| 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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| 09/05/2013 | US20130228327 Debris Catcher for Retrievable Barrier |
| 09/05/2013 | US20130228066 Resistor-based Ignition System for a Core Gun |
| 09/04/2013 | EP2634364A1 Gas injection control devices and methods of operation thereof |
| 09/04/2013 | EP2633156A1 Methods to enhance the productivity of a well |
| 09/04/2013 | EP2633155A1 Method of making progressing cavity pumping systems |
| 09/04/2013 | EP2633154A2 Method and apparatus for evacuating hydrocarbons from a distressed well |
| 09/04/2013 | EP2633153A1 Process for the in situ extraction of bitumen or ultraheavy oil from oil sand deposits as reservoir |
| 09/04/2013 | EP2633150A1 Remotely operated underwater redirection plenum chamber for spill response |
| 09/04/2013 | CN203175843U Sliding sand preventing device of oil well pump |
| 09/04/2013 | CN203175817U High-temperature large-caliber oil well pump for oil field |
| 09/04/2013 | CN203175550U 岩心密封装置 Core sealing device |
| 09/04/2013 | CN203175549U Core holding unit for simulation test of hierarchy steam injection |
| 09/04/2013 | CN203175541U Full automatic digital metering device |
| 09/04/2013 | CN203175540U Non-concentrating electromagnetic flow type down-hole measuring and adjusting instrument |
| 09/04/2013 | CN203175530U Special filtered sand reflux device for coal-bed gas well |
| 09/04/2013 | CN203175529U Bottom lead-into type downhole oil-water separating device |
| 09/04/2013 | CN203175528U Underground oil water separating device with multilevel parallel connection hydraulic cyclones |
| 09/04/2013 | CN203175527U Underground electric hydraulic control fracturing slide bushing |
| 09/04/2013 | CN203175526U Multistage anti-pollution sandblasts |
| 09/04/2013 | CN203175525U Production increasing and reformation experimental apparatus for coal reservoir in formation condition |
| 09/04/2013 | CN203175524U Removable oil well downhole electric igniter |
| 09/04/2013 | CN203175523U Energy saving and wax removal water mixing device |
| 09/04/2013 | CN203175522U Oil well heater running device |
| 09/04/2013 | CN203175521U Concentric tube tracing heat gas injection gas production technology tubular column |
| 09/04/2013 | CN203175520U Profile control and displacement integrated device |
| 09/04/2013 | CN203175519U Constant flowing water regulator |
| 09/04/2013 | CN203175518U Novel oilfield down-hole separate injection tool |
| 09/04/2013 | CN203175517U Constant pressure and quantification water discharging device of water injection well |
| 09/04/2013 | CN203175516U Interactive separated layer water injection testing and controlling device |
| 09/04/2013 | CN203175515U Novel high-pressure water well pressure drop testing device |
| 09/04/2013 | CN203175514U Adjustable cut-off water nozzle |
| 09/04/2013 | CN203175513U Whole-course visualized rock core oil displacement experimental device |
| 09/04/2013 | CN203175512U Spring type pressure measuring and sealing device of lead cylinder |
| 09/04/2013 | CN203175511U Pressure measuring sealing barrel |
| 09/04/2013 | CN203175510U Clamping ring type lead drum pressure measuring sealing device |
| 09/04/2013 | CN203175509U Automatic selective-assembly injecting tubular column for air and steam injection |
| 09/04/2013 | CN203175508U Fire flooding influenced well concentric type exhausting, thin oil mixing and oil extracting production tubular column |
| 09/04/2013 | CN203175507U Impact unlocking safe detonating device for detonating perforating gun of oil-gas well well-completion practice |
| 09/04/2013 | CN203175506U Perforating gun for oil-gas well |
| 09/04/2013 | CN203175505U Directional hydraulic ejector and tubular column thereof |
| 09/04/2013 | CN203175504U Sand control screen for oil well completion pipe string |
| 09/04/2013 | CN203175503U Tubular column for safety production in fluid producing and injecting process through one well of offshore oilfield |
| 09/04/2013 | CN203175502U All-walking-beam self-balancing device |
| 09/04/2013 | CN203175501U Flexible friction reverse wheel |
| 09/04/2013 | CN203175500U Marine non-well-control electric pump lifting technique pipe column |
| 09/04/2013 | CN203175499U Hydraulic type balancing oil production device |
| 09/04/2013 | CN203175498U Full-automatic walking beam track sliding balancing device |
| 09/04/2013 | CN203175497U Oil well eccentric-wear-prevention centralizer pumping-assistance device |
| 09/04/2013 | CN203175496U Hydraulic energy-saving driving device of oil pumping unit |
| 09/04/2013 | CN203175491U Underground integrated three proofing tool |
| 09/04/2013 | CN203175485U Sliding sleeve control tool and hydraulically controlled sliding sleeve capable of extending to conduct operation |
