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)
09/2010
09/08/2010CN101824981A Test string for stimulating produced liquid section of pumping unit
09/08/2010CN101112964B Drum winder used for perpendicularity measurement of drill hole groove wall
09/08/2010CN101070756B Petroleum well-drilling loss-zone position detection method and apparatus
09/08/2010CN100999992B Method for transferring steam driven at thickened oil steam taking-in and sending-out later period post
09/07/2010US7789171 Device and method for measuring a property in a downhole apparatus
09/07/2010CA2591485C Two sensor impedance estimation for uplink telemetry signals
09/07/2010CA2468782C Methods and apparatus for well completion installation monitoring and control
09/07/2010CA2444776C Drilling system with expandable sleeve
09/02/2010WO2010099484A2 System and method for wellbore monitoring
09/02/2010WO2010098741A1 Well gauging system and method
09/02/2010WO2010097264A1 Device for measuring temperature in electromagnetic fields
09/02/2010WO2010068870A3 Apparatus and method for evaluating downhole fluids
09/02/2010WO2010062574A3 Using an acoustic ping and sonic velocity to control an artificial lift device
09/02/2010US20100219980 Method and system for performing operations and for improving production in wells
09/02/2010US20100218994 Borehole drilling control system, method and apparatus
09/02/2010US20100218941 Determining the Use of Stimulation Treatments Based on High Process Zone Stress
09/02/2010DE102009010289A1 Vorrichtung zur Temperaturmessung in elektromagnetischen Feldern, Verwendung dieser Vorrichtung sowie zugehörige Messanordnung Device for temperature measurement in electromagnetic fields, the use of this device and associated measuring arrangement
09/02/2010CA2753420A1 System and method for wellbore monitoring
09/02/2010CA2753234A1 Device for measuring temperature in electromagnetic fields
09/01/2010EP2224092A2 Wired pipe with wireless joint transceiver
09/01/2010EP1583886B1 Isolated electrical connection in a drill string
09/01/2010CN201568051U Bearing seal nipple
09/01/2010CN201568050U Signal transmission device
09/01/2010CN201568049U Automatic pressure test device of oil-production wellhead equipment
09/01/2010CN201568048U Constant-pressure sealing check device
09/01/2010CN201568047U Integrated drilling slurry parameter monitoring system
09/01/2010CN201568046U Water wave reducer
09/01/2010CN201568045U Ground test device of vertical drilling system
09/01/2010CN201568044U Multifunctional pot wireless metering device
09/01/2010CN201568043U Underground multifunctional corrosion rate detection device
09/01/2010CN201568009U Downhole pressure gauge blanking plug capable of releasing pressure
09/01/2010CN1573013B Method for characterizing underground geological structure
09/01/2010CN101819280A Logging instrument three-dimensional data interpolation method
09/01/2010CN101818642A Sound-producing device for measuring oil well liquid level depth
09/01/2010CN101818641A Method and apparatus for data communication with an underground instrument package
09/01/2010CN101818640A Fully distributed device and method for monitoring underground working temperature of oil-water well based on Raman scattered light time-domain reflectometer
08/2010
08/31/2010US7787525 Method and apparatus for transmission of well-bore data on multiple carrier frequencies
08/31/2010US7786732 Apparatus for monitoring a positional relationship between a boring tool and an inground line
08/31/2010US7784565 Top drive systems with main shaft deflecting sensing
08/31/2010US7784544 Method of treating a subterranean formation using a rheology model for fluid optimization
08/31/2010US7784539 Hydrocarbon recovery testing method
08/31/2010US7784538 Using an acoustic ping and sonic velocity to control an artificial lift device
08/31/2010US7784350 Downhole transducer with adjacent heater
08/31/2010US7784339 Perforation logging tool and method
08/31/2010US7784338 Low mass sensor for free point tool
08/31/2010CA2606627C Bidirectional telemetry apparatus and methods for wellbore operations
08/31/2010CA2604297C Downhole position locating device with fluid metering feature
08/31/2010CA2446357C Device for producing of electric energy and of signal transmitting pressure pulses
