Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 43 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
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)
05/2012
05/16/2012CN202220598U Three-dimensional electric analog experiment device of horizontal well exploitation
05/16/2012CN202220592U Waterpower ejector
05/16/2012CN202220591U Heat injection and oil production device for injection-production separation oil well
05/16/2012CN202220590U Self-lifting type water-injecting and flushing pipe string for flushing well
05/16/2012CN202220589U Inclined well delivery valve
05/16/2012CN202220588U Sand screening pipe device with trapezoidal toothed stainless steel plate mesh cylinder
05/16/2012CN202220587U Three-dimensional multiple-well combined exploitation experiment device for natural gas hydrate
05/16/2012CN1988970B Process for stimulating production of methane from petroleum in subterranean formations
05/16/2012CN102459809A 改进的井下传送系统 Improved underground transport system
05/16/2012CN102459808A 用伸缩元件压裂和密封环形空间 Fracturing and sealed with a telescopic element annular space
05/16/2012CN102459807A 用于监测流体的方法和装置 Method and apparatus for monitoring fluid
05/16/2012CN102459806A 用于石油和天然气井中的压裂操作的主动式外套管封隔器（ecp） For oil and gas wells fracturing operations active jacket packer (ecp)
05/16/2012CN102454402A Method for testing damages to reservoir caused by foam fracturing fluid
05/16/2012CN102454397A Novel solid fuel igniter
05/16/2012CN102454396A Method for profile control by using formation polymer in offshore oil field polymer flooding process
05/16/2012CN102454395A 油膜驱替特性模拟装置及系统 Feature film displacement device and system simulation
05/16/2012CN102454394A Method for displacing methane from natural gas hydrate
05/16/2012CN102454393A Method and device for adjusting flow of underground distributed water in up and down reciprocating motion manner
05/16/2012CN102454392A Antifriction resistance-reduction universal shaft
05/16/2012CN102454391A Combined frame of W-type traction oil pumping machine
05/16/2012CN102454390A Pumping unit employing centralized lubrication
05/16/2012CN102454389A Pumping unit with improved support assembly
05/16/2012CN102454388A Energy-saving oil pumping machine
05/16/2012CN102454387A Oil pumping machine
05/16/2012CN102454386A Subsurface heating device
05/16/2012CN102453471A Fresh water-based micro bubble drilling fluid for drilling coal bed gas
05/16/2012CN102453167A Polymer displacement agent, preparation method thereof, and oil displacement method for oil reservoirs
05/15/2012US8179279 Method and device for producing hydrocarbons using wireless communication
05/15/2012US8177526 Gas well dewatering system
05/15/2012US8177305 Heater connections in mines and tunnels for use in treating subsurface hydrocarbon containing formations
05/15/2012US8176982 Method of controlling a recovery and upgrading operation in a reservoir
05/15/2012US8176981 Fluorinated surfactants and methods of using the same
05/15/2012US8176980 Method of gas-cap air injection for thermal oil recovery
05/15/2012US8176979 Injection well surveillance system
05/15/2012US8176978 Method for optimizing in-situ bioconversion of carbon-bearing formations
05/15/2012US8176971 Earth heat transfer loop apparatus
05/15/2012CA2725112C Subterranean treatment fluids, friction reducing copolymers, and associated methods
05/15/2012CA2677595C Active circuit protection of downhole electrical submersible pump monitoring gauges
05/15/2012CA2643835C Diverting compositions, fluid loss control pills, and breakers thereof
05/15/2012CA2626749C Diverter plugs for use in well bores and associated methods of use
05/15/2012CA2523348C Method of creating a borehole in an earth formation
05/12/2012CA2756990A1 A cable integrating fiber optics to power and control an electrical submersible pump assembly and related methods
05/12/2012CA2720929A1 Drive mechanism for transmitting rotational torque
05/10/2012WO2012061455A2 Reduced profile abrasion resistant pump thrust bearing
05/10/2012WO2012061364A2 Prevention of biomass aggregation at injection wells
05/10/2012WO2012061202A2 Method and apparatus for creating an annular barrier in a subterranean wellbore
05/10/2012WO2012061147A1 Salt-tolerant, thermally-stable rheology modifiers
05/10/2012WO2012061027A1 Selective hydrate production with co2 and controlled depressurization
