| 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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| 02/03/2004 | US6684948 Apparatus and method for heating subterranean formations using fuel cells |
| 02/03/2004 | US6684947 Apparatus for radially expanding a tubular member |
| 02/03/2004 | US6684946 Gas-lock re-prime device for submersible pumps and related methods |
| 02/03/2004 | CA2433741C Desanding apparatus and system |
| 01/29/2004 | WO2004010039A2 Protective sleeve for threaded connections for expandable liner hanger |
| 01/29/2004 | WO2004009958A1 Apparatus and method for collecting underground hydrocarbon gas resources |
| 01/29/2004 | WO2004009956A1 Method of hydraulic fracture of subterranean formation |
| 01/29/2004 | WO2004009955A1 Method and apparatus for causing pressure variations in a wellbore |
| 01/29/2004 | WO2004009954A1 Method for completing injection wells |
| 01/29/2004 | WO2004009950A1 Dual well completion system |
| 01/29/2004 | WO2003100215A3 Mitigation of proppant sticking in removing downhole tools |
| 01/29/2004 | US20040017081 Coupling tubulars |
| 01/29/2004 | US20040016549 Method and apparatus for causing pressure variations in a wellbore |
| 01/29/2004 | US20040016546 Method and apparatus for transferring material in a wellbore |
| 01/29/2004 | US20040016545 Hanging liners by pipe expansion |
| 01/29/2004 | US20040016544 Downhole tubular patch, tubular expander and method |
| 01/29/2004 | US20040016541 Interpretation and design of hydraulic fracturing treatments |
| 01/29/2004 | US20040016539 Expandable screen with auxiliary conduit |
| 01/29/2004 | CA2849659A1 Method and apparatus for causing pressure variations in a wellbore |
| 01/29/2004 | CA2728820A1 Method and apparatus for causing pressure variations in a wellbore |
| 01/29/2004 | CA2493669A1 Dual well completion system |
| 01/29/2004 | CA2493086A1 Protective sleeve for threaded connections for expandable liner hanger |
| 01/28/2004 | EP1384851A2 Method and apparatus for installing casing in a well |
| 01/28/2004 | EP1383986A1 Well provided with flexible production tubing |
| 01/28/2004 | EP1383985A1 Wellhead product testing system |
| 01/28/2004 | CN2601324Y Anti-theft wick block of pumping unit decelerator |
| 01/28/2004 | CN2601303Y 抽油修井机 Pumping workover |
| 01/28/2004 | CN2601255Y Underground gasified gas desulfurizer for coal |
| 01/28/2004 | CN1470738A Polish oil-pipe well nitrogen heat-insualting wellhole heat-transfer simulating technique |
| 01/27/2004 | US6681862 System and method for reducing the pressure drop in fluids produced through production tubing |
| 01/27/2004 | US6681860 Downhole tool with port isolation |
| 01/27/2004 | US6681857 Decomposing in situ a pentaethylenehexamine-3co complex, thereby generating heat and carbon dioxide; enhanced oil recovery |
| 01/27/2004 | US6681855 Method and system for management of by-products from subterranean zones |
| 01/27/2004 | US6681854 Sand screen with communication line conduit |
| 01/27/2004 | US6681850 Flow completion system |
| 01/27/2004 | CA2116977C Process for recovering and causing highly viscous petroleum products to flow |
| 01/24/2004 | CA2435451A1 Method and apparatus for transferring material in a wellbore |
| 01/22/2004 | WO2004007908A1 Apparatus for separating water from oil |
| 01/22/2004 | WO2004007907A1 Undulating well bore |
| 01/22/2004 | WO2004007906A1 A subterranean drainage pattern and a method for drilling ramped wellbores |
| 01/22/2004 | WO2004007903A1 Method and apparatus for locking out a subsurface safety valve |
| 01/22/2004 | WO2004007894A2 Apparatus and method for accelerating hydration of particulate polymer |
| 01/22/2004 | WO2004007893A2 Improving collapse resistance of tubing |
| 01/22/2004 | WO2004007892A2 Expansion method |
| 01/22/2004 | WO2003000825A3 Sub-sea membrane separation system with temperature control |
| 01/22/2004 | US20040015023 Heat exchanging, controlling the heat, temperature and pressure, pyrolyzing; a heater is located in an open wellbore, also heat exchanger, insulation conductor |
| 01/22/2004 | US20040014608 Methods of preventing the flow-back of particulates deposited in subterranean formations |
| 01/22/2004 | US20040014606 Method For Completing Injection Wells |
