| 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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| 06/15/2011 | CN201865641U Long-stroke energy-saving double-well oil sucking machine with driver arranged at upper part |
| 06/15/2011 | CN201865640U Underslung-driving long-stroke energy-saving dual-well pumping unit |
| 06/15/2011 | CN201865639U Dual-pumping unit travel control device |
| 06/15/2011 | CN201865638U Horsehead moving-way device of pumping unit |
| 06/15/2011 | CN201865637U Walking beam type pumping unit with function of automatic adjustment |
| 06/15/2011 | CN201865636U Device preventing balance block of walking beam type pumping unit from falling off |
| 06/15/2011 | CN201865635U Counterweight box of vertical oil pumping unit |
| 06/15/2011 | CN201865634U Hydraulic DC (direct current) oil exploitation device |
| 06/15/2011 | CN201865597U Laminated fracturing protection device for continuous oil pipe |
| 06/15/2011 | CN1989313B Alkylxylene sulfonates for enhanced oil recovery processes |
| 06/15/2011 | CN102099545A Method of manufacture and the use of a functional proppant for determination of subterranean fracture geometries |
| 06/15/2011 | CN102099544A Systems and methods for producing oil and/or gas |
| 06/15/2011 | CN102099543A Arrangement for directing a fluid flow |
| 06/15/2011 | CN102094642A Intraformationally heterogeneous model oil-water displacement efficiency evaluation system |
| 06/15/2011 | CN102094641A Fracturing filling sand prevention model |
| 06/15/2011 | CN102094626A Real-time fault early warning method and system of oil well |
| 06/15/2011 | CN102094617A Pitch-variable spiral gas anchor |
| 06/15/2011 | CN102094616A Method for separating flocculent organic matters from polymer-containing oil sludge |
| 06/15/2011 | CN102094615A Method for completing coalbed methane horizontal well by using thermal sieve tube |
| 06/15/2011 | CN102094614A Foam acid de-plugging technology |
| 06/15/2011 | CN102094613A Composite perforating method and device carrying support agent |
| 06/15/2011 | CN102094612A Active water fracturing technology of coal-bed gas well |
| 06/15/2011 | CN102094611A Coal mine under-well fracturing complete equipment |
| 06/15/2011 | CN102094610A Experiment simulation system for exploiting natural gas hydrate by using CO2 |
| 06/15/2011 | CN102094609A Controllable constant-pressure medicament feeding device |
| 06/15/2011 | CN102094608A Automatic water power pressure adjustment system |
| 06/15/2011 | CN102094607A Equipment and method for injecting water into high and low pressure wells |
| 06/15/2011 | CN102094606A Technology for eliminating freeze blockage of CO2 pressing and injection flow |
| 06/15/2011 | CN102094605A Special nitrogen for replacement of oil-gas field |
| 06/15/2011 | CN102094604A Composite perforation device and perforation method for underground oil/gas electro-hydraulic fracturing |
| 06/15/2011 | CN102094603A Well completion process for filling gravels into horizontal well pipe |
| 06/15/2011 | CN102094602A Well completion process for filling gravels into petroleum and natural gas horizontal well pipe |
| 06/15/2011 | CN102094601A Novel oil pumping unit for cluster well |
| 06/15/2011 | CN102094600A Hydraulic pumping device with energy recovery function |
| 06/15/2011 | CN102094599A Stroke-increasing pumping unit for cluster well |
| 06/15/2011 | CN102094598A Filled crank balancing block of oil pumping unit |
| 06/15/2011 | CN102094597A Automatic balance adjustment device for pumping unit by utilizing liquid counterweight rider |
| 06/15/2011 | CN102094595A Fully-enclosed device of upper part of injecting layer for downhole operation of high-pressure water injection well |
| 06/15/2011 | CN102094594A Device for totally sealing upper part of oil layer during underground operation of steam-driven well |
| 06/15/2011 | CN102094590A Soft seal isolation technology for protecting oil jackets |
| 06/15/2011 | CN102093877A Technology for introducing coated sand into fracturing modification |
| 06/15/2011 | CN102093876A Hyposmosis thixotropic gel temporary plugging agent for acidifying oil layer of oil field and preparation and application thereof |
| 06/15/2011 | CN102093868A Novel microbial wax removal and control system and application thereof |
| 06/15/2011 | CN101324176B Spring self-switching type Y-shaped joint |
| 06/15/2011 | CN101260801B Well drilling hot melt separate zone production technology for oil-containing low infiltration native sulphur deposit |
| 06/15/2011 | CN101250999B Terra-imitating borehole and manufacture method thereof |
| 06/14/2011 | US7960829 Support structure for use in thinning semiconductor substrates and for supporting thinned semiconductor substrates |
| 06/14/2011 | US7960314 Microemulsifiers and methods of making and using same |
