| 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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| 03/05/2008 | CN201031677Y Boiler flue gas pressurization absorption CO2 liquify pouring well oil production device |
| 03/05/2008 | CN201031676Y Boiler flue gas pressurization absorption CO2 gaseous state pouring well oil production device |
| 03/05/2008 | CN201031675Y Steam CO2 nitrogen linkage-pouring oil production device |
| 03/05/2008 | CN201031674Y Horizontal well externally oriented perforating gun orientation link |
| 03/05/2008 | CN201031673Y Through-hole pressure relief hole type inner blind hole composite gun perforation gun |
| 03/05/2008 | CN201031672Y Bridge type filtering sieve tube |
| 03/05/2008 | CN201031671Y Bridge type composite sieve tube |
| 03/05/2008 | CN201031670Y Bridge type gap sieve tube |
| 03/05/2008 | CN201031669Y Energy conservation type oil pumping machine |
| 03/05/2008 | CN201031668Y Upper triangular type beam-pumping unit |
| 03/05/2008 | CN201031667Y Open teeth type energy conservation beam-pumping unit |
| 03/05/2008 | CN201031666Y Synergistic pumping unit |
| 03/05/2008 | CN201031665Y High-pressure well head unpowered power feeding device |
| 03/05/2008 | CN201031657Y Switch device under thick oil thermal recovery high-temperature high-pressure well |
| 03/05/2008 | CN201031656Y Small flow water injection regulation valve for oilfield |
| 03/05/2008 | CN201031629Y Horizontal well heat picking casing head |
| 03/05/2008 | CN101137885A Shaped charge assembly and method of damaging a target |
| 03/05/2008 | CN101135910A oil pumping with lever system ground facilities efficiency evaluate method |
| 03/05/2008 | CN101135241A Gradually varied flow pressure-reading process injection water well flow allocation technique |
| 03/05/2008 | CN101135240A Fluctuation displacement gas deposit dislodging method |
| 03/05/2008 | CN101135239A Micro-porous coarse aggregate filter and method for making same |
| 03/05/2008 | CN100373051C Wind and electricity hybrid driving method and apparatus for sucker rod pump |
| 03/04/2008 | US7338924 Oil-in-water-in-oil emulsion |
| 03/04/2008 | US7337854 Gas-pressurized lubricator and method |
| 03/04/2008 | US7337851 Rotating stuffing box with split standpipe |
| 03/04/2008 | US7337846 Surface controlled subsurface lateral branch safety valve |
| 03/04/2008 | US7337844 Perforating and fracturing |
| 03/04/2008 | US7337841 Casing comprising stress-absorbing materials and associated methods of use |
| 03/04/2008 | US7337840 One trip liner conveyed gravel packing and cementing system |
| 03/04/2008 | US7337660 Method and system for reservoir characterization in connection with drilling operations |
| 03/01/2008 | CA2600053A1 Rod-shaped proppants and anti-flowback additives, methods of manufacturing, and methods of use |
| 02/29/2008 | CA2746623A1 Injection valve |
| 02/29/2008 | CA2599802A1 Downhole isolation valve and methods for use |
| 02/28/2008 | WO2008024868A2 Method of obtaining a treatment composition for improving the productivity of hydrocarbon producing wells |
| 02/28/2008 | WO2008024865A2 Compositions and methods for improving the productivity of hydrocarbon producing wells |
| 02/28/2008 | WO2008024547A2 Well chemical treatment utilizing plunger lift delivery system with chemically improved plunger seal |
| 02/28/2008 | WO2008024448A1 Non-intrusive flow indicator |
| 02/28/2008 | WO2008002679A3 Method of repairing failed gravel packs |
| 02/28/2008 | WO2007116366A3 Method for treating a subterranean formation |
| 02/28/2008 | WO2007084763A3 Radio frequency technology heater for unconventional resources |
| 02/28/2008 | US20080051300 Compositions and method for improving the productivity of hydrocarbon producing wells |
| 02/28/2008 | US20080047707 Method and system for treating a subterranean formation |
| 02/28/2008 | US20080047706 Method of obtaining a treatment composition for improving the productivity of hydrocarbon producing wells |
| 02/28/2008 | US20080047705 Methods & systems for the automated operation and control of a continuous loop pump |
| 02/28/2008 | US20080047326 Method and System for Storing Liquid in a Geological Formation |
| 02/28/2008 | CA2599232A1 Compositions and methods for extracting hydrocarbons from oil sands |
| 02/27/2008 | EP1892373A1 Self-conforming well screen |
| 02/27/2008 | EP1891298A1 Water flooding method |
