| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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| 05/01/2012 | US8169337 Downhole communications module |
| 05/01/2012 | US8167038 System and method for deflection compensation in power drive system for connection of tubulars |
| 05/01/2012 | CA2532618C Bi-directional rotary steerable system actuator assembly and method |
| 04/28/2012 | CA2756469A1 System and method for individual control of tools in a subterranean completion application |
| 04/27/2012 | CA2756544A1 Method and system for evaluating sensor data from a well service rig |
| 04/26/2012 | WO2012054496A2 Erosion tracer and monitoring system and methodology |
| 04/26/2012 | WO2012054487A2 Production estimation in subterranean formations |
| 04/26/2012 | WO2012054396A2 Hardened data recording system for drilling rigs and other drilling equipment |
| 04/26/2012 | WO2012054383A2 Tracer identification of downhole tool actuation |
| 04/26/2012 | WO2012054342A2 Submersible pump system |
| 04/26/2012 | WO2012054298A2 Extending data retention of a data storage device downhole |
| 04/26/2012 | WO2012054295A1 Clustered wellhead trunkline protection and testing system with esp speed controller and emergency isolation valve |
| 04/26/2012 | WO2012054146A2 System and method for automatic detection and analysis of borehole breakouts from images and the automatic generation of alerts |
| 04/26/2012 | WO2012052120A2 Method and system for determining the position of an apparatus |
| 04/26/2012 | WO2012030926A3 Drill bit with adjustable side force |
| 04/26/2012 | WO2012027492A3 Reservoir pressure monitoring |
| 04/26/2012 | WO2012027476A4 Leak detection and early warning system for capped or abandoned subsea wellheads |
| 04/26/2012 | WO2012024474A3 System and method for estimating directional characteristics based on bending moment measurements |
| 04/26/2012 | WO2012024121A3 Acoustic waveform stacking using azimuthal and/or standoff binning |
| 04/26/2012 | WO2011163491A8 Apparatus and method for remote actuation of a downhole assembly |
| 04/26/2012 | WO2011098767A3 System and method for determining position within a wellbore |
| 04/26/2012 | US20120098675 Verfahren zum lokalisieren eines bohrgeräts einer erdbohrvorrichtung method for localizing a boring device of an earth boring apparatus |
| 04/26/2012 | US20120097452 Downhole Tool Deployment Measurement Method and Apparatus |
| 04/26/2012 | US20120097451 Electrical controller for anti-stall tools for downhole drilling assemblies |
| 04/26/2012 | US20120097388 System And Method For Detecting Pressure In A Subterranean Environment |
| 04/26/2012 | US20120096935 Downhole sensor tool with a sealed sensor outsert |
| 04/26/2012 | US20120096922 Sand detector calibration |
| 04/26/2012 | CA2815204A1 Monitoring using distributed acoustic sensing (das) technology |
| 04/26/2012 | CA2814934A1 Hardened data recording system for drilling rigs and other drilling equipment |
| 04/26/2012 | CA2814494A1 Erosion tracer and monitoring system and methodology |
| 04/26/2012 | CA2810721A1 Clustered wellhead trunkline protection and testing system with esp speed controller and emergency isolation valve |
| 04/25/2012 | EP2444799A1 Sand detector calibration |
| 04/25/2012 | EP2443315A2 Apparatus and method for determining corrected weight-n-bit |
| 04/25/2012 | EP2132409B1 Apparatus, system, and method for determining injected fluid vertical placement |
| 04/25/2012 | CN202202866U Depth gauge for drill bit |
| 04/25/2012 | CN202202865U 垂直钻井工具安装近钻头井斜测量短节的壳体结构 Vertical drilling tool is installed near the drill hole inclination measuring short section of the shell structure |
| 04/25/2012 | CN202202864U 一种煤矿用有线随钻测斜仪 One kind of coal with wired drilling inclinometer |
| 04/25/2012 | CN202202863U 具有防震抗撞击性能的探头套 Shockproof anti-impact performance of the probe sets |
| 04/25/2012 | CN202202862U 探测器探头的防震抗撞防护体 Anti-shock protection body hit the detector probe |
| 04/25/2012 | CN202202861U 油气水三相在线计量装置 Gas-water three-phase line metering device |
| 04/25/2012 | CN202202860U 同位素示踪剂安全注入器 Isotopic tracer injection device security |
| 04/25/2012 | CN202202859U 同位素示踪多排安全注入器 Isotope tracer injector multi-row Safety |
| 04/25/2012 | CN202202858U 一种低噪声前置放大器厚膜电路 A low-noise preamplifier Houmodianlu |
| 04/25/2012 | CN202202844U 配有可调节旁通阀的柱塞工具 With an adjustable bypass valve plunger tool |
| 04/25/2012 | CN202201666U 试井绞车液压排丝机构 Well test hydraulic winch wire agency row |
| 04/25/2012 | CN102425411A 连续波泥浆脉冲发生器 Continuous wave mud pulse generator |
| 04/25/2012 | CN102425410A 一种随钻测量超声波数据传输方法及装置 One kind of ultrasonic measurement while drilling data transmission method and apparatus |
| 04/25/2012 | CN102425409A 一种井斜和工具面测量装置及垂直钻井设备 A well oblique and tools for surface measurement devices and vertical drilling equipment |
| 04/25/2012 | CN102425408A 一种井下单向锁定装置 A downhole-way locking device |
