| 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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| 04/12/2007 | CA2624445A1 Methods for enhancing aqueous fluid recovery from subterranean formations |
| 04/12/2007 | CA2620734A1 Method of producing a hydrocarbon stream from a subterranean zone |
| 04/11/2007 | EP1772590A1 Method and system for removing fluid from a subterranean zone using an enlarged cavity |
| 04/11/2007 | EP1772589A1 A drilling method for maintaining productivity while eliminating perforating and gravel packing |
| 04/11/2007 | EP1552107B1 Fracture stimulation process for carbonate reservoirs |
| 04/11/2007 | EP1255911B1 A device for and method of separating gas and liquid in a wellstream |
| 04/11/2007 | CN2888133Y Oil increasing device |
| 04/11/2007 | CN2888131Y Long-distance hydraulic driven down-hole pumping unit |
| 04/11/2007 | CN2888130Y Pumping unit with long-distance hydraulic reciprocating pump |
| 04/11/2007 | CN2888129Y Single-crank low-stroke-frequency energy-saving beam pumping unit |
| 04/11/2007 | CN2888128Y Dual-acting oil well pump |
| 04/11/2007 | CN2888067Y Pumping unit |
| 04/11/2007 | CN2888066Y Hang-weight belt windshield wiper of belt type pumping machine |
| 04/11/2007 | CN2888064Y Production-aiding electric-heating furnace for oil production well mouth |
| 04/11/2007 | CN1946920A Method and apparatus for downhole fluid analysis for reservoir fluid characterization |
| 04/11/2007 | CN1946919A Reducing viscosity of oil for production from a hydrocarbon containing formation |
| 04/11/2007 | CN1946918A Inhibiting effects of sloughing in wellbores |
| 04/11/2007 | CN1946917A Inhibiting reflux in a heated well of an in situ conversion system |
| 04/11/2007 | CN1945114A Process for using hot coal gas as viscous crude thermal recovery and gas injection boiler fuel |
| 04/11/2007 | CN1945016A Crankshaft type oil pumping machine |
| 04/11/2007 | CN1944952A Polymer flooding method for secondary oil layer |
| 04/11/2007 | CN1944951A Atmospheric cap injection polymer barrier developing buffer zone method for layered sandstone gas cap oil field |
| 04/11/2007 | CN1944950A Method for recovering sea bottom hydrate by underwell gas and water separation and back injection |
| 04/11/2007 | CN1944949A Method for recovering sea bottom hydrate by single well heat injection circulation |
| 04/11/2007 | CN1944948A Stroke increased oil pumping machine |
| 04/11/2007 | CN1944947A Intelligent long stroke oil pumping machine |
| 04/11/2007 | CN1944573A Zeolite profile control agent and method for injecting zeolite profile control agent into profile control well |
| 04/11/2007 | CN1309935C Tubular system located in shaft |
| 04/11/2007 | CN1309934C Expandable wellbore stabiliser |
| 04/11/2007 | CN1309933C Creating zonal isolation between interior and exterior of underground well system |
| 04/11/2007 | CN1309932C Adjustable well screen assembly and exploiting well of hydrocarbon liquid |
| 04/11/2007 | CN1309931C Intelligent hydraulic oil pumping equipments |
| 04/11/2007 | CN1309929C Centraliser for an expandable tubular element in a wellbore |
| 04/10/2007 | US7201232 Washpipeless isolation strings and methods for isolation with object holding service tool |
| 04/10/2007 | US7201231 Apparatuses and methods for deploying logging tools and signalling in boreholes |
| 04/10/2007 | US7201229 Tree mounted well flow interface device |
| 04/10/2007 | US7201228 Placing a treatment fluid comprising a liquid component and a solid component into a subterranean formation at a pressure sufficient to create or enhance at least one fracture therein for fracturing a subterranean formation |
| 04/10/2007 | US7201227 Providing a fluid comprising an aqueous liquid, carbon dioxide, and one or more splittable foamers, introducing the fluid into a well bore; andcontacting the fluid and the subterranean formation for a sufficient time to permit the fluid to form a foam |
| 04/10/2007 | US7201225 Conserving components of fluids |
| 04/10/2007 | US7201224 Dynamic reduction of the moisture layer during the displacement of a viscoelastic fluid using a fluid with lower viscosity |
| 04/10/2007 | US7201223 Method and apparatus for forming a mono-diameter wellbore casing |
| 04/10/2007 | US7201222 Method and apparatus for aligning rotor in stator of a rod driven well pump |
| 04/10/2007 | US7201221 Wellbores utilizing fiber optic-based sensors and operating devices |
| 04/10/2007 | CA2536468C Expandable connector for borehole tubes |
| 04/10/2007 | CA2485035C Gas recovery apparatus, method and cycle having a three chamber evacuation phase and two liquid extraction phases for improved natural gas production |
| 04/10/2007 | CA2425843C Gas separating intake for progressing cavity pumps |
