| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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| 01/16/2014 | US20140014329 Landing indicator for logging tools |
| 01/16/2014 | US20140014319 Hydraulic screen table apparatus |
| 01/16/2014 | US20140013837 Systems and methods for measuring forces acting on a downhole tool |
| 01/16/2014 | CA2821127A1 Real-time casing detection using tilted and crossed antenna measurement |
| 01/15/2014 | EP2685290A2 Surface instrumentation configuration for a drilling rig operation |
| 01/15/2014 | EP2684079A1 Method and apparatus for initialization of a wellbore survey tool via a remote reference source |
| 01/15/2014 | EP2684078A1 Methods and systems of estimating formation parameters |
| 01/15/2014 | CN203394522U High-speed slurry pulse generator |
| 01/15/2014 | CN203394521U Suspended drill collar unit device for test of three-parameter logging-while-drilling tool |
| 01/15/2014 | CN203394520U Control system for realizing switching of pushing and measurement in through casing resistivity logging |
| 01/15/2014 | CN203394519U Cleanable thermometer pocket device |
| 01/15/2014 | CN203394518U Pipe column for installing monitoring instrument in fracturing construction |
| 01/15/2014 | CN203394517U Instrument for monitoring temperature and pressure of steam driving production well |
| 01/15/2014 | CN203394516U Integrated underground routine work and pressure test device |
| 01/15/2014 | CN203394515U Rapid connection device of liquid level tester of oil well |
| 01/15/2014 | CN203394514U Small well deflection direction logger |
| 01/15/2014 | CN203394513U Pressure-control damping waterpower pushing device |
| 01/15/2014 | CN203394512U Decentralized wellhead pump detecting device |
| 01/15/2014 | CN203394511U Combined mounting bracket for drilling fluid inlet sensors |
| 01/15/2014 | CN203394510U Combined mounting bracket for drilling fluid outlet sensors |
| 01/15/2014 | CN203394509U Flow detection system for comprehensive logging instrument |
| 01/15/2014 | CN203394508U Full-automatic multi-parameter acquisition system in water pumping test |
| 01/15/2014 | CN203394507U Oil field oil well and water injection well working condition monitoring display system based on Internet of Things |
| 01/15/2014 | CN203394506U Integrated portable tester of oil pumping unit |
| 01/15/2014 | CN203394505U Down-hole working condition corrosion and scaling speed tester |
| 01/15/2014 | CN203394504U Novel petroleum well logging perforation cable clamping tool |
| 01/15/2014 | CN203394503U Numerical control multi-ported valve for oil field metering station |
| 01/15/2014 | CN203394502U Hydraulic balance metering device for internal floating roof |
| 01/15/2014 | CN203394501U Digital control system for sub-driver combination logging probe |
| 01/15/2014 | CN203394500U Perforation ignition transmitting device |
| 01/15/2014 | CN203394499U Guide cone release mechanism of well logging instrument |
| 01/15/2014 | CN203394489U Intelligent temperature control apparatus used for fireflood-assisted gravity drainage |
| 01/15/2014 | CN203394449U Water-finding tubular column for monitoring level-section production flow and water content at vertical well section of horizontal well |
| 01/15/2014 | CN203394419U Multifunctional rapid connection device of wellhead |
| 01/15/2014 | CN203394369U Coiled tubing ground sealing device |
| 01/15/2014 | CN203394362U Cased hole completion multi-section pressing crack horizontal well mechanical water finding pipe column |
| 01/15/2014 | CN203394350U Permanent magnet short joint for accurate collision prevention of adjacent wells |
| 01/15/2014 | CN103518123A Integrity monitoring of conduits |
| 01/15/2014 | CN103518034A Inground drill string housing and methods for signal coupling |
| 01/15/2014 | CN103518033A Downhole tool |
| 01/15/2014 | CN103510950A Complex-structural well formation flow and internal flow coupled flow experiment system |
| 01/15/2014 | CN103510949A Directional drill hole profile measurement and detection system and method |
| 01/15/2014 | CN103510947A Beach bar sandstone microfacies recognition mode establishment method and application of beach bar sandstone microfacies recognition mode in microfacies recognition |
| 01/15/2014 | CN103510945A Multifunctional downhole intelligent actuator under control of superlong wave and pressure wave encoding |
| 01/15/2014 | CN103510944A High-temperature and high-pressure plugging / sticking preventing simulation evaluation device and method |
| 01/15/2014 | CN103510943A Instrument for measuring initial velocity of gas discharged from deep drill hole for coal mine outburst prediction |
| 01/15/2014 | CN103510942A Direct-reading water injection flow measuring and adjusting instrument |
| 01/15/2014 | CN103510941A Gas-lift oil exploitation distribution metering device |
