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 47 - Survey of boreholes or wells
Patents for E21B 47 - Survey of boreholes or wells (31,352)
04/2014
04/09/2014CN103711474A Orthogonal dipole acoustic and electric combined logging instrument
04/09/2014CN103711469A Horizontal well switchable type well cementation staged fracturing oil production technology
04/09/2014CN103711462A Leaching experimental facility for in-situ leaching uranium mining
04/09/2014CN103711460A Deep water pipeline multi-circuit bridging system and testing and installing method thereof
04/09/2014CN102410013B Method for monitoring hole depth in drilling process of cable drill pipe
04/09/2014CN102140908B Device and method for evaluating sand prevention performance of sand prevention sieve pipe
04/09/2014CN102094625B Constant power dual laterolog equipment circuit and control method thereof
04/09/2014CN102094621B Thick film circuit of voltage and current measuring circuit of micro-spherically focused logging instrument
04/09/2014CN101963056B Method for predicting carbonate formation pore pressure by using log information
04/09/2014CN101660405B Limnimeter for measuring underground water level
04/09/2014CN101467070B Antenna cutout in downhole tubular
04/08/2014US8693284 Apparatus for creating pressure pulses in the fluid of a bore hole
04/08/2014US8692989 Method for hydrocarbon well completion
04/08/2014US8692668 Network based system for predicting landslides and providing early warnings
04/08/2014US8692182 Ruggedized high temperature compatible radiation detector
04/08/2014US8689904 Detection of gas influx into a wellbore
04/08/2014US8689903 Coring apparatus and methods
04/08/2014US8689884 Mud pulse telemetry system
04/08/2014US8689868 Tractor communication/control and select fire perforating switch simulations
04/08/2014US8689867 Method and apparatus for pipe-conveyed well logging
04/08/2014US8689621 Method and apparatus for in-situ wellbore measurements
04/08/2014US8689620 Pressure balancing device
04/08/2014CA2558424C Extracting and processing hydrocarbon-bearing formations
04/05/2014CA2791982A1 Hybrid seismic sensor network
04/03/2014WO2014052633A1 Strike and dip tooltip for seismic sections
04/03/2014WO2014052400A1 Triggerable lost circulation material and method of use
04/03/2014WO2014052197A1 Electromagnetic data telemetry for downhole well drilling
04/03/2014WO2014051612A1 Self-guided geosteering assembly and method for optimizing well placement and quality
04/03/2014WO2014051595A1 Well tool pressure testing
04/03/2014WO2014051568A1 In-line sand screen gauge carrier
04/03/2014WO2014051566A1 Snorkel tube with debris barrier for electronic gauges placed on sand screens
04/03/2014WO2014051565A1 Method of placing distributed pressure gauges across screens
04/03/2014WO2014051561A1 Completion assembly and methods for use thereof
04/03/2014WO2014051559A1 Tubing conveyed multiple zone integrated intelligent well completion
04/03/2014WO2014049360A2 Well isolation
04/03/2014WO2014022320A3 Monitoring, diagnosing and optimizing gas lift operations
04/03/2014WO2013130551A3 Method for transient testing of oil wells completed with inflow control devices
04/03/2014WO2013121299A3 High definition drilling rate of penetration for marine drilling
04/03/2014WO2013101636A3 Method and system for calibrating a downhole imaging tool
04/03/2014US20140091944 Gauge for use in wired-pipe telemetry applications
04/03/2014US20140090890 Detection Of Tool In Pipe
04/03/2014US20140090889 Mining drill with gradient sensing
04/03/2014US20140090837 Detection of position of a plunger in a well
04/03/2014US20140090835 Systems and methods for the determination of gas permeability
04/02/2014EP2712386A2 Apparatus, system and method for determining at least one downhole parameter of a wellsite
04/02/2014EP2712385A1 Reducing trips in well operations
04/02/2014CN203515576U Horizontal well process simulation test device
04/02/2014CN203515574U Cementing fluid washing efficiency evaluation device
04/02/2014CN203515570U Storage well logging case
04/02/2014CN203515569U Pulse generator
04/02/2014CN203515568U Non-magnetic tray
04/02/2014CN203515567U Oil tube leakage detection switch
04/02/2014CN203515566U Tubing coupling detector
