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)
10/2012
10/04/2012US20120247198 Modular apparatus and method for making measurements in boreholes
10/04/2012CA2831718A1 Downhole pressure compensating device
10/04/2012CA2831649A1 Service panel
10/04/2012CA2831075A1 Lag calculation with caving correction in open hole
10/04/2012CA2827428A1 Apparatus and method for formation resistivity measurements in oil-based mud using a floating reference signal
10/04/2012CA2827219A1 Formation resistivity measurements using phase controlled currents
10/04/2012CA2827217A1 Formation resistivity measurements using multiple controlled modes
10/03/2012EP2505773A1 Downhole pressure compensating device
10/03/2012EP2505769A1 Service panel
10/03/2012CN202474149U Downhole testing device filter for oil-gas field development
10/03/2012CN202467831U Memory type wellhead intelligent pressure transmitter
10/03/2012CN202467830U Data acquisition and transmission device for near-bit measuring instrument
10/03/2012CN202467829U Integrated mechanical water detection, water plugging and channeling detection tubular column
10/03/2012CN202467828U Laser drilling and locating instrument
10/03/2012CN202467827U Underground stratification direct reading tester
10/03/2012CN202467826U Mud sump liquid level observation device for drilling construction
10/03/2012CN202467825U Depth detection device for rotary drilling rig
10/03/2012CN202467824U Intelligent testing and regulating non-contact depth metering device for underground cable
10/03/2012CN202467823U Automatic-reducing guide mounting device for ground stress hollow inclusion
10/03/2012CN202467822U Acquisition and analysis instrument for electric parameter working condition of oil well
10/03/2012CN202467821U Online corrosion monitoring device for wellhead equipment
10/03/2012CN202467820U Wellhead parameter extracting device of oil-water well
10/03/2012CN202467819U Water spraying quantity determinator for mine roof drill hole
10/03/2012CN202467818U Dynamic simulator for operation of oil wellbore
10/03/2012CN202467817U Indoor simulation device for rock drillability on air drilling condition
10/03/2012CN202467816U Lead mold for detecting casing damaged well
10/03/2012CN202467815U Well logging butt-joint tool for tower-type horizontal well
10/03/2012CN202467814U Drilling cuttings metering device
10/03/2012CN202467813U Measuring electrode pushing mechanism for through casing resistivity logging instrument
10/03/2012CN202467812U Rigid weighted lever
10/03/2012CN202467803U Assembling-type metering separator
10/03/2012CN202467761U Novel Christmas tree oil pipe cap with safety gate device
10/03/2012CN202467737U Wellhead apparatus for annulus logging
10/03/2012CN202467736U Titanium alloy injection-prevention pipe
10/03/2012CN202467685U Connection pipe for high-pressure water injection flow meter
10/03/2012CN202467645U Blowout preventer test platform
10/03/2012CN102713547A System and method for measurement incorporating a crystal oscillator
10/03/2012CN102713141A Electric hydraulic interface for modular downhole tool
10/03/2012CN102713140A Remote drilling and completions management
10/03/2012CN102713128A Rotary Steerable Tool Employing A Timed Connection
10/03/2012CN102707394A Oil field detection optical cable
10/03/2012CN102704923A Underground physical simulation test device for horizontal well
10/03/2012CN102704922A Supercritical carbon dioxide carrying sand flow mechanism researching experiment device
10/03/2012CN102704921A Measuring device for electrical resistivity of electromagnetic waves while drilling and measuring method thereof
10/03/2012CN102704920A Underground drilling rig insulating short section of electromagnetic measurement while drilling system
10/03/2012CN102704919A Frequency variable signal de-noising method and device for rotating magnetic field interwell distance measurement
10/03/2012CN102704918A Connecting device for well bore signal transmission
10/03/2012CN102704917A Device and method for flow-state simulated experiment of fracturing fluid in horizontal well section
10/03/2012CN102704916A Remote control automatic liquid level monitoring device
10/03/2012CN102704915A Calibration console and calibration method of inclinometer while drilling
