| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 10/05/2011 | CN202000997U Anti-scraping umbrella type current collector |
| 10/05/2011 | CN202000996U Rope arranging mechanism for logging winch |
| 10/05/2011 | CN202000995U System for testing liquid levels of observation wells to acquire in-situ key parameters of coal bed |
| 10/05/2011 | CN202000994U Double far-field electromagnetic focusing thickness meter |
| 10/05/2011 | CN102206995A System for continuously monitoring temperature and pressure during steam injection and soaking process |
| 10/05/2011 | CN101539009B Foam drainage well bore simulation experiment device for directional well |
| 10/05/2011 | CN101089358B Method and apparatus to facilitate wet or dry control line connection for the downhole environment |
| 10/04/2011 | US8031081 Wireless telemetry between wellbore tools |
| 10/04/2011 | US8028770 Conformal bearing for rock drill bit |
| 10/04/2011 | US8028764 Methods and apparatuses for estimating drill bit condition |
| 10/04/2011 | US8028571 Method and apparatus for pressure measurements in well testing |
| 10/04/2011 | CA2542964C Instrumented internal blowout preventer valve for measuring drill string drilling parameters |
| 10/04/2011 | CA2465028C Borehole sonic data processing method |
| 09/30/2011 | CA2733431A1 Multi-axis fluxgate magnetic sensor |
| 09/29/2011 | WO2011119528A2 Determining the larmor frequency for nmr tools |
| 09/29/2011 | WO2011119318A2 System and method for correction of borehole effects in a neutron porosity measurement |
| 09/29/2011 | WO2011119040A1 Apparatus for registration of photons and ionizing particles with simultaneous directional definition, for each photon or ionizing particle, of a point of origin in a fluid-filled conduit |
| 09/29/2011 | WO2011117355A2 Method and apparatus for determining the nature of a material in a cavity between one inner metal wall and one outer metal wall |
| 09/29/2011 | WO2011084939A3 Pressure release encoding system for communicating downhole information through a wellbore to a surface location |
| 09/29/2011 | WO2011079221A3 Downhole tools with electro-mechanical and electro-hydraulic drives |
| 09/29/2011 | WO2011071412A3 Electrical cased-hole logging method |
| 09/29/2011 | WO2011059959A3 Integrating multiple data source for drilling applications |
| 09/29/2011 | WO2011044023A3 System and method for sensing a liquid level |
| 09/29/2011 | WO2011034783A3 Fluid monitoring and flow characterization |
| 09/29/2011 | WO2010136764A3 Fracture monitoring |
| 09/29/2011 | US20110238220 Apparatus and system for well placement and reservoir characterization |
| 09/29/2011 | US20110234230 Azimuthal At-Bit Resistivity and Geosteering Methods and Systems |
| 09/29/2011 | US20110232907 Laminar phase ring for fluid transport applications |
| 09/29/2011 | US20110232902 Estimating reservoir properties from 4d seismic data |
| 09/29/2011 | US20110232377 Bi-directional flow and distributed temperature sensing in subterranean wells |
| 09/29/2011 | CA2793106A1 System and method for correction of borehole effects in a neutron porosity measurement |
| 09/28/2011 | EP2369389A1 Optical fiber coating to prevent adhesion at high temperatures |
| 09/28/2011 | EP2106494B1 Tractor communication/control and select fire perforating switch |
| 09/28/2011 | CN201991524U 煤矿区煤层气安全集输智能调控系统 CMM safety control system of gathering intelligence |
| 09/28/2011 | CN201991523U 水泥头磁感应胶塞指示器 Cement head magnetic induction stopper indicator |
| 09/28/2011 | CN201991522U 活塞压力传感器 Piston Pressure Sensor |
| 09/28/2011 | CN201991521U 双通道井下压力计 Dual downhole pressure gauge |
| 09/28/2011 | CN201991520U 一种无线随钻测斜仪的压力变送器 A wireless MWD inclinometer pressure transmitter |
| 09/28/2011 | CN201991519U 双管测试井口装置 Double-barreled test wellhead |
| 09/28/2011 | CN201991518U 试井车舱体 Well test vehicle cabin |
| 09/28/2011 | CN201991517U 油井多相连续分测装置 Well consecutive points multiphase measurement device |
| 09/28/2011 | CN201991516U 供热管网检查井补偿器智能泄漏监测及防盗系统 Manhole heating pipe network leak detection and compensation intelligent anti-theft system |
| 09/28/2011 | CN201991505U 井下可控电动调节器 Downhole controllable electric regulator |
| 09/28/2011 | CN201991476U 一种双管柱悬挂井口装置 A dual string hanging wellhead |
| 09/28/2011 | CN102203379A Electrically conductive methods for heating a subsurface formation to convert organic matter into hydrocarbon fluids |
| 09/28/2011 | CN102200010A Logging underground instrument backup control device |
| 09/28/2011 | CN102200009A Method for processing MWD (Measurement While Drilling) underground continuous wave signal |
| 09/28/2011 | CN102200008A Reservoir effectiveness identification method based on electrical imaging logging |
| 09/28/2011 | CN101107423B A method and a system for determining the position of a drill bit |