| 02/27/2008 | EP1718841B1 Annular pressure relief collar |
| 02/27/2008 | EP1671014B1 Improvements in and relating to perforators |
| 02/27/2008 | CN201027934Y Belt tension device of oil pumping machine |
| 02/27/2008 | CN201027865Y Electromagnetic pulse anti-theft brake |
| 02/27/2008 | CN201027649Y Separate-layer oil extraction screw pump |
| 02/27/2008 | CN201027648Y Straight-rotary screw pump |
| 02/27/2008 | CN201027643Y Sand setting type oil well pump barrel assembly |
| 02/27/2008 | CN201027642Y Rod type underbalance oil well pump |
| 02/27/2008 | CN201027641Y Novel combined vertical solid-liquid hydroclone |
| 02/27/2008 | CN201027636Y Adjusting device for balance weight of oil pumping machine |
| 02/27/2008 | CN201027635Y Reversing arrangement for rocker arm type oil pumping machine |
| 02/27/2008 | CN201027634Y Electric pump well guard |
| 02/27/2008 | CN201027633Y Lever-type oil rig |
| 02/27/2008 | CN201027632Y Upper catcher for oil pump |
| 02/27/2008 | CN201027631Y Helical check valve |
| 02/27/2008 | CN201027536Y Differential pressure type drilling-free blankoff flange |
| 02/27/2008 | CN201027535Y Linear oil pumping machine of stand mast holder |
| 02/27/2008 | CN201027534Y Multi-rope double-cylinder compound-wound friction-type oil-pumping machine |
| 02/27/2008 | CN201027533Y Torsion deflection adjusting rope hanger |
| 02/27/2008 | CN201027532Y Novel degradable anti-dirt guard for well pumping unit |
| 02/27/2008 | CN201027522Y Well head device for double-pipe thermal oil-extraction |
| 02/27/2008 | CN201027509Y Annulus compression fracture hanger |
| 02/27/2008 | CN101133231A Degradable polymers for wellbore fluids and processes |
| 02/27/2008 | CN101133135A Use of water-soluble alkane sulfonic acids for increasing the permeability of underground petroliferous and/or gas-bearing carbonate rock formations and for dissolving carbonate contaminants and/or co |
| 02/27/2008 | CN101132126A Fast traversing joint device used for electric cable of electric pump oil extraction well mouth |
| 02/27/2008 | CN101131088A Application of Bocklin compound microbial agent |
| 02/27/2008 | CN101131087A Biological oil production method for extra-heavy crude oil |
| 02/27/2008 | CN101131086A Oil production method using biosurfactant |
| 02/27/2008 | CN101131085A Oil production method using indigenous microorganism |
| 02/27/2008 | CN101131084A Method for promoting yield increase of oil well |
| 02/27/2008 | CN101131083A Air-auxiliary microbial oil production method |
| 02/27/2008 | CN101131082A Underground microbial oil production method |
| 02/27/2008 | CN101131081A Ground microbial oil production method |
| 02/27/2008 | CN101131080A Oil production method with microbial single well stimulation |
| 02/27/2008 | CN101131079A Microbial oil production method |
| 02/27/2008 | CN101131078A Oil production method by injecting into microorganism in segmented mode |
| 02/27/2008 | CN101131077A Well choosing method for microbial oil extraction |
| 02/27/2008 | CN101131076A Oil production technology for Bocklin compound microbial agent |
| 02/27/2008 | CN101131075A Oil well microbial profile control and water shutoff method |
| 02/27/2008 | CN101131074A Hanger of minor-diameter pipe subsurface agent and gas pouring device |
| 02/27/2008 | CN101131071A Liquid fill adapter for gas well |
| 02/27/2008 | CN101131070A Protective sleeve for threaded connections for expandable liner hanger |
| 02/27/2008 | CN101131068A Yield increasing technique for fixed point deep penetration horizontal drilling in oil-water well oil layer |
| 02/27/2008 | CN101130806A Method for screening pseudomonas strain used for oil extraction and application thereof |
| 02/27/2008 | CN101130753A Indigenous microorganism nutrient solution |
| 02/26/2008 | US7336474 Microelectromechanical devices |
| 02/26/2008 | US7334641 supplying a mixture of petroleum distillates, terpenes, humic acid and fulvic acid, into wells and circulation to reduce deposits |
| 02/26/2008 | US7334640 Methods for reducing the viscosity of treatment fluids |
| 02/26/2008 | US7334637 Assembly and method for determining thermal properties of a formation and forming a liner |
| 02/26/2008 | US7334636 Methods of creating high-porosity propped fractures using reticulated foam |
| 02/26/2008 | US7334635 Methods for fracturing subterranean wells |
| 02/26/2008 | CA2483896C Applications of waste gas injection into natural gas reservoirs |