004 | EP1404776A2 Polymer solutions with shear reversible properties |
| 04/07/2004 | EP1062404A4 Expendable tubing-conveyed perforator |
| 04/07/2004 | EP1056926B1 Improvements in or relating to reducing water flow |
| 04/07/2004 | EP0885346B1 Method and well tool for gravel packing a well using low-viscosity fluids |
| 04/07/2004 | EP0851843B1 Subsurface remediation method and apparatus |
| 04/07/2004 | CN2610175Y Floral whorl oil baffle of reducer casing of beam-pumping unit |
| 04/07/2004 | CN2610117Y Antiscale oil-well pump |
| 04/07/2004 | CN2610116Y Sand-proof oil-well pump |
| 04/07/2004 | CN2610086Y Oil-gas-water three-phase separation device |
| 04/07/2004 | CN2610085Y Repeated adjustable oil product device for oil production well |
| 04/07/2004 | CN2610084Y Failure monitor for mechanical oil production well |
| 04/07/2004 | CN2610083Y Laser slotting anti-sand screen tube |
| 04/07/2004 | CN2610082Y Compound die cavity slotting screen pipe |
| 04/07/2004 | CN2610081Y Sand discharge oil-producing device |
| 04/07/2004 | CN2610080Y Balance low driving pumping unit |
| 04/07/2004 | CN2610079Y Intelligent indicating alarm device for oil field joint operation machine |
| 04/07/2004 | CN2610076Y Environmental protection testing blow-out proventer |
| 04/07/2004 | CN1487171A Polymer displaced steam injecting hot oil deposit exploiting method |
| 04/07/2004 | CN1487170A Water displaced steam injecting hot masout exploiting method |
| 04/07/2004 | CN1487169A Eccentric reducing pipe and its production process |
| 04/07/2004 | CN1144933C Equipment and method for sampling from earth formation through cased borehole |
| 04/07/2004 | CN1144932C Method for increasing mining ratio of methane from subterranean carbonaceous formation |
| 04/06/2004 | US6716268 Slugging control |
| 04/06/2004 | US6715556 Gas restrictor for horizontally oriented well pump |
| 04/06/2004 | US6715550 Controllable gas-lift well and valve |
| 04/06/2004 | US6715549 In situ thermal processing of a hydrocarbon containing formation with a selected atomic oxygen to carbon ratio |
| 04/06/2004 | US6715548 Electrical heaters may be used to heat the subterranean formation by radiation and/or conduction |
| 04/06/2004 | US6715547 In situ thermal processing of a hydrocarbon containing formation to form a substantially uniform, high permeability formation |
| 04/06/2004 | US6715546 Chemical and/or physical properties of hydrocarbon material within a subterranean formation may need to be changed to allow hydrocarbon material to be more easily removed |
| 04/06/2004 | US6715545 Transition member for maintaining for fluid slurry velocity therethrough and method for use of same |
| 04/06/2004 | US6715544 Well screen |
| 04/06/2004 | CA2233093C Assembly and process for drilling and completing multiple wells |
| 04/03/2004 | CA2437939A1 Hybrid tension-leg riser |
| 04/01/2004 | WO2004027786A2 Protective sleeve for expandable tubulars |
| 04/01/2004 | WO2004027213A1 Acid-coated sand for gravel pack and filter cake clean-up |
| 04/01/2004 | WO2004027211A1 Electric motors for powering downhole tools |
| 04/01/2004 | WO2004027210A1 Method for hydromechanical perforation of a casing string |
| 04/01/2004 | WO2004027209A1 Method and apparatus for forming an annular barrier in a wellbore |
| 04/01/2004 | WO2004027205A2 Mono diameter wellbore casing |
| 04/01/2004 | WO2004027201A2 Annular isolators for expandable tubulars in wellbores |
| 04/01/2004 | WO2004027200A2 Bottom plug for forming a mono diameter wellbore casing |
| 04/01/2004 | WO2004027198A2 Remote intervention logic valving method and apparatus |