05/10/2012WO2012060950A1 Chemical delivery apparatus, system, and method for hydrocarbon production
05/10/2012WO2012059859A1 Method and apparatus for completion of heavy oil unconsolidated sand reservoirs
05/10/2012WO2012059714A1 Additives to suppress silica scale build-up and methods of use thereof
05/10/2012WO2012059578A1 System and method for radially expanding a tubular element comprising an emergency blow-out preventer
05/10/2012WO2012059574A1 System and method for radially expanding a tubular element
05/10/2012WO2012059475A1 Capture device for a bore hole of a fluid source
05/10/2012WO2012037334A3 Cyclic steam stimulation using rf
05/10/2012WO2012037147A9 Gravity drainage startup using rf & solvent
05/10/2012WO2012024490A3 Methods for testing stimulation fluids
05/10/2012WO2011161572A3 Method of treating a wellbore at high temperature in contact with carbon dioxide
05/10/2012US20120111578 Equipment and method for reinforcing a borehole of a well while drilling
05/10/2012US20120111570 Wellbore treatment compositions comprising hydrophilically modified polymers and nonionic surfactants
05/10/2012US20120111569 Chemical delivery apparatus, system, and method for hydrocarbon production
05/10/2012US20120111568 COMPOSITIONS USEFUL FOR THE HYDROLYSIS OF GUAR IN HIGH pH ENVIRONMENTS AND METHODS RELATED THERETO
05/10/2012US20120111567 Formate salts for increased stability of polyacrylamide fluids
05/10/2012US20120111566 Apparatus and method for stimulating subterranean formations
05/10/2012US20120111565 Methods to enhance the productivity of a well
05/10/2012US20120111564 Methods and Compositions for Altering the Viscosity of Treatment Fluids Used in Subterranean Operations
05/10/2012US20120111563 Methods to deliver fluids on a well site with variable solids concentration from solid slurries
05/10/2012US20120111562 Viscoelastic Composition With Improved Viscosity
05/10/2012US20120111560 Fracture Monitoring
05/10/2012CA2816953A1 Capture device for a bore hole of a fluid source
05/10/2012CA2816676A1 Reduced profile abrasion resistant pump thrust bearing
05/10/2012CA2816202A1 Methods, strains, and compositions useful for microbially enhanced oil recovery: pseudomonas stutzeri
05/10/2012CA2814400A1 Prevention of biomass aggregation at injection wells
05/10/2012CA2814224A1 Additives to suppress silica scale build-up and methods of use thereof
05/10/2012CA2795641A1 Method and apparatus for completion of heavy oil unconsolidated sand reservoirs
05/09/2012EP2450526A1 Catching device for a bore hole of a fluid source
05/09/2012EP2449293A2 Tubular valve system and method
05/09/2012EP2449264A1 Method for delivering fluids using centrifugal pumps
05/09/2012EP2449211A2 Remotely controllable manifold
05/09/2012EP2449210A1 Arrangement used in oil field wells for lifting hydrocarbons
05/09/2012EP2449209A2 System and method for intermittent gas lift
05/09/2012EP2449206A2 Wellbore laser operations
05/09/2012EP2449205A2 Improved methods and systems for integrated material processing
05/09/2012EP2229503B1 Apparatus and methods for controlling and communicating with downhole devices
05/09/2012EP1668287B1 Positive pressure gas jacket for a natural gas pipeline
05/09/2012CN202216231U High-dryness steam injection boiler
05/09/2012CN202215279U Coal seam presplitting device
05/09/2012CN202215240U Wake-up device of underground control system
05/09/2012CN202215224U Connector for CO2 gas mining devices
05/09/2012CN202215223U Technology for limit-free staged fracturing down-hole string of horizontal open well
05/09/2012CN202215222U Three-pipe thermal recovery wellhead of extremely-thicken oil horizontal well fireflood-assisted gravity drainage
05/09/2012CN202215221U Steam-distributing ball injector
05/09/2012CN202215220U Concentric type lamination steam driving underground process tubular column
05/09/2012CN202215219U Foam drainage rod putting device with external driving mechanism
05/09/2012CN202215218U Balancing tank instilling device
05/09/2012CN202215217U Water-injecting pressurizing device
05/09/2012CN202215216U Device generating pulse at well mouth by means of solenoid valve
05/09/2012CN202215215U Energy-saving oil production device
05/09/2012CN202215214U Cable transmission orientation percolation positioning device
05/09/2012CN202215213U Sand control pipe thermal compensation device
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