| 01/15/2014 | CN103510940A Mechanical producing well working condition comprehensive diagnostic analysis method and device |
| 01/15/2014 | CN103510939A Flow measuring nipple and water retention meter of horizontal liquid producing well |
| 01/15/2014 | CN103510938A Thick oil thermal-recovery underground steam dryness optical fiber monitoring instrument |
| 01/15/2014 | CN103510931A Method for simulating vertical well steam driving |
| 01/15/2014 | CN103510922A Injection-production distribution measuring structure for gas storage |
| 01/15/2014 | CN103510917A Pumping unit automatic control method and system based on on-line dynamic liquid level monitoring |
| 01/15/2014 | CN103510910A System and method for strength maintenance of high-temperature resistant and high-pressure resistant foam cement paste |
| 01/15/2014 | CN102388202B Device for rotary moving gas and oil separating measuring system |
| 01/15/2014 | CN102330550B Drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells |
| 01/15/2014 | CN102242628B Multilayered oil well sand prevention simulation pressure testing device |
| 01/14/2014 | US8630817 Self centering bore measurement unit |
| 01/14/2014 | US8629782 System and method for using dual telemetry |
| 01/14/2014 | US8627902 Estimating drill cutting origination depth using marking agents |
| 01/14/2014 | US8627887 In situ recovery from a hydrocarbon containing formation |
| 01/14/2014 | US8627715 Imaging subsurface formations while wellbore drilling using beam steering for improved image resolution |
| 01/14/2014 | CA2726969C Systems and methods using a continuously variable transmission to control one or more system components |
| 01/14/2014 | CA2613604C Multi-carrier transmission process and system in a difficult environment with optimisation of emission power |
| 01/09/2014 | WO2014008145A1 Downhole data communication and logging system |
| 01/09/2014 | WO2014008115A1 Method for reducing stick-slip during wellbore drilling |
| 01/09/2014 | WO2014007923A1 Power generating communication device |
| 01/09/2014 | WO2014007796A1 Angular position sensor with magnetometer |
| 01/09/2014 | WO2014007790A1 Measurement and evaluation of tubing strings while lowering into a wellbore |
| 01/09/2014 | WO2014007645A1 Monitoring of multilayer reservoirs |
| 01/09/2014 | WO2014006036A2 Methods and apparatus for determining fluid characteristics |
| 01/09/2014 | WO2014005393A1 Testing and adjusting linkage system and operational process therefor |
| 01/09/2014 | WO2014005188A1 A method of, and a system for, drilling to a position relative to a geological boundary |
| 01/09/2014 | WO2014005187A1 Laser alignment device for use with a drill rig |
| 01/09/2014 | WO2013141971A3 Casing collar locator with wireless telemetry support |
| 01/09/2014 | US20140011466 Wireless communications in a drilling operations environment |
| 01/09/2014 | US20140009302 Wellhead water level sensor |
| 01/09/2014 | US20140008125 System and method for kicking-off a rotary steerable |
| 01/09/2014 | US20140008083 Remote Operation of Setting Tools for Liner Hangers |
| 01/09/2014 | US20140008060 Flexibility of downhole fluid analyzer pump module |
| 01/09/2014 | US20140008059 Downhole Data Communication and Logging System |
| 01/09/2014 | US20140007668 High Temperature Downhole Gauge System |
| 01/09/2014 | US20140007646 Downhole instrument calibration during formation survey |
| 01/09/2014 | CA2878237A1 Laser alignment device for use with a drill rig |
| 01/09/2014 | CA2878205A1 Power generating communication device |
| 01/09/2014 | CA2877925A1 Method for reducing stick-slip during wellbore drilling |
| 01/09/2014 | CA2877687A1 Angular position sensor with magnetometer |
| 01/08/2014 | EP2682562A1 Systems and methods for monitoring a wellbore and actuating a downhole device |
| 01/08/2014 | EP2681602A2 Fiber optic sealing apparatus |
| 01/08/2014 | EP2681414A1 Systems and methods for determining fluid mobility in rock samples |
| 01/08/2014 | EP2681413A1 Sneak path eliminator for diode multiplexed control of downhole well tools |
| 01/08/2014 | EP2681401A2 Tubular component for drill stem capable of being cabled, and method for mounting a cable in said component |
| 01/08/2014 | CN203383814U Micro type Ba-137m releaser used for double-tracer flow well logging |
| 01/08/2014 | CN203383813U Coal underground gasification layer temperature measuring device |
| 01/08/2014 | CN203383812U Electric water injection well seal examining instrument |
| 01/08/2014 | CN203383811U Piston-type high-pressure-resistant gas percussion mechanism |
| 01/08/2014 | CN203383810U Radioactive logger probe vibration damping structure and probe vibration damping rubber ring |
| 01/08/2014 | CN203383809U Oil-gas separation measuring system easy to maintain and provided with wireless remote control function |
| 01/08/2014 | CN203383808U Vehicle-mounted movable oil-gas separation metering system |