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)
09/2012
09/26/2012CN101550824B Temperature difference type single well metering device
09/25/2012US8272439 Downhole tool delivery system with self activating perforation gun
09/25/2012US8272438 System and method for robustly and accurately obtaining a pore pressure measurement of a subsurface formation penetrated by a wellbore
09/25/2012US8272437 Enhanced geothermal systems and reservoir optimization
09/25/2012CA2677325C Wireless communications associated with a wellbore
09/25/2012CA2666180C Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell
09/25/2012CA2486235C An automatic control system and method for bottom hole pressure in the underbalance drilling
09/20/2012WO2012125936A2 Downhole rebound hardness measurement while drilling or wireline logging
09/20/2012WO2012125934A2 Piezoelectric transducer and downhole tool for measuring fluid properties
09/20/2012WO2012125369A2 Maximum depth of investigation of measurements in a formation
09/20/2012WO2012125300A1 Self centering bore measurement unit
09/20/2012WO2012125251A2 System and method to compensate for arbitrary optical fiber lead-ins in an optical frequency domain reflectometry system
09/20/2012WO2012125139A1 Methods and systems of estimating formation parameters
09/20/2012WO2012082620A3 Improved alignment of downhole strings
09/20/2012WO2012015894A8 System and method for directional drilling
09/20/2012WO2011079171A8 Shock tolerant heat dissipating electronics package
09/20/2012WO2011049828A8 Methods for characterization of formations, navigating drill paths, and placing wells in earth boreholes
09/20/2012US20120234534 Wellhead Ball Launch and Detection System and Method
09/20/2012US20120234533 Precision marking of subsurface locations
09/20/2012CA2830209A1 Precision marking of subsurface locations
09/20/2012CA2829681A1 Self centering bore measurement unit
09/20/2012CA2828719A1 Methods and systems of estimating formation parameters
09/20/2012CA2827713A1 System and method to compensate for arbitrary optical fiber lead-ins in an optical frequency domain reflectometry system
09/19/2012EP2500513A1 Method for geological storage of gas by geochemical analysis of noble gases
09/19/2012EP2499331A2 Downhole progressive pressurization actuated tool and method of using the same
09/19/2012EP2499324A2 Device and method for attaching an id-marker to a production pipe
09/19/2012CN202441368U Wireless comprehensive drilling parameter transmission system
09/19/2012CN202441367U Novel well test pressure meter
09/19/2012CN202441366U Data storage and interface circuit for well drilling pressure measuring system
09/19/2012CN202441365U Pressure gauge anti-freezing assembly
09/19/2012CN202441364U Portable depth measuring instrument
09/19/2012CN202441363U Straight inserting structure for nipples of underground instrument while drilling
09/19/2012CN202441362U Load displacement sensor for indicator diagram measurement
09/19/2012CN202441361U Precise positioning device of longhole imaging variable aperture center
09/19/2012CN202441360U Tester for current and pressure of wellhead
09/19/2012CN202441359U Calibration facility of nuclear logging-while-drilling instrument with controllable source
09/19/2012CN202441358U Automatic monitoring device for oil well production difficulties
09/19/2012CN202441357U Connecting pup joint of logger
09/19/2012CN202441356U Disengaging mechanism for deep well equipment
09/19/2012CN202441327U Antitheft device for pressure gauge
09/19/2012CN202441311U Annulus logging wellhead device
09/19/2012CN102686830A Azimuth initialization and calibration of wellbore surveying gyroscopic and inertial instruments by means of an external navigation system
09/19/2012CN102686829A Shock tolerant heat dissipating electronics package
09/19/2012CN102686828A Look ahead advance formation evaluation tool
09/19/2012CN102686826A Downhole progressive pressurization actuated tool and method of using the same
09/19/2012CN102684772A System and method for remote monitoring and fault diagnosis of logging system
09/19/2012CN102681015A Method for dividing stratum structures of mining area
09/19/2012CN102679042A Safety cable clamp
09/19/2012CN102678105A Water distribution pressure meter of double-channel storage type blanking plug
09/19/2012CN102678104A Flow-adjustable single-channel storage type plug water-distributing pressure gauge
09/19/2012CN102678103A Method for determining size of groove of drill collar of while drilling electromagnetic wave electrical resistivity instrument