| 06/14/2011 | US7958939 Composition and method for producing a pumpable hydrocarbon hydrate slurry at high water-cut |
| 06/14/2011 | US7958938 System and vessel for supporting offshore fields |
| 06/14/2011 | US7958937 Process for hydrofracturing an underground aquifer from a water well borehole for increasing water flow production from Denver Basin aquifers |
| 06/14/2011 | CA2640421C Process for removing silica in heavy oil recovery |
| 06/14/2011 | CA2510351C Polyether polyesters having anionic functionality |
| 06/14/2011 | CA2503394C Temperature limited heaters for heating subsurface formations or wellbores |
| 06/14/2011 | CA2423769C Natural gas booster compressor system |
| 06/09/2011 | WO2011068848A2 Method for monitoring hydrocarbon production |
| 06/09/2011 | WO2011068692A2 Surface separation system for separating fluids |
| 06/09/2011 | WO2011068690A2 Gas lift valve |
| 06/09/2011 | WO2011068615A1 Technique of fracturing with selective stream injection |
| 06/09/2011 | WO2011067372A1 Downhole artificial lifting system |
| 06/09/2011 | WO2011067371A1 Inflow control in a production casing |
| 06/09/2011 | WO2011067347A1 An apparatus for sealing off a part of a wall in a section drilled into an earth formation, and a method for applying the apparatus |
| 06/09/2011 | WO2011066654A1 Method of hydraulically fracturing a formation |
| 06/09/2011 | WO2011049929A3 High performance guar for hydraulic fracturing and other applications |
| 06/09/2011 | WO2011019645A3 Permanent magnet linear motor actuated safety valve and method |
| 06/09/2011 | WO2010141405A4 Hydraulic oilfield lift pump |
| 06/09/2011 | WO2010113057A3 Apparatus and method for high pressure slurry pumping |
| 06/09/2011 | US20110135797 Flocculation method |
| 06/09/2011 | US20110132623 Expandable Wellbore Liner System |
| 06/09/2011 | US20110132617 Systems and methods for producing oil and/or gas |
| 06/09/2011 | US20110132616 Wellbore Method and Apparatus For Completion, Production and Injection |
| 06/09/2011 | US20110132615 Offshore drilling and production systems and methods |
| 06/09/2011 | US20110132612 Telescopic Unit with Dissolvable Barrier |
| 06/09/2011 | US20110132611 Temperature-activated swellable wellbore completion device and method |
| 06/09/2011 | US20110132610 Ceramic microspheres for cementing applications |
| 06/09/2011 | US20110132609 Formation fluid sampling tools and methods utilizing chemical heating |
| 06/09/2011 | US20110132607 Apparatus and Technique to Communicate With a Tubing-Conveyed Perforating Gun |
| 06/09/2011 | US20110132604 Method of using lightweight polyamides in hydraulic fracturing and sand control operations |
| 06/09/2011 | US20110132603 Offset interior slurry discharge |
| 06/09/2011 | US20110132602 Systems and methods for producing oil and/or gas |
| 06/09/2011 | US20110132600 Optimized Well Spacing For In Situ Shale Oil Development |
| 06/09/2011 | US20110132595 Electric submersible pumping system with gas vent |
| 06/09/2011 | US20110132593 System, apparatus, and method for producing a multiple zones well |
| 06/09/2011 | US20110132592 Integrated system for the extraction, incineration and monitoring of waste or vented gases |
| 06/09/2011 | DE102009057534A1 Method for discharging sodium chloride brine of natural gas storage cavern, involves introducing gas into injection line for lifting brine, and continuously or discontinuously adding water for dilution of saturated brine to introduced gas |
| 06/09/2011 | CA2782748A1 Downhole artificial lifting system |
| 06/09/2011 | CA2782717A1 Inflow control in a production casing |
| 06/09/2011 | CA2782591A1 Method for monitoring hydrocarbon production |
| 06/09/2011 | CA2782531A1 Technique of fracturing with selective stream injection |
| 06/09/2011 | CA2688392A1 Method of controlling solvent injection to aid recovery of hydrocarbons from an underground reservoir |
| 06/08/2011 | EP2330273A2 Stabplate connections |
| 06/08/2011 | EP2329179A1 Plugged hot tap tee |
| 06/08/2011 | EP2329109A2 Methods and equipment to improve reliability of pinpoint stimulation operations |
| 06/08/2011 | EP2329108A1 Injection of liquid into boreholes, with suckback pulsing |
| 06/08/2011 | EP2329107A2 Sand control screen assembly and method for use of same |
| 06/08/2011 | EP2329106A2 Method, device, and system for determining water or liquid in the annulus of a flexible riser or flowline |
| 06/08/2011 | EP2329103A1 Sand control screen assembly and method for use of same |
| 06/08/2011 | EP2329098A1 Methods and associated apparatus of constructing and installing rigid riser structures |
| 06/08/2011 | CN201860286U Control system for pumping unit in oil field |
| 06/08/2011 | CN201859531U Comprehensive anti-theft system for oil pumping unit |