| 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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| 02/21/2007 | CN1916359A Method for building new slot to implement refracturing |
| 02/21/2007 | CN1916358A Method for coordinating relation for collecting or dissipating as well as injecting or gathering ore mass in narrow and small riverway |
| 02/21/2007 | CN1916357A Multistage pulses enhanced perforation equpment in use for oil and gas well |
| 02/21/2007 | CN1915488A Catalyst in use for reducing viscosity in hydrothermal cracking and catalyzing thick oil underground well |
| 02/20/2007 | US7179386 Discharging sand from a vessel at elevated pressure |
| 02/20/2007 | US7178610 controlling shale swelling in a subterranean formation by treating with the fluids |
| 02/20/2007 | US7178601 Methods of and apparatus for casing a borehole |
| 02/20/2007 | US7178600 Apparatus and methods for utilizing a downhole deployment valve |
| 02/20/2007 | US7178599 Subsurface safety valve |
| 02/20/2007 | US7178596 Methods for improving proppant pack permeability and fracture conductivity in a subterranean well |
| 02/20/2007 | US7178595 Apparatus and method for gravel packing |
| 02/20/2007 | US7178594 Gravel packing a downhole area with a mixture including an alkoxylated fatty amine or polyalkyleneamine surfactant; emulsion can be converted from a water-in-oil to an oil-in-water type emulsion and back again upon protonation and deprotonation |
| 02/20/2007 | US7178593 Piggable separation system and method |
| 02/20/2007 | US7178592 Closed loop multiphase underbalanced drilling process |
| 02/16/2007 | CA2556061A1 Delayed tackifying compositions and associated methods involving controlling particulate migration |
| 02/15/2007 | WO2007019585A2 Methods and compositions for determination of fracture geometry in subterranean formations |
| 02/15/2007 | WO2007017965A1 Method of monitoring underground infiltration of carbon dioxide gas |
| 02/15/2007 | WO2007017355A1 Pipe expander |
| 02/15/2007 | WO2007017353A1 System for cyclic injection and production from a well |
| 02/15/2007 | WO2007006963A3 Method and installation for connecting a rigid submarine pipeline and a flexible submarine pipeline |
| 02/15/2007 | WO2006085791A3 Method for heating an oil-producing well with the aid of a deep-well pump, a device for carrying out said method and a deep-well pump (variants) for said device |
| 02/15/2007 | WO2006041536A3 Angled perforating device for well completions |
| 02/15/2007 | WO2006039665A3 Apparatus and method for well completion |
| 02/15/2007 | WO2005112574A3 Flying lead connector and method for making subsea connections |
| 02/15/2007 | US20070037713 Methods and compositions for reducing the viscosity of treatment fluids used in subterranean operations |
| 02/15/2007 | US20070034410 Methods for reducing circulation loss during drilling operations |
| 02/15/2007 | US20070034408 Method of creating a borehole in an earth formation |
| 02/15/2007 | US20070034383 Apparatus and method for radially expanding a wellbore casing using an expansion mandrel and a rotary expansion tool |
| 02/15/2007 | US20070034378 Methods for effecting controlled break in pH dependent foamed fracturing fluid |
| 02/15/2007 | US20070034377 Downhole non-return valve and method |
| 02/15/2007 | US20070034376 Methods and compositions for reducing the viscosity of treatment fluids used in subterranean operations |
| 02/15/2007 | US20070034375 Techniques and Systems Associated With Perforation And The Installation of Downhole Tools |
| 02/15/2007 | US20070034373 Methods and compositions for determination of fracture geometry in subterranean formations |
| 02/15/2007 | US20070034369 Controlling transient pressure conditions in a wellbore |
| 02/15/2007 | CA2618629A1 Method of monitoring underground diffusion of carbon dioxide |
| 02/15/2007 | CA2618056A1 Pipe expander |
| 02/15/2007 | CA2617891A1 System for cyclic injection and production from a well |
| 02/14/2007 | EP1751396A2 Method and apparatus for performing chemical treatments of exposed geological formations |
| 02/14/2007 | EP1751394A2 Improved down hole oil and gas well heating system and method for down hole heating of oil and gas wells |
| 02/14/2007 | EP1497529B1 Method to form a barrier in a reservoir with a magnetorheological fluid |
| 02/14/2007 | CN2869388Y Equal-wall-thickness stator screw pump for oil production |
| 02/14/2007 | CN2869382Y Electrohydraulic combined screw pump ground driving device |
| 02/14/2007 | CN2869381Y Dual oil-layer combined-production oil pump |
| 02/14/2007 | CN2869380Y Oil pipe pump |