09/19/2012CN102678102A Array electric imaging logging based reservoir oil-water identification method and system
09/19/2012CN102678101A Voltage/current program-controlled display device of logging system
09/19/2012CN102678100A Remote determinator for well head gas
09/19/2012CN102678099A Stand-wrapped logging upper and lower pulleys
09/19/2012CN102678091A Experimental simulation method for hydrate production and confining pressure loading and thermal insulation integrated system
09/19/2012CN101737031B Novel polar plate of micro-sphere focus logging tool
09/19/2012CN101719612B Docking assembly between rotating and static signal cables in borehole inclinometer
09/19/2012CN101649733B Concentric type integrated test modification water injection technology and device
09/19/2012CN101603420B Method and device for telemetering torque moment of drill stem
09/18/2012US8270251 Acoustic isolator
09/18/2012US8268146 Measurement of hydrogen sulphide and thiols in fluids
09/18/2012US8267172 System and method for determining position within a wellbore
09/18/2012US8267170 Offset barrier wells in subsurface formations
09/18/2012CA2667934C Interface for deploying wireline tools with non-electric string
09/18/2012CA2638285C Tool face sensor method
09/18/2012CA2618120C Self-detection of a modulating carrier and an optimum carrier in a downhole telemetry system
09/18/2012CA2565137C Packer with bypass channels
09/18/2012CA2512164C Data transmission system for a downhole component
09/13/2012WO2012122483A2 Graph to analyze drilling parameters
09/13/2012WO2012122470A1 Method for charcterizing subsurface formations using fluid pressure response during drilling operations
09/13/2012WO2012122468A1 Method for automatic pressure control during drilling including correction for drill string movement
09/13/2012WO2012122336A1 Integrated fiber optic monitoring system for a wellsite and method of using same
09/13/2012WO2012122247A2 A method and apparatus for estimating a downhole fluid property using a miniature integrated circuit spectrometer
09/13/2012WO2012122110A1 Systems and methods for determining fluid mobility in rock samples
09/13/2012WO2012120385A2 Apparatus, system and method for determining at least one downhole parameter of a wellsite
09/13/2012WO2012087864A8 Method of utilizing subterranean formation data for improving treatment operations
09/13/2012WO2012078406A3 Well control operational and training aid
09/13/2012US20120233095 Analyzing Fluid Release Properties of a Subterranean Area of the Earth
09/13/2012US20120229287 Gas monitoring system
09/13/2012US20120227962 Non-intrusive flow indicator
09/13/2012US20120227961 Method for automatic pressure control during drilling including correction for drill string movement
09/13/2012US20120227960 Determination of Coal Bed Natural Gas Production Factors and a System to Determine Same
09/13/2012US20120227483 Electromagnetic viscosity sensor
09/13/2012US20120227481 Smooth Wireline
09/13/2012US20120227480 Apparatus, system and method for determining at least one downhole parameter of a wellsite
09/13/2012DE202012102496U1 Fehlerrobuste Sensorik zum Ermitteln einer räumlichen Beziehung zwischen Anlagenkomponenten unter rauen Bedingungen Error Robust sensor for determining a spatial relationship between system components in harsh conditions
09/13/2012CA2829378A1 Method for charcterizing subsurface formations using fluid pressure response during drilling operations
09/13/2012CA2829092A1 Integrated fiber optic monitoring system for a wellsite and method of using same
09/13/2012CA2827354A1 Systems and methods for determining fluid mobility in rock samples
09/12/2012EP2497897A2 Groundwater profile monitoring system
09/12/2012EP2496974A1 Light based communication port for use on downhole tools
09/12/2012EP2496973A1 Communication port for use on a wellbore measuring instrument
09/12/2012CN202431842U Drive structure of downhole climber
09/12/2012CN202431267U Device for correcting sound-wave emission voltage during acoustic amplitude logging
09/12/2012CN202431266U Wireless well head instrument monitor
09/12/2012CN202431265U Comprehensive verifying device for subsurface equipment of oil field
09/12/2012CN202431264U Depth measuring device of rotary drilling rig
09/12/2012CN202431263U Automatically continuous metering device for pumping well
09/12/2012CN202431262U Exploring tube frame and exploring tube compressing device thereof
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