| 04/10/2007 | CA2363811C Downhole drilling assembly with independent jet pump |
| 04/10/2007 | CA2349391C Wellbore flow control device |
| 04/05/2007 | WO2007037684A1 Method and electromagnetic device for causing a fluid flow through a subterranean permeable formation, and borehole provided with such a device |
| 04/05/2007 | WO2007001935A3 Enhanced floating power generation system |
| 04/05/2007 | WO2006130652A3 Cavity well system |
| 04/05/2007 | US20070078063 drilling a well bore in a subterranean formation using a subterranean treatment fluid: an aqueous fluid, a viscosifier, a fluid loss control additive, a degradable polymeric bridging agent, and a solvent; partial plasticizing the degradable polymer, allowing fluid to form a self-degradable filter-cake |
| 04/05/2007 | US20070078060 Invert drilling fluids and methods of drilling boreholes |
| 04/05/2007 | US20070075447 Bubble breaker assembly |
| 04/05/2007 | US20070074909 Hydraulic timing device |
| 04/05/2007 | US20070074876 Apparatus for facilitating the connection of tubulars using a top drive |
| 04/05/2007 | US20070074872 Apparatus, Pumping System Incorporating Same, and Methods of Protecting Pump Components |
| 04/05/2007 | US20070074871 Non-tubing deployed well artificial lift system |
| 04/05/2007 | US20070074868 Wear resistant tubular connection |
| 04/04/2007 | EP1770242A1 Method and electromagnetic device for causing a fluid flow through a subterranean permeable formation, and borehole provided with such a device |
| 04/04/2007 | EP1769134A1 Scale inhibition method |
| 04/04/2007 | EP1618280B1 Expander system for stepwise expansion of a tubular element |
| 04/04/2007 | EP1399644B1 Method for preparing wellbore casing for installation |
| 04/04/2007 | CN2886223Y Crank moveable pulley for single-crank multiple-stroke flexible type pumping unit |
| 04/04/2007 | CN2886129Y Self-complementing type flexible sealing float-spacer sand-prevention pump |
| 04/04/2007 | CN2886127Y Sand-block-proof solid plunger rod type oil well pump |
| 04/04/2007 | CN2886077Y Quantitative steam injection pipe column for use in oil well lamination |
| 04/04/2007 | CN2886076Y Device for directly dispersing polymer dry powder by using hydraulic jet |
| 04/04/2007 | CN2886075Y Bearing hollow water distributor |
| 04/04/2007 | CN2886074Y Concentric separated-injection control switch |
| 04/04/2007 | CN2886073Y Spiral cylinder type trapezoidal-hole sand-screening pipe |
| 04/04/2007 | CN2886072Y Low-frequency- stroke pumping machine |
| 04/04/2007 | CN2886071Y Single crank double-stoke flexible type pumping unit |
| 04/04/2007 | CN2886070Y Heat-transmission structure containing man fire tube and secondary fire tube |
| 04/04/2007 | CN2886069Y Heat transmission structure for internal and external cylinder with bent water pipe |
| 04/04/2007 | CN2886066Y Sealing device for hollow water distributor |
| 04/04/2007 | CN1942653A Bubble breaker assembly |
| 04/04/2007 | CN1942550A 粘弹性酸 Viscoelastic acid |
| 04/04/2007 | CN1308580C Gas turbine system comprising closed system of fuel and combustion gas using underground coal layer |
| 04/04/2007 | CN1308569C Method of proceeding modulation design of oil field chemical oil driving equipment |
| 04/04/2007 | CN1308568C Thin-wall expandable well screen assembly and associated fabrication methods |
| 04/04/2007 | CN1308413C Oil well acidizing fluid containing organic phosphinic acid |
| 04/04/2007 | CA2562568A1 Non-tubing deployed well artificial lift system |
| 04/03/2007 | US7199497 Frameless switched reluctance motor and application as a top drive for a rotary pump |
| 04/03/2007 | US7198109 Double-pin radial flow valve |
| 04/03/2007 | US7198107 In-situ method of producing oil shale and gas (methane) hydrates, on-shore and off-shore |
| 04/03/2007 | US7198106 Method for enhancing gas well secondary recovery operations |
| 04/03/2007 | US7198102 Automatic downlink system |
| 04/03/2007 | US7198100 Apparatus for expanding a tubular member |
| 04/03/2007 | US7198099 Method and system for injecting a treatment fluid into a well |
| 04/03/2007 | US7197985 High-pressure explosive retention device |
| 04/03/2007 | CA2308180C Expandable downhole tubing |
| 03/30/2007 | CA2521825A1 Charge tube end plate |
| 03/29/2007 | WO2007035745A2 Well treatment device, method, and system |
| 03/29/2007 | WO2007035128A1 Well jet device and the operating method thereof |
| 03/29/2007 | WO2007035107A1 Method and device for dosing of chemicals into injection water |
| 03/29/2007 | WO2007035106A1 Method and device for separation of particles from injection water |
| 03/29/2007 | WO2007035075A1 Method for producing hydrocarboneous feedstock and an arrangement for carrying out said method |
| 03/29/2007 | WO2007034142A1 Device for controlling slugging |
| 03/29/2007 | WO2007034136A2 Sub-surface deployment valve |