| 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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| 12/06/2001 | US20010047866 Wellbore casing |
| 12/06/2001 | US20010047865 Method of packing extended reach horizontal wells |
| 12/06/2001 | DE10027415A1 Offshore sea bed oil production comprises separation of water, gas and hydrocarbons which are difficult to exploit, sending only valuable light crude for onshore processing |
| 12/06/2001 | CA2408514A1 Use of helically wound tubular structure in the downhole environment |
| 12/05/2001 | EP1160417A2 Method and apparatus for improved fracpacking or gravel packing operations |
| 12/05/2001 | EP1159050A1 Three-phase separator |
| 12/05/2001 | CN2463565Y Lever pump switch valve with no need of well killing |
| 12/05/2001 | CN2463564Y Locking wrist pin for beam-pumping unit |
| 12/05/2001 | CN2463562Y Rotary suspended disk of beam-pumping unit |
| 12/05/2001 | CN2463561Y Full balance chain pulley driving vertical beam-pumping unit |
| 12/05/2001 | CN1325478A Wellbore system including a conduit an an expandable device |
| 12/05/2001 | CN1325477A Method for transporting and installing and expandable steel tubular |
| 12/05/2001 | CN1324979A Explosion treating method for oil layer in oil field |
| 12/04/2001 | US6326335 Mixture of gelatin, weighting agent and chelate compound |
| 12/04/2001 | US6325164 Device and method for creating bore-hole branches |
| 12/04/2001 | US6325160 Undersea drilling template release mechanism and method |
| 12/04/2001 | US6325159 Offshore drilling system |
| 12/04/2001 | US6325158 Method and device for mounting of a seabed installation |
| 12/04/2001 | US6325153 Multi-valve fluid flow control system and method |
| 12/04/2001 | US6325152 Method and apparatus for increasing fluid recovery from a subterranean formation |
| 12/04/2001 | US6325149 Reducing liquid spillage during hydrocarbon processing; pump liquid to preferential position in borehole, process liquid, recover hydrocarbon distillates |
| 12/04/2001 | US6325148 Tools and methods for use with expandable tubulars |
| 12/04/2001 | US6325147 Enhanced oil recovery process with combined injection of an aqueous phase and of at least partially water-miscible gas |
| 12/04/2001 | US6325146 Methods of downhole testing subterranean formations and associated apparatus therefor |
| 12/04/2001 | US6325143 Dual electric submergible pumping system installation to simultaneously move fluid with respect to two or more subterranean zones |
| 12/04/2001 | CA2196552C Method for removing alkaline sulfate scale |
| 12/01/2001 | CA2310544A1 Fluid displacement apparatus and method |
| 12/01/2001 | CA2310477A1 Well production apparatus and method |
| 11/29/2001 | WO2001090534A1 Method and devices for the in-situ elimination of hazardous substances from the groundwater and perched water |
| 11/29/2001 | WO2001090528A1 Method for controlled drilling and completing of wells |
| 11/29/2001 | WO2001073423A8 Apparatus and method for downhole well equipment and process management, identification, and actuation |
| 11/29/2001 | WO2001061146B1 Method and apparatus for stimulation of multiple formation intervals |
| 11/29/2001 | WO2001038687A3 Pipe connecting method |
| 11/29/2001 | US20010046414 Apparatus and method for in situ remediation |
| 11/29/2001 | US20010045538 Gate valve with flow-through gate |
| 11/29/2001 | US20010045291 Injecting gas into bed |
| 11/29/2001 | US20010045290 Method and apparatus for selective injection or flow control with through-tubing operation capacity |
| 11/29/2001 | US20010045289 Wellbore casing |
| 11/29/2001 | US20010045287 Gas lift method |
| 11/29/2001 | US20010045284 Apparatus and methods for expanding tubulars in a wellbore |
| 11/29/2001 | US20010045282 Combined notching and jetting methods and related apparatus |
| 11/29/2001 | US20010045281 Full bore set down tool assembly for gravel packing a well |
| 11/29/2001 | US20010045280 Field development system and associated methods |
| 11/29/2001 | DE10124936A1 Fuse used in perforating gun for perforating oil and gas boreholes comprises lines of explosive with surfaces lying longitudinally next to each other, and permeable wall separating surfaces |
| 11/28/2001 | EP1158137A2 Method and apparatus for establishing branch wells at a node of a parent well |
| 11/28/2001 | EP1157186A2 Explosion prevention system for internal turret mooring system |