| 04/25/2012 | CN102425407A 无线油气井信息采集器 Wireless wells Information Acquisition |
| 04/25/2012 | CN102425406A 注浆法测定煤层瓦斯压力过程中的一种泄压管 Determination of coal seam gas pressure grouting process of a pressure relief pipe |
| 04/25/2012 | CN102425405A 一种油田偏心配水井分层压力测试方法 One kind of oil wells layered eccentric stress testing methods |
| 04/25/2012 | CN102425404A 油井分层测压、分层产能测试的方法 Well layered manometry, layered production test method |
| 04/25/2012 | CN102425403A 一种确定同轴式双空心抽油杆下入深度的方法 A coaxial double down into the depths of the method to determine the hollow rod |
| 04/25/2012 | CN102425402A 一种自定位式方位伽玛测量系统 A self-positioning azimuth gamma measurement system |
| 04/25/2012 | CN102425373A 超深孔定向钻机 Ultra-deep hole directional drilling |
| 04/25/2012 | CN101460871B 套管井电测井方法 Cased-hole electric logging methods |
| 04/25/2012 | CN101182769B 储油层样本监管链 Reservoir sample chain of custody |
| 04/25/2012 | CN101100940B 一种阵列化声信号检测系统及其工程应用 One kind of array of acoustic signal detection system and its engineering application |
| 04/24/2012 | US8165825 Method for electromagnetically measuring physical parameters of a pipe |
| 04/24/2012 | US8164980 Methods and apparatuses for data collection and communication in drill string components |
| 04/24/2012 | US8164477 Joint channel coding and modulation for improved performance of telemetry systems |
| 04/24/2012 | US8164475 Downhole communication |
| 04/24/2012 | US8163242 Portable gas monitor |
| 04/24/2012 | US8162077 Drill bit with weight and torque sensors |
| 04/24/2012 | US8162076 System and method for reducing the borehole gap for downhole formation testing sensors |
| 04/24/2012 | US8162051 Downhole tool delivery system with self activating perforation gun |
| 04/24/2012 | US8162050 Use of micro-electro-mechanical systems (MEMS) in well treatments |
| 04/24/2012 | US8162049 Injection-backflow technique for measuring fracture surface area adjacent to a wellbore |
| 04/24/2012 | CA2554700C Acoustic logging tool sleeve |
| 04/24/2012 | CA2537189C Borehole telemetry system |
| 04/24/2012 | CA2525129C On-line compositional allocation |
| 04/24/2012 | CA2476515C Electromagnetic borehole telemetry system incorporating a conductive borehole tubular |
| 04/24/2012 | CA2472421C Shape-acceleration measurement device and method |
| 04/19/2012 | WO2012051196A2 Lift-gas optimization with choke control |
| 04/19/2012 | WO2012051190A2 Fluid pressure-viscosity analyzer for downhole fluid sampling pressure drop rate setting |
| 04/19/2012 | WO2012051189A2 Antenna apparatus and method for insulating |
| 04/19/2012 | WO2012051186A2 System and method for operating monitoring elements and single use elements with a common cable |
| 04/19/2012 | WO2012051184A2 Predicting downhole formation volumetric sand production using grain-scale rock models |
| 04/19/2012 | WO2012049506A2 Apparatus and methods for orienting, stabilising or stably operating a logging tool |
| 04/19/2012 | WO2012049449A1 Method and apparatus for a high side orienting sub for multi-lateral installations |
| 04/19/2012 | WO2012027168A3 Imaging of formation structure ahead of the drill-bit |
| 04/19/2012 | WO2012021393A3 Low frequency formation shear slowness from drilling noise derived quadrupole array data |
| 04/19/2012 | WO2012003329A3 Systems and methods for compressing data and controlling data compression in borehole communication |
| 04/19/2012 | WO2011159803A3 Look-ahead seismic while drilling |
| 04/19/2012 | WO2011156469A3 Method for treating and sealing piezoelectric tuning forks |
| 04/19/2012 | US20120094701 Communication Arrangement For Transmission Of Communication Signals Along A Pipe Line |
| 04/19/2012 | US20120093193 Electronic apparatus of a downhole tool |
| 04/19/2012 | US20120091510 Semiconductor device and manufacturing method thereof, mask for semiconductor manufacture, and optical proximity correction method |
| 04/19/2012 | US20120090837 Acoustic Transducers With Dynamic Frequency Range |
| 04/19/2012 | US20120090836 Arrangement and method for sending and/or sealing cement at a liner hanger |
| 04/19/2012 | US20120090834 Method For Seismic Interpretation Using Seismic Texture Attributes |
| 04/19/2012 | US20120090833 Water injection systems and methods |
| 04/19/2012 | US20120090827 Non-contact capacitive datalink for a downhole assembly |
| 04/19/2012 | DE102010048574A1 Verfahren und System zur Ermittlung der Position einer Vorrichtung A method and system for determining the position of a device |
| 04/19/2012 | CA2814569A1 Method and apparatus for a high side orienting sub for multi-lateral installations |
| 04/19/2012 | CA2814390A1 Apparatus and methods for orienting, stabilising or stably operating a logging tool |
| 04/19/2012 | CA2814370A1 Lift-gas optimization with choke control |
| 04/18/2012 | EP2440745A2 Sensor assembly |
| 04/18/2012 | EP2440744A1 An injection-backflow technique for measuring fracture surface area adjacent to a wellbore |