| 01/22/2004 | US20040012200 Lower pull tube adapter |
| 01/22/2004 | US20040011745 For separation of hydrocarbonaceous oil and gas from water |
| 01/22/2004 | US20040011534 Apparatus and method for completing an interval of a wellbore while drilling |
| 01/22/2004 | US20040011522 Device for perfoming hydrodynamic action on wellbore walls |
| 01/21/2004 | EP1381921A1 Field/reservoir optimization utilizing neural networks |
| 01/21/2004 | EP1381754A1 Modeling of reservoir stimulation treatment |
| 01/21/2004 | EP1381753A1 Electrical well heating system and method |
| 01/21/2004 | EP1381752A1 In-situ combustion for oil recovery |
| 01/21/2004 | EP1381750A1 Drilling system with expandable sleeve |
| 01/21/2004 | EP1381749A2 Method for in situ recovery from a tar sands formation and a blending agent produced by such a method |
| 01/21/2004 | EP1102916B1 Apparatus and method for perforating and stimulating a subterranean formation |
| 01/21/2004 | CN2600630Y Vane-type oil-gas-water multi-phase blower pump |
| 01/21/2004 | CN2600620Y Screw pump driving device capable of annulus testing |
| 01/21/2004 | CN2600588Y Coal underground gasification stove |
| 01/21/2004 | CN2600587Y Non-beam linear electric motor beam-pumping unit |
| 01/21/2004 | CN2600586Y High-efficient low-consumption intelligent beam-pumping unit driven by low-speed large-torque abnormal-shape electric motor |
| 01/20/2004 | US6679335 Method for preparing casing for use in a wellbore |
| 01/20/2004 | US6679334 Use of helically wound tubular structure in the downhole environment |
| 01/20/2004 | US6679332 Petroleum well having downhole sensors, communication and power |
| 01/20/2004 | US6679327 Internal oriented perforating system and method |
| 01/20/2004 | US6679326 Synergistic confinement of the deposit by high pressure fluid barrier forming an enclosure |
| 01/20/2004 | US6679323 Severe dog leg swivel for tubing conveyed perforating |
| 01/20/2004 | US6679322 Method and system for accessing subterranean deposits from the surface |
| 01/20/2004 | CA2310959C Huff and puff process utilizing nitrogen gas |
| 01/15/2004 | WO2004005673A1 Sand transport system |
| 01/15/2004 | WO2004005670A1 Closed loop multiphase underbalanced drilling process |
| 01/15/2004 | WO2004005669A1 Corrugated downhole tubulars |
| 01/15/2004 | WO2004005665A2 Dovetail thread coupling for expandable tubulars |
| 01/15/2004 | WO2004005663A2 Tapered ramp positive lock latch mechanism |
| 01/15/2004 | WO2004005662A2 Method for upward growth of a hydraulic fracture along a well bore sandpacked annulus |
| 01/15/2004 | WO2004005661A2 System and mehtod for automating or metering fluid recovered at a well |
| 01/15/2004 | WO2004004863A1 Seperation of oil from sand |
| 01/15/2004 | WO2003078791A3 Method and apparatus for injecting steam into a geological formation |
| 01/15/2004 | WO2002086018A3 In situ recovery from a oil shale formation |
| 01/15/2004 | US20040008571 Apparatus and method for accelerating hydration of particulate polymer |
| 01/15/2004 | US20040007829 Downhole seal assembly and method for use of same |
| 01/15/2004 | US20040007392 Subsea mud pump and control system |
| 01/15/2004 | US20040007365 Method and apparatus for locking out a subsurface safety valve |
| 01/15/2004 | US20040007364 Tubing expansion |
| 01/15/2004 | US20040007363 Method of transferring fluids through a permeable well lining |
| 01/15/2004 | US20040007362 Tapered ramp positve lock latch mechanism |
| 01/15/2004 | US20040007354 System for running tubular members |
| 01/15/2004 | US20040007353 Well pump device |
| 01/15/2004 | US20040007352 Ramping well bores |
| 01/15/2004 | US20040007351 Undulating well bore |
| 01/15/2004 | US20040007131 Closed loop multiphase underbalanced drilling process |
| 01/15/2004 | US20040007059 Method for measuring particle concentration during injection pumping operations |
| 01/15/2004 | CA2759774A1 Methods for expanding threaded tubulars |
| 01/14/2004 | EP1379804A1 Threaded connection |
| 01/14/2004 | EP1379756A1 Method for pumping fluids |
| 01/14/2004 | EP1235973B1 Wellbore system having non-return valve |
| 01/14/2004 | CN2599279Y Rodless automatic oil well pump for deep well |