| 02/14/2007 | CN2869379Y Eccentric valve type bias-wear-proof oil pump |
| 02/14/2007 | CN2869318Y Oil field water injection well manometer |
| 02/14/2007 | CN2869315Y Wellhead steam injection heat expansion compensating device |
| 02/14/2007 | CN2869314Y Water injection well integrated regulating-testing device |
| 02/14/2007 | CN2869313Y Large-aperture perforating bullet |
| 02/14/2007 | CN2869312Y Pumping unit maintenance safety device |
| 02/14/2007 | CN2869311Y Eccentric wheel type pumping unit |
| 02/14/2007 | CN2869310Y Two-frame dual-wheel type pumping unit |
| 02/14/2007 | CN2869309Y Dual-wheel type pumping unit |
| 02/14/2007 | CN2869308Y Wheel type pumping unit |
| 02/14/2007 | CN2869302Y Oil pipe blow-out lifting device |
| 02/14/2007 | CN1912340A Pretest method for comprehensive water-containing residual oil engineering at polymer separate stage |
| 02/14/2007 | CN1912339A Method for producing light oil and gas directly using heavy oil on oil field without adding hydrogen |
| 02/14/2007 | CN1912338A Period injection-production method of waterflooding sandstone oil field |
| 02/14/2007 | CN1912337A Oil production method and device of high oil-gas ratio well |
| 02/14/2007 | CN1912336A Oil production system of reciprocating submersible electric pump |
| 02/14/2007 | CN1912188A Formula, preparation method of solid corrosion inhibitor and its using method |
| 02/14/2007 | CN1300462C Sand proof blade guiding wheel |
| 02/14/2007 | CN1300443C Group-well fracture pressure steeping control aqueous fusion exploitation method of glauberite bal |
| 02/14/2007 | CN1300441C Well washing method of hierarchical water injection well and its underwell tubular column |
| 02/13/2007 | US7175748 Subsea production system |
| 02/13/2007 | US7174975 Control systems and methods for active controlled bottomhole pressure systems |
| 02/13/2007 | US7174964 Wellhead with radially expanded tubulars |
| 02/13/2007 | US7174959 Downhole separator system and method |
| 02/13/2007 | US7174764 Apparatus for and a method of expanding tubulars |
| 02/13/2007 | CA2418817C Method of preventing gas breakthrough in an oil bearing formation |
| 02/13/2007 | CA2414685C Gas dissipation chamber for through tubing conveyed esp pumping systems |
| 02/13/2007 | CA2401813C Combined casing expansion/ casing while drilling method and apparatus |
| 02/13/2007 | CA2389145C Multiphase flow measurement system |
| 02/13/2007 | CA2359566C Hydraulic distributor |
| 02/08/2007 | WO2007016268A2 Sintered spherical pellets useful for gas and oil well proppants |
| 02/08/2007 | WO2007015060A1 Methods of forming packs in a plurality of perforations in a casing of a wellbore |
| 02/08/2007 | WO2007015053A1 System and method of flow assurance in a well |
| 02/08/2007 | WO2006104425A8 Method for controlling the composition of an underground coal gasification gas |
| 02/08/2007 | WO2006063200A3 Method and apparatus to deliver energy in a well system |
| 02/08/2007 | US20070032388 Zeolite-containing drilling fluids |
| 02/08/2007 | US20070032386 Internal Breaker for Oilfield Treatments |
| 02/08/2007 | US20070029797 High-strength sealed connection for expandable tubulars |
| 02/08/2007 | US20070029095 Apparatus and method for running a radially expandable tubular member |
| 02/08/2007 | US20070029092 Mono-trip cement thru completion |
| 02/08/2007 | US20070029091 Subsea compression system and method |
| 02/08/2007 | US20070029090 Well Servicing Rig and Manifold Assembly |
| 02/08/2007 | US20070029087 Methods for controlling water and sand production in subterranean wells |
| 02/08/2007 | US20070029086 Methods of forming packs in a plurality of perforations in a casing of a wellbore |
| 02/08/2007 | US20070029085 Prevention of Water and Condensate Blocks in Wells |
| 02/08/2007 | US20070029080 Deformable member |
| 02/07/2007 | CN2867042Y Thermal recovery conversion flange |
| 02/07/2007 | CN2866904Y Booster water filling electric submersible pump |
| 02/07/2007 | CN2866900Y Efficient energy-saving rod oil-well pump |
| 02/07/2007 | CN2866812Y Natural gas well separate fracturing merging-layer extracting integral tubelar column |
| 02/07/2007 | CN2866811Y Prestressing super-high pressure ground movement gas-injection pipe and gas-injection pipeline |
| 02/07/2007 | CN2866810Y Multi-pulse over-positive pressure perforating device |
| 02/07/2007 | CN2866809Y Sand well over-layer circulating sand-carrying oil extracting device |
| 02/07/2007 | CN2866808Y Beam-pumping unit jig frequency fast regulator |
| 02/07/2007 | CN2866807Y Energy-storing balanced hydraulic beam-pumping unit |
| 02/07/2007 | CN2866806Y Oilwell down conversion heating device |