| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 08/28/2013 | CN203161213U Signal transmission device for well drilling instruments |
| 08/28/2013 | CN203161212U Diaphragm balanced type fluid temperature sensor |
| 08/28/2013 | CN203161211U Drilling liquid level monitoring and alarming device |
| 08/28/2013 | CN203161210U Inclination survey equipment provided with adapters |
| 08/28/2013 | CN203161209U Gamma multi-term detection cement density logger |
| 08/28/2013 | CN203161208U Automatic control device of density instrument calibrations |
| 08/28/2013 | CN203161207U Field portable push and receive device for density instrument |
| 08/28/2013 | CN203161206U Device for detecting pressure balancing bin of four-arm caliper logging instrument |
| 08/28/2013 | CN203161205U Hard electrode capable of being maintained |
| 08/28/2013 | CN203161204U Device for measuring drilling gas discharge speed in simulated drilling process |
| 08/28/2013 | CN203161203U Triaxial quadrature coil system |
| 08/28/2013 | CN103270244A System and method for moniitoring strain and pressure |
| 08/28/2013 | CN103266888A System and method for visualization fracturing simulation experiment |
| 08/28/2013 | CN103266887A Instrument for measuring deep resistivity through wireless short-distance transmission signals and application method thereof |
| 08/28/2013 | CN103266886A While drilling data relay communication method for gas drilling |
| 08/28/2013 | CN103266885A Communication relaying nipple while drilling for oil and gas well |
| 08/28/2013 | CN103266884A EM-MWD relay transmission system |
| 08/28/2013 | CN103266883A Water exploration method and device through relative density in oil well |
| 08/28/2013 | CN103266882A Pulse magnetic moment device for passive depth measurement |
| 08/28/2013 | CN103266881A Method for predicting yield of compact hypotonic gas field multistage fracturing horizontal well |
| 08/28/2013 | CN103266880A Oil well load measurement method |
| 08/28/2013 | CN103266879A Layered steam injection measuring system and flow recorder |
| 08/28/2013 | CN103266867A Horizontal well water exploration valve |
| 08/28/2013 | CN102943620B Pressure-controlled drilling method based on drilling annulus wellbore multi-phase flow computing |
| 08/28/2013 | CN102257094B Improvement in enhanced oil recovery by polymer without supplementary equipment or product |
| 08/28/2013 | CN102134990B Cement head magnetic induction rubber plug indicator |
| 08/28/2013 | CN102057130B Method and device for core drilling |
| 08/28/2013 | CN101675209B Method and apparatus for measuring parameter within the well with plug |
| 08/28/2013 | CN101525994B Measuring and monitoring system for oil wellhead |
| 08/27/2013 | US8517112 System and method for subsea control and monitoring |
| 08/27/2013 | US8517096 Methods and apparatus for measuring return flow in a well |
| 08/27/2013 | US8517095 Method of using hexose oxidases to create hydrogen peroxide in aqueous well treatment fluids |
| 08/27/2013 | US8517094 Detecting and correcting unintended fluid flow between subterranean zones |
| 08/27/2013 | CA2611067C Fluid characterization from acoustic logging data |
| 08/24/2013 | CA2807110A1 External pressure testing of gas lift valve in side-pocket mandrel |
| 08/22/2013 | WO2013123293A1 Inversion-based calibration of downhole electromagnetic tools |
| 08/22/2013 | WO2013122985A1 Apparatus and method for protecting devices downhole |
| 08/22/2013 | WO2013122962A1 Non-uniform echo train decimation |
| 08/22/2013 | WO2013122787A1 Apparatus and method for positioning and orienting a borehole tool |
| 08/22/2013 | WO2013122747A1 Method for determining a permeability or mobility of a radial flow response of a reservoir |
| 08/22/2013 | WO2013122560A1 Method and apparatus for remotely controlling downhole tools using untethered mobile devices |
| 08/22/2013 | WO2013045882A3 Fibre optic cable deployment, particularly for downhole distributed sensing |
| 08/22/2013 | WO2012096826A3 Flow profile modeling for wells |
| 08/22/2013 | US20130215718 Device for generating pressure pulses in flowing fluid and method for the same |
| 08/22/2013 | US20130214933 Monitoring of Undesirable Fluid Ingress Into Subsea Control Modules |
| 08/22/2013 | US20130213711 Apparatus and method for protecting devices downhole |
| 08/22/2013 | US20130213647 Surface Wellbore Operating Equipment Utilizing MEMS Sensors |
| 08/22/2013 | US20130213646 Apparatus and methods for wellbore completion |
| 08/22/2013 | US20130213645 Downhole Formation Testing and Sampling Apparatus Having a Deployment Packer |