08/26/2010WO2010096802A2 Method for accentuating signal from ahead of the bit
08/26/2010WO2010096666A2 Method and apparatus for measuring pore pressure beyond the casing
08/26/2010WO2010096653A2 Multi-station analysis of magnetic surveys
08/26/2010WO2010096417A2 Swellable material activation and monitoring in a subterranean well
08/26/2010WO2010096346A2 Drilling scorecard
08/26/2010WO2010096206A2 Apparatus and method for controlling the connection and disconnection speed of downhole connectors
08/26/2010WO2010095014A1 Methods and apparatus to measure fluid flow rates
08/26/2010WO2010094060A1 Modular core orientation system
08/26/2010WO2010068397A3 Method and apparatus for directional well logging
08/26/2010WO2010059621A3 Method and apparatus for calibrating and correcting for coherent noise in casing detection
08/26/2010WO2010046099A9 Method for determining the wear of a force-loaded linkage of an earthwork device
08/26/2010WO2007018613A3 Apparatus for downhole power supply with shunt regulation
08/26/2010US20100217530 Drilling scorecard
08/26/2010US20100213942 Wired pipe with wireless joint transceiver
08/26/2010US20100212963 Measurement while drilling apparatus and method of using the same
08/26/2010US20100212962 Assembly for drilling and logging, method for drilling and logging and device for electro pulse drilling
08/26/2010US20100212892 Methods of formulating a cement composition
08/26/2010US20100212891 Swellable Material Activation and Monitoring in a Subterranean Well
08/26/2010US20100212890 Imaging apparatus and methods of making and using same
08/26/2010US20100212889 Methods and apparatus to measure fluid flow rates
08/26/2010US20100212396 Downhole sensor apparatus and method
08/26/2010DE102008048964B4 Verfahren und Vorrichtung zur Erkennung der Spiegelteufe in einem Bohrloch Method and apparatus for detection of a borehole in Spiegelteufe
08/26/2010CA2752618A1 Multi-station analysis of magnetic surveys
08/26/2010CA2752390A1 Modular core orientation system
08/26/2010CA2751473A1 Swellable material activation and monitoring in a subterranean well
08/26/2010CA2751029A1 Drilling scorecard
08/25/2010EP2221449A2 A subsea well control system
08/25/2010EP2220519A2 Methods and apparatus for telemetry and power delivery
08/25/2010EP2220339A1 Monitoring, controlling and enhancing processes while stimulating a fluid-filled borehole
08/25/2010EP1792052B1 Integrated magnetic ranging tool
08/25/2010CN201560757U Mud pulse generator
08/25/2010CN201560756U Center cabling type directional water delivery device
08/25/2010CN201560755U Rotation pipe nipple for eliminating instrument string torsion
08/25/2010CN101813508A Floater type inclined tube (wall) water level observation platform
08/25/2010CN101812983A Coal mine drifting laser orientation instrument bracket and installation method thereof
08/25/2010CN101445211B Anti-running linked braking system of logging winch
08/25/2010CN101095239B High temperature electronic device
08/24/2010US7782709 Multi-physics inversion processing to predict pore pressure ahead of the drill bit
08/24/2010US7782060 Integrated electrode resistivity and EM telemetry tool
08/24/2010US7779912 Well tool having magnetically coupled position sensor
08/24/2010US7779684 Apparatus and methods to perform downhole measurements associated with subterranean formation evaluation
08/24/2010US7779683 Tracking fluid displacement along a wellbore using real time temperature measurements
08/19/2010WO2010093920A2 Bi-directional flow and distributed temperature sensing in subterranean wells
08/19/2010WO2010093691A1 Autochoke system
08/19/2010WO2010093649A1 Control line hybrid junction assembly
08/19/2010WO2010093626A2 Apparatus and process for wellbore characterization
08/19/2010WO2010093277A1 Method and apparatus for monitoring of esp
08/19/2010WO2010091471A1 Downhole tool housing
08/19/2010WO2010054353A3 Bit based formation evaluation and drill bit and drill string analysis using an acoustic sensor
08/19/2010US20100208552 Acoustic telemetry stacked-ring wave delay isolator system and method
08/19/2010US20100207783 Subsea Well Control System
08/19/2010US20100207019 Optical monitoring of fluid flow
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