| 04/01/2004 | WO2004026500A2 Self-lubricating expansion mandrel for expandable tubular |
| 04/01/2004 | WO2004026073A2 Rotating mandrel for expandable tubular casing |
| 04/01/2004 | WO2004026017A2 Residual stresses in expandable tubular casing |
| 04/01/2004 | WO2004007893A3 Improving collapse resistance of tubing |
| 04/01/2004 | US20040060735 Impulse generator and method for perforating a cased wellbore |
| 04/01/2004 | US20040060734 Oil well perforator |
| 04/01/2004 | US20040060709 Apparatus and methods for installing casing in a borehole |
| 04/01/2004 | US20040060707 Protection scheme for deployment of artificial lift devices in a wellbore |
| 04/01/2004 | US20040060706 Expandable connection for use with a swelling elastomer |
| 04/01/2004 | US20040060705 Method and apparatus for increasing fluid recovery from a subterranean formation |
| 04/01/2004 | US20040060703 Controlled downhole chemical injection |
| 04/01/2004 | US20040060695 Expandable well screen |
| 04/01/2004 | US20040060351 Process for predicting porosity and permeability of a coal bed |
| 04/01/2004 | CA2499251A1 Electric motors for powering downhole tools |
| 04/01/2004 | CA2499071A1 Self-lubricating expansion mandrel for expandable tubular |
| 04/01/2004 | CA2499030A1 Mono diameter wellbore casing |
| 03/31/2004 | EP1403466A2 Consolidating proppant and controlling fines in wells |
| 03/31/2004 | EP1403465A1 Formation fracturing real-time monitoring |
| 03/31/2004 | EP1403464A2 Expandable tubular connection |
| 03/31/2004 | EP1402154A2 Hydrate reducing and lubrication system and method for a fluid flow system |
| 03/31/2004 | EP1402149A1 Method and apparatus for gravel packing a well |
| 03/31/2004 | EP1179115B1 In-tubing wellbore sidetracking operations |
| 03/31/2004 | CN2608721Y Piston for mud pump |
| 03/31/2004 | CN2608686Y Single layer testing small diameter water distribution apparatus |
| 03/31/2004 | CN2608685Y Single layer testing water distribution apparatus |
| 03/31/2004 | CN2608684Y New type oil pumping driving device |
| 03/31/2004 | CN2608683Y Electric submerged oil screw oil pumping machine |
| 03/31/2004 | CN2608679Y Expansion type packer |
| 03/31/2004 | CN2608094Y Emulsion microwave oil water and sand centrifugal separation device |
| 03/31/2004 | CN1485568A Slab waveguide and method of manufacturing the slab waveguide |
| 03/31/2004 | CN1485428A Particle carrier carrying microbe and method of oil extraction, block removing and environmental protection degreasing using the carrier |
| 03/31/2004 | CN1143944C Negative-pressure equipment of multi-stage perforator for oil tube delivery |
| 03/31/2004 | CN1143718C Improved helical separator |
| 03/30/2004 | US6714018 Method of commissioning and operating an electrically heated pipe-in-pipe subsea pipeline |
| 03/30/2004 | US6712401 Tubular threaded joint capable of being subjected to diametral expansion |
| 03/30/2004 | US6712154 Isolation of subterranean zones |
| 03/30/2004 | US6712152 Downhole plug holder and method |
| 03/30/2004 | US6712151 Tubing expansion |
| 03/30/2004 | US6712148 Junction isolation apparatus and methods for use in multilateral well treatment operations |
| 03/30/2004 | US6712142 Apparatus and methods for expanding tubulars in a wellbore |
| 03/30/2004 | US6712137 Heat exchanging to superimpose heat |
| 03/30/2004 | US6712136 Providing heat to the formation; controlling the heat from the heat source such that an average temperature within at least a majority of the selected section of the formation is less than about 375 degrees c. |