| 09/27/2011 | US8025109 Method for establishing the positions of a transmitter and detector in a region |
| 09/27/2011 | US8024957 Downhole load cell |
| 09/27/2011 | US8024868 Wall contact caliper instruments for use in a drill string |
| 09/27/2011 | CA2664352C Iterative inversion of data from simultaneous geophysical sources |
| 09/27/2011 | CA2644571C Well jet device and the operating method thereof |
| 09/27/2011 | CA2643242C Temperature sensor using an optical fiber |
| 09/27/2011 | CA2497487C Noise attenuation apparatus for borehole telemetry |
| 09/27/2011 | CA2494871C Drill pipe having an internally coated electrical pathway |
| 09/24/2011 | CA2735073A1 Optical fiber coating to prevent adhesion at high temperatures |
| 09/22/2011 | WO2011115985A1 Method for mitigating leakage currents |
| 09/22/2011 | WO2011115948A1 System and method for measuring borehole conditions, in particular, verification of a final borehole diameter |
| 09/22/2011 | WO2011115805A2 Packer deployed formation sensor |
| 09/22/2011 | WO2011115786A2 Toroid galvanic azimuthal lwd tool |
| 09/22/2011 | WO2011115784A2 Multiple depths of investigation using two pairs of toroid transmitters |
| 09/22/2011 | WO2011115683A2 Multi wavelength dts fiber window with psc fibers |
| 09/22/2011 | WO2011114152A2 Wireless auxiliary monitoring and control system for an underwater installation |
| 09/22/2011 | WO2011097111A3 Method and apparatus for measuring the vertical separation of two stations in a borehole |
| 09/22/2011 | WO2011085286A3 Downhole downlinking system employing a differential pressure transducer |
| 09/22/2011 | WO2011080290A8 Thermography logging tool |
| 09/22/2011 | WO2011079171A3 Shock tolerant heat dissipating electronics package |
| 09/22/2011 | WO2011075280A3 Workflow for petrophysical and geophysical formation evaluation of wireline and lwd log data |
| 09/22/2011 | US20110231149 Boring tool tracking fundamentally based on drill string length, pitch and roll |
| 09/22/2011 | US20110229071 Pressure sensor arrangement using an optical fiber and methodologies for performing an analysis of a subterranean formation |
| 09/22/2011 | US20110227564 Probe for analysis of a string of rods or tubes in a well |
| 09/22/2011 | US20110226531 System and method for measuring borehole conditions, in particular, verification of a final borehole diameter |
| 09/22/2011 | US20110226470 Systems and methods for providing wireless power transmissions and tuning a transmission frequency |
| 09/22/2011 | US20110226469 Virtual flowmeter for a well |
| 09/21/2011 | CN201982089U 一种双伽玛测井仪 A dual gamma logging tool |
| 09/21/2011 | CN201982087U 钻井实时数据通用转发装置 Drilling generic real-time data transfer device |
| 09/21/2011 | CN201982086U Slip ring used for petroleum drilling tool |
| 09/21/2011 | CN201982085U 智能测控流量装置 Intelligent monitoring and control flow device |
| 09/21/2011 | CN201982084U 解决井口测量井口压力的改进装置 Wellhead pressure measurements to solve wellhead improved apparatus |
| 09/21/2011 | CN201982083U 一种随钻地层压力测量仪器 One kind of drilling formation pressure measuring instruments |
| 09/21/2011 | CN201982082U 基于rs485总线的录井数据采集系统装置 Based on logging data acquisition system device rs485 bus |
| 09/21/2011 | CN201982081U 一种抽油机液压载荷摘卸器 One kind of pumping hydraulic load pick Remover |
| 09/21/2011 | CN201982080U 弹片式板簧固定结构 Shrapnel-type leaf springs fixed structure |
| 09/21/2011 | CN201982079U 油田测井车固定装置 Oilfield logging truck fixtures |
| 09/21/2011 | CN201982078U 钻机钻孔精确角度自动定位系统 Drilling rig precise angles automatic positioning system |
| 09/21/2011 | CN201982047U 一种可回收式无线随钻测量仪释放装置 A recyclable wireless MWD release device |
| 09/21/2011 | CN102197319A Data acquisition in an intelligent oil and gas field |
| 09/21/2011 | CN102193155A Communications connection in a subsea well |
| 09/21/2011 | CN102191941A Support method for sharply inclined ultra-thick coal seam |
| 09/21/2011 | CN102191934A Adaptive pressure balanced air pressure wave signaling structure |
| 09/21/2011 | CN102191933A Process for measuring and controlling produced gas of coal bed gas well |
| 09/20/2011 | US8020633 Simultaneous drilling and open hole wireline logging for drilling rigs |
| 09/20/2011 | US8020632 Method and system for wellbore communication |
| 09/20/2011 | US8020616 Determining a status in a wellbore based on acoustic events detected by an optical fiber mechanism |
| 09/20/2011 | US8020437 Method and apparatus to quantify fluid sample quality |
| 09/20/2011 | US8020436 Permanently installed in-well fiber optic accelerometer-based sensing apparatus and associated method |
| 09/20/2011 | CA2635448C System and method for obtaining and using downhole data during well control operations |
| 09/20/2011 | CA2598801C Method for optimizing the location of a secondary cutting structure component in a drill string |