| 11/28/2001 | CN2462107Y Crankshaft pin anti-droping device of beam-pumping unit |
| 11/28/2001 | CN2462073Y Steel reinforced concrete filtering pipe |
| 11/28/2001 | CN2462072Y Sleeving controllable mini porthole anti-sand tube of oil well |
| 11/27/2001 | US6322767 Process for making sodium carbonate decahydrate from sodium carbonate/bicarbonate liquors |
| 11/27/2001 | US6322616 Gas separator for an oil well production line |
| 11/27/2001 | US6322331 Tubular junction for tubing pump |
| 11/27/2001 | US6322109 Expandable tubing connector for expandable tubing |
| 11/27/2001 | US6321842 Flow control in a wellbore |
| 11/27/2001 | US6321840 Reservoir production method |
| 11/27/2001 | US6321837 Method and device for the in-situ elimination of hazardous substances from the groundwater and perched water |
| 11/27/2001 | CA2319674C Sand sleeve and method of use of the same |
| 11/27/2001 | CA2207770C Continuous flow downhole gas separator for progressing cavity pumps |
| 11/22/2001 | WO2001089068A2 Method for boosting the output voltage of a variable frequency drive |
| 11/22/2001 | WO2001088335A1 Dual purpose device |
| 11/22/2001 | WO2001088333A1 Method of oil/gas well stimulation |
| 11/22/2001 | WO2001088332A1 Thin-wall expandable well screen assembly and associated fabrication methods |
| 11/22/2001 | WO2001088320A1 Method and apparatus for hydrocarbon subterranean recovery |
| 11/22/2001 | WO2001087453A2 Separating a stream containing a multi-phase mixture of lighter and heavier density liquids and particles |
| 11/22/2001 | US20010042848 Cartridge gate valve |
| 11/22/2001 | US20010042625 Apparatus for facilitating the connection of tubulars using a top drive |
| 11/22/2001 | US20010042624 Controls bridge for flow completion systems |
| 11/22/2001 | US20010042620 Water well filter apparatus |
| 11/22/2001 | US20010042618 Internal gate valve for flow completion systems |
| 11/22/2001 | CA2415278A1 Method and apparatus for hydrocarbon subterranean recovery |
| 11/21/2001 | EP1155241A1 Gas displaced chamber lift system |
| 11/21/2001 | EP1155218A1 Selective zonal isolation within a slotted liner |
| 11/21/2001 | EP0918917B1 Method for casing a wellbore |
| 11/21/2001 | EP0859902B1 Deformable well screen and method for its installation |
| 11/21/2001 | CN2460747Y Device for promoting efficiency of oil-well pump |
| 11/21/2001 | CN2460725Y Ignition automatic device of perforator for oil-gas well |
| 11/21/2001 | CN2460724Y High-efficient perforator for oil-gas well |
| 11/21/2001 | CN1075154C Coilable oil well screen pipe |
| 11/20/2001 | US6318472 Hydraulic set liner hanger setting mechanism and method |
| 11/20/2001 | US6318469 Completion equipment having a plurality of fluid paths for use in a well |
| 11/20/2001 | US6318468 Recovery and reforming of crudes at the heads of multifunctional wells and oil mining system with flue gas stimulation |
| 11/20/2001 | US6318467 System and method for pumping and heating viscous fluids in a wellbore |
| 11/20/2001 | US6318465 Unconsolidated zonal isolation and control |
| 11/20/2001 | US6318464 Vapor extraction of hydrocarbon deposits |
| 11/20/2001 | US6318458 Water-well-head adaptor |
| 11/20/2001 | US6318457 Multilateral well and electrical transmission system |
| 11/20/2001 | US6318156 Multiphase flow measurement system |
| 11/20/2001 | CA2021275C Recovering a sulphur-containing fluid |
| 11/15/2001 | WO2001086831A1 Method for multi-phase data communications and control over an esp power cable |
| 11/15/2001 | WO2001086115A2 A method for treating a hydrocarbon containing formation |
| 11/15/2001 | WO2001086114A1 Liquid separation and extraction |
| 11/15/2001 | WO2001086111A1 Apparatus and methods for forming a lateral wellbore |
| 11/15/2001 | WO2001011189A3 Apparatus for optimizing production of multi-phase fluid |
| 11/15/2001 | US20010040054 Apparatus and methods for forming a lateral wellbore |
| 11/15/2001 | US20010040034 Conductor supported pulltube bundle |
| 11/15/2001 | US20010040033 Self-regulating lift fluid injection tool and method for use of same |
| 11/15/2001 | US20010040032 Surface pump assembly |
| 11/15/2001 | US20010040030 Downhole activation system |
| 11/15/2001 | US20010039711 Installing a scrolled resilient sheet alongside the inner surface of a fluid conduit |
| 11/15/2001 | CA2408593A1 Method for multi-phase data communications and control over an esp power cable |