| 09/04/2013 | CN203175482U Quantifying steam distributing valve |
| 09/04/2013 | CN203175467U Adjustable water faucet |
| 09/04/2013 | CN203175444U Resonator used for underground steam heating of oil layer in oil well |
| 09/04/2013 | CN103282597A Secondary flow path module, gravel packing system including the same, and method of assembly thereof |
| 09/04/2013 | CN103282595A Lateral junction assembly |
| 09/04/2013 | CN103282271A Subsea anchor |
| 09/04/2013 | CN103277131A Gas separating device and gas separating method |
| 09/04/2013 | CN103277092A Horizontal well multistage fracturing variable mass multiphase flow simulation experiment device |
| 09/04/2013 | CN103277085A Winding sensor for acidizing operation |
| 09/04/2013 | CN103277082A Gas injection point retreating type coal underground gasification system and process |
| 09/04/2013 | CN103277081A Treatment process and device for oil-water well fractured and acidified flowback liquid |
| 09/04/2013 | CN103277080A Winding sensor for fracturing operation |
| 09/04/2013 | CN103277079A String and fracturing construction method for horizontal well fracturing completion |
| 09/04/2013 | CN103277078A Hydraulic sliding sleeve |
| 09/04/2013 | CN103277077A Filling and extraction system achieving fireflood auxiliary gravity oil drainage based on intelligent temperature control and filling and extraction method |
| 09/04/2013 | CN103277076A Micro-porous polymer molecular weight regulating device |
| 09/04/2013 | CN103277075A Technology for realizing solid burying maximization and residual oil displacement by supercritically injecting CO2 (carbon dioxide) excessively into oil well |
| 09/04/2013 | CN103277074A Foamed-nickel-based silicon alloy sand preventing device and manufacturing method thereof |
| 09/04/2013 | CN103277073A Leak-proof submarine oil drilling work station |
| 09/04/2013 | CN103277072A Method and system for exploiting seabed natural gas hydrate |
| 09/04/2013 | CN103277071A Hydraulic feedback device of oil pump |
| 09/04/2013 | CN103277070A Rolling type pumping unit guide shoe |
| 09/04/2013 | CN103277069A Fluid driving pumping unit and application method thereof |
| 09/04/2013 | CN103277063A Tangential vortex annulus fracturing wellhead device |
| 09/04/2013 | CN103275690A Crosslinking agent for polymer hydrofracturing fluid as well as preparation and application of crosslinking agent |
| 09/04/2013 | CN103275686A Water-control low-temperature curing resin coated sand control particle and sand control method |
| 09/04/2013 | CN103275682A Emulsified acid for water plugging of oil well, preparation method of emulsified acid and oil well water-plugging method using emulsified acid |
| 09/04/2013 | CN103274037A Seabed working cabin with safety doors |
| 09/04/2013 | CN102453167B Polymer oil displacement agent, preparation method thereof, and oil displacement method for oil reservoirs |
| 09/04/2013 | CN102305053B Two-level hydraulic variable-diameter expansion tool |
| 09/04/2013 | CN102278098B Method for realizing accurate oriented perforating by cable transmission |
| 09/04/2013 | CN102268984B Atomizing device of composite heat carrier generator |
| 09/04/2013 | CN102226078B Oil well sand controlling pretreatment agent for improving sand controlling effect, and application thereof |
| 09/04/2013 | CN102140337B Hydrophobically associating hydroxyethylcellulose oil displacement agent |
| 09/04/2013 | CN102071916B Jet pump thereof |
| 09/04/2013 | CN102041988B Multistage drive ore dissolution method used for mining salt mines |
| 09/04/2013 | CN101959992B Systems and methods for producing oil and/or gas |
| 09/04/2013 | CN101864904B Operation device for stripping sucker rod at pressure |
| 09/04/2013 | CN101802345B Tubular expander |
| 09/04/2013 | CN101575966B Method for water plugging and profile controlling of underground polymerization of oil exploitation sludge |
| 09/04/2013 | CN101115906B Composition and method for making a proppant |
| 09/03/2013 | US8527100 Method of providing a flow control device that substantially reduces fluid flow between a formation and a wellbore when a selected property of the fluid is in a selected range |
| 09/03/2013 | US8524643 Surfactant mixtures for tertiary oil recovery |
| 09/03/2013 | US8524642 Multicomponent viscoelastic surfactant fluid and method of using as a fracturing fluid |
| 09/03/2013 | US8524639 Complementary surfactant compositions and methods for making and using same |
| 09/03/2013 | US8524152 Systems and methods for enhancing rates of in situ carbonation of peridotite |
| 09/03/2013 | US8522882 Apparatus and method for pumping well fluids and debris |
| 09/03/2013 | US8522881 Thermal hydrate preventer |
| 09/03/2013 | US8522876 In situ extraction of hydrocarbons from hydrocarbon-containing materials |