04/02/2014CN203515565U Oil well temperature measuring device
04/02/2014CN203515564U Automatic pressure test recording meter
04/02/2014CN203515563U Pressure drop tester for water injection well mouth
04/02/2014CN203515562U Automatic-control type pressure testing device for well completion tubing string
04/02/2014CN203515561U Direct-reading-type pressure gauge
04/02/2014CN203515560U Borehole stress monitoring device
04/02/2014CN203515559U Oil-gas well liquid level depth testing device
04/02/2014CN203515558U Deep-well water source well water level monitoring technological pipe column
04/02/2014CN203515557U Sucker-rod pump well long-distance liquid level monitoring device capable of automatically switching testing modes
04/02/2014CN203515556U Linear fixed wireless deep hole clinometer and deep hole inclinometry system
04/02/2014CN203515555U Electronic point-to-multipoint integrated comprehensive inclinometer
04/02/2014CN203515554U Damping device special for underground measuring instrument
04/02/2014CN203515553U Logging signal processing circuit and logging device
04/02/2014CN203515552U Instantaneous neutron uranium mine logging unit based on epithermal neutron time spectrum
04/02/2014CN203515551U Logging truck
04/02/2014CN203515550U Horizontal well logging centering device
04/02/2014CN203515549U Battery encapsulating device for small hole measurement-while-drilling apparatus
04/02/2014CN203515548U Combined logger with hydrogen sulfide resistance
04/02/2014CN203515547U No-cable well logging device
04/02/2014CN203515420U One-time drilling inclination survey and windowing device
04/02/2014CN203515407U Roller-type flexible sliding device for horizontal well test
04/02/2014CN203515406U Down-hole instrument traction device
04/02/2014CN203515404U Anti-dislocation positioning installation rod for borehole stress meter
04/02/2014CN203515350U Single-point and multi-point direction-measuring nipple
04/02/2014CN103703214A Depth/orientation detection tool and methods thereof
04/02/2014CN103696766A Specific resistance measurement while drilling device and measurement method thereof
04/02/2014CN103696764A Seismic-while-drilling vibration signal acquisition system
04/02/2014CN103696763A Continuous wave generator rotary valve based on triangular valve body
04/02/2014CN103696762A Rotation-driven swing valve type continuous wave generator
04/02/2014CN103696761A Transducer nipple for acoustic logging while drilling
04/02/2014CN103696760A Near-bit measurement while drilling sound wave short distance transmission method and transmission device
04/02/2014CN103696759A Electric direct reading test sealing checking tool
04/02/2014CN103696758A Winch, drifting device and logging depth measuring method
04/02/2014CN103696757A Device for measuring lateral force and axial force of drill bit during simulated drilling
04/02/2014CN103696756A Method for video monitoring of gas yielding conditions of every coal seam in coal seam gas well production process
04/02/2014CN103696755A Insulation pup joint used for electromagnetic wireless measurement while drilling and manufacturing method for insulation pup joint
04/02/2014CN103696754A Mandrel assembly for induction logging instrument probe nipple and manufacturing method thereof
04/02/2014CN103696753A In-well drill-following navigation method based on magnetic detection
04/02/2014CN102518421B Physical simulation visualization experimental device and forming method thereof
04/02/2014CN102418511B Draw-down test analysis method for underground shut-in water well with low-permeability storage layer
04/02/2014CN102364046B Multi-phase flow meter for underground pipeline
04/02/2014CN102296943B Plunger tool for gas recovery by liquid drainage in gas wells
04/02/2014CN102224320B Sand control screen assembly and method for use of same
04/02/2014CN102220865B Method for detecting limestone formation pore pressure
04/01/2014US8686731 Tracking positions of personnel, vehicles, and inanimate objects
04/01/2014US8684108 System and method for monitoring and controlling underground drilling
04/01/2014US8684107 System and method for densely packing wells using magnetic ranging while drilling
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