10/03/2012CN102704914A Supporting system for field construction of well cementation
10/03/2012CN102704913A Experimental device and method for simulating exhaustion production of gas-containing thickened oil by utilizing tapered sand filling pipe
10/03/2012CN102704912A Determining method for crushing work ratio coefficient of roller bit
10/03/2012CN102704911A Multilateral well experimental model, system and sand filling method
10/03/2012CN102704910A Underground drilling monitoring system for coal mine
10/03/2012CN102704900A Subsection water injection tubular column for shallow measurement in vertical well section of horizontal well
10/03/2012CN102704884A Intelligentized multi-functional well head device
10/03/2012CN101405474B Method and apparatus for locating a plug within the well
10/02/2012CA2563790C A method and apparatus for a high resolution downhole spectrometer
10/02/2012CA2499638C Borehole conductivity profiler
09/2012
09/27/2012WO2012129389A2 Measurement pretest drawdown methods and apparatus
09/27/2012WO2012129214A2 Flow activated sensor assembly
09/27/2012WO2012129058A2 Correction of deep azimuthal resistivity measurements for bending
09/27/2012WO2012128872A2 Sonde with integral pressure sensor and method
09/27/2012WO2012128867A2 Apparatus and method for filtering data influenced by a downhole pump
09/27/2012WO2012094086A3 Method and apparatus for monitoring vibration using fiber optic sensors
09/27/2012WO2012078726A3 Power allocation to downhole tools in a bottomhole assembly
09/27/2012WO2012066323A3 High temperature downhole gauge system
09/27/2012WO2012058435A4 Drilling control system and method
09/27/2012WO2012049506A4 Apparatus and methods for orienting, stabilising or stably operating a logging tool
09/27/2012US20120241218 Sonde with integral pressure sensor and method
09/27/2012US20120241173 Pipe conveyed extendable well logging tool with protector
09/27/2012US20120241172 Pipe conveyed extendable well logging tool
09/27/2012US20120241167 Flow activated sensor assembly
09/27/2012CA2830909A1 Method to separate compressional and shear waves during seismic monitoring by utilizing linear and rotational multi-component sensors in arrays of shallow monitoring wells
09/27/2012CA2830789A1 Measurement pretest drawdown methods and apparatus
09/27/2012CA2827413A1 Correction of deep azimuthal resistivity measurements for bending
09/26/2012EP2502238A2 Electrode configuration for downhole nuclear radiation generator
09/26/2012EP2501899A1 System for analysing gas from strata being drilled under high mud flows
09/26/2012CN202451146U High-temperature heat collecting instrument
09/26/2012CN202451145U Pressure and temperature monitoring system based on optical fiber sensing for coalbed gas well
09/26/2012CN202451144U Dynamic simulation experimental device and simulation system for bottom water coning in bottom water reservoir exploitation
09/26/2012CN202451143U Monitoring system for oil field production pressure
09/26/2012CN202451142U Subsurface environment simulator
09/26/2012CN202451141U Direct-reading/ storage-type gyro inclinometer
09/26/2012CN202451140U Temperature compensation device for accelerometer and fluxgate of underground directional measurement instrument
09/26/2012CN202451139U Damping system of gyro inclinometer
09/26/2012CN202451138U Ultra-deep hole measuring device for geological exploration
09/26/2012CN202451137U Tension headstall with double weak protection
09/26/2012CN202451136U Vibration attenuation device for oil well logger
09/26/2012CN202451135U Telescopic rotation support for checking mine gas
09/26/2012CN202451134U Subsurface equipment connector applied to drill collar connection
09/26/2012CN202451133U Cementing quality logger for gas storage well
09/26/2012CN202451132U Automatic control metering device for oil well
09/26/2012CN202451131U Self-positioning orientation gamma measuring system
09/26/2012CN202451130U Adjustable-temperature high-pressure CO2 gas metering device
09/26/2012CN202451099U Drilling tool salvaging device
09/26/2012CN102691496A Safety control method for well logging system
09/26/2012CN101709638B Novel optical fiber temperature and pressure sensor
09/26/2012CN101629487B Stratified flow rate test instrument for CO2 stratified injection well
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