| 08/22/2013 | US20130213644 Method for signalling a downhole device in a well |
| 08/22/2013 | US20130213640 Wireless drill string disconnect |
| 08/22/2013 | US20130213129 Measurement of downhole component stress and surface conditions |
| 08/22/2013 | US20130213128 Multiple distributed force measurements |
| 08/22/2013 | CA2858051A1 Method and apparatus for remotely controlling downhole tools using untethered mobile devices |
| 08/21/2013 | EP2629122A2 Directional resistivity measurements for azimuthal proximity detection of bed boundaries |
| 08/21/2013 | EP2628895A1 Method and system for material degradation detection in an object by analyzing acoustic vibration data |
| 08/21/2013 | EP2628028A2 Nuclear magnetic resonance tool with external magnets |
| 08/21/2013 | EP2627866A2 System and method for operating monitoring elements and single use elements with a common cable |
| 08/21/2013 | EP2627862A1 Method and apparatus for a high side orienting sub for multi-lateral installations |
| 08/21/2013 | CN203145998U Mine gas pumping and draining hole packer |
| 08/21/2013 | CN203145929U Mechanical underground diameter-detecting probe |
| 08/21/2013 | CN203145928U Oil well remote wireless monitoring system |
| 08/21/2013 | CN203145927U High-temperature pulse logging thermometer |
| 08/21/2013 | CN203145926U Device for rapidly measuring coal layer gas pressure in downward super-deep drill hole |
| 08/21/2013 | CN203145925U Device for quickly measuring coal seam gas pressure by upward remote drilling |
| 08/21/2013 | CN203145924U Horizontal drill hole camera shooting auxiliary propelling device |
| 08/21/2013 | CN203145923U Clamping-preventing device of camera in hole |
| 08/21/2013 | CN203145922U Logging instrument butt joint auxiliary tool |
| 08/21/2013 | CN203145921U Automatic control device for density logging instrument scales |
| 08/21/2013 | CN203145920U Mobile simple metering device |
| 08/21/2013 | CN203145919U Setting probe pedestal for formation tester |
| 08/21/2013 | CN203145918U Experimental apparatus for simulating heavy oil steam huff-and-puff recovery and model system thereof |
| 08/21/2013 | CN203145917U Bridge type concentric direct-reading measuring and adjusting instrument |
| 08/21/2013 | CN203145916U Multipoint calibration shielding device of nuclear magnetic resonance logger |
| 08/21/2013 | CN103261583A Detecting and correcting unintended fluid flow between subterranean zones |
| 08/21/2013 | CN103261582A Method for automatic control and positioning of autonomous downhole tools |
| 08/21/2013 | CN103261581A High temperature downhole gauge system |
| 08/21/2013 | CN103261580A Underground drilling apparatus |
| 08/21/2013 | CN103256044A Sound wave signal processing device while drilling |
| 08/21/2013 | CN103256043A Borehole diameter measuring apparatus |
| 08/21/2013 | CN103256042A Switching mechanism of borehole diameter measuring apparatus and borehole diameter measuring apparatus with switching mechanism |
| 08/21/2013 | CN103256041A Hole diameter instrument |
| 08/21/2013 | CN103256040A Implantable thickened oil well shakeout monitoring device |
| 08/21/2013 | CN103256039A Track recorder of underground coal mine |
| 08/21/2013 | CN103256038A Method for monitoring using condition of underground drill |
| 08/21/2013 | CN103256037A Working parameter measurement device for oil drilling positive displacement motors |
| 08/21/2013 | CN103256022A Flow automatic measuring and control device |
| 08/21/2013 | CN103256003A Overturning type wellhead testing device |
| 08/21/2013 | CN102174884B Directional gyro inclinometer spot measurement device |
| 08/21/2013 | CN102094643B Di-gamma logging instrument |
| 08/21/2013 | CN102094627B Well-head hydraulic signal generating device and operating method thereof |
| 08/21/2013 | CN101446191B Drilling well control parameter intelligent monitoring system |
| 08/20/2013 | US8514657 Generating fluid telemetry |
| 08/20/2013 | US8511404 Drilling tool, apparatus and method for underreaming and simultaneously monitoring and controlling wellbore diameter |
| 08/20/2013 | US8511400 Apparatus and method for acoustic measurements while using a coring tool |
| 08/20/2013 | US8511389 System and method for inductive signal and power transfer from ROV to in riser tools |
| 08/20/2013 | US8511382 Method for determining filtration properties of rocks |
| 08/20/2013 | US8511379 Downhole X-ray source fluid identification system and method |
| 08/20/2013 | US8511372 Method and system for accessing subterranean deposits from the surface |
| 08/20/2013 | CA2747236C Shape-acceleration measurement device and method |