| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 03/21/2012 | CN102383779A Double-layer gob drilling exploration method |
| 03/21/2012 | CN102383777A Measuring and controlling device used for rotary steering drilling system and measuring and controlling method utilizing same |
| 03/21/2012 | CN102383755A Valve condition monitoring |
| 03/21/2012 | CN102383730A Skewing guide mechanism of borehole track control tool |
| 03/21/2012 | CN101343997B Directional tool of horizontal long drill hole |
| 03/20/2012 | US8138943 Measurement while drilling pulser with turbine power generation unit |
| 03/20/2012 | US8136610 Torsional resonance prevention |
| 03/20/2012 | US8136597 Method and system for the extinction of an underwater well for the extraction of hydrocarbons under uncontrolled fluid discharge conditions |
| 03/20/2012 | US8136591 Method and system for using wireline configurable wellbore instruments with a wired pipe string |
| 03/20/2012 | US8136395 Systems and methods for well data analysis |
| 03/20/2012 | CA2621403C Wireless communications associated with a wellbore |
| 03/20/2012 | CA2503113C Method and apparatus for isolating and testing zones during reverse circulation drilling |
| 03/15/2012 | WO2012034001A1 A method for finding and re-entering a lateral bore in a multi-lateral well |
| 03/15/2012 | WO2012033905A2 Simultaneous ultrasonic cross-correlation and transit time measurements for multiphase flow rate analysis |
| 03/15/2012 | WO2012033880A1 System and method for controlling fluid pumps to achieve desired levels |
| 03/15/2012 | WO2012033684A2 Image enhancement for resistivity features in oil-based mud image |
| 03/15/2012 | WO2012033486A1 Downhole piston accumulator system |
| 03/15/2012 | US20120063267 Well Monitoring by Means of Distributed Sensing Means |
| 03/15/2012 | US20120061143 Guide Wire for Ranging and Subsurface Broadcast Telemetry |
| 03/15/2012 | US20120061141 Method for finding and re-entering a lateral bore in a multi-lateral well |
| 03/15/2012 | US20120061091 Riser Lifecycle Management System, Program Product, and Related Methods |
| 03/15/2012 | CA2811058A1 A method for finding and re-entering a lateral bore in a multi-lateral well |
| 03/14/2012 | EP2427788A2 Apparatus and method for predicting properties of earth formations |
| 03/14/2012 | EP2427787A2 Directional resistivity imaging using harmonic representations |
| 03/14/2012 | EP2427748A1 Method for sampling and analysis of production from a subsea well for measuring salinity of produced water and also volumetric ratio between liquid fractions |
| 03/14/2012 | EP2427735A2 Multi-phase fluid measurement apparatus and method |
| 03/14/2012 | EP2427633A1 Method, system, use of the system and reinforcement member for rock reinforcement |
| 03/14/2012 | EP2229504B1 Oilfield area network communication system and method |
| 03/14/2012 | EP1563255B1 Method for determining a track of a geographical trajectory |
| 03/14/2012 | CN202165074U 钻孔漏气部位检测装置 Drilling leak detection device parts |
| 03/14/2012 | CN202165073U 一种三参数测量探头 A three-parameter measuring probe |
| 03/14/2012 | CN202165072U 旋挖钻机用测斜仪固定装置 Rotary drilling rig with inclinometer fixtures |
| 03/14/2012 | CN202165071U 井下方位角、倾角测定仪 Downhole azimuth, inclination tester |
| 03/14/2012 | CN202165070U 一体化保温瓶 Integrated thermos |
| 03/14/2012 | CN202165069U 一种用于车辆的控制台 A console for a vehicle |
| 03/14/2012 | CN202165068U 一种全自动脱气机 A fully automatic degasser |
| 03/14/2012 | CN102373923A Reservoir stratum identification method |
| 03/14/2012 | CN102373922A Well periphery ultrasonic imaging downhole tool |
| 03/14/2012 | CN102373919A Experimental apparatus for evaluating coalbed methane cave well completion |
| 03/14/2012 | CN102373918A Oil well batch production simulation experimental facility for low-permeability reservoir |
| 03/14/2012 | CN102373917A Anti-collision system for monitoring casing pipe on wellhead |
| 03/14/2012 | CN102373916A Externally-powered measurement while drilling method and device based on current loop |
| 03/13/2012 | US8135541 Wellbore tracking |
| 03/13/2012 | US8134476 Apparatus and methods for self-powered communication and sensor network |
| 03/13/2012 | US8132622 Surface instrumentation configuration for drilling rig operation |
| 03/13/2012 | US8132621 Multi-zone formation evaluation systems and methods |
| 03/13/2012 | US8132453 Method for analysis of pressure response in underground formations |
| 03/13/2012 | CA2599097C Downlink based on pump noise |
| 03/13/2012 | CA2476521C Electromagnetic mwd telemetry system incorporating a current sensing transformer |
| 03/13/2012 | CA2400093C Horizontal directional drilling in wells |
| 03/08/2012 | WO2012031202A2 A resonance method for measuring the electroacoustic constant and permeability of rock formations |
| 03/08/2012 | WO2012031179A1 Elemental concentration and water saturation determination using neutron-induced activation gamma radiation |
| 03/08/2012 | WO2012030926A2 Drill bit with adjustable side force |
| 03/08/2012 | WO2012030768A2 Dtem with short spacing for deep, ahead of the drill bit measurements |
| 03/08/2012 | WO2012030416A1 Detecting and correcting unintended fluid flow between subterranean zones |
| 03/08/2012 | WO2012028848A2 Systems and methods for monitoring a parameter of a subterranean formation using swellable materials |
| 03/08/2012 | WO2012028259A1 An anti-locking device for use with an arm system for logging a wellbore and method for using same |
| 03/08/2012 | WO2012028258A1 An arm system for logging a wellbore and method for using same |
| 03/08/2012 | US20120057432 Well Monitoring by Means of Distributed Sensing Means |
| 03/08/2012 | US20120055711 Wall contact caliper instruments for use in a drill string |
| 03/08/2012 | US20120055710 Drill String Tubular with a Detection System Mounted Therein |
| 03/08/2012 | US20120055668 Solvents and compositions for treating hydrocarbon-bearing formations |
| 03/08/2012 | US20120055243 Acoustic Transducers Using Quantum Tunneling Composite Active Elements |
| 03/08/2012 | CA2810332A1 Systems and methods for monitoring a parameter of a subterranean formation using swellable materials |
| 03/08/2012 | CA2809968A1 Detecting and correcting unintended fluid flow between subterranean zones |
| 03/07/2012 | EP2425279A2 Method for determining wettability of an oil reservoir |
| 03/07/2012 | EP2425096A1 Methods and apparatus to optically determine velocities of downhole fluids |
| 03/07/2012 | CN202157801U Device for counting depth of continuous oil pipe |
| 03/07/2012 | CN202157800U 一种一体化无线随钻测斜仪 An integrated wireless MWD inclinometer |
| 03/07/2012 | CN202157799U 一种用于保护钻具内部随钻测量装置的隔振器 A drill is used to protect internal MWD isolator device |
| 03/07/2012 | CN202157798U 压力表保温护套 Gauge insulation jacket |
| 03/07/2012 | CN202157797U Exploratory well measurement control device |
| 03/07/2012 | CN202157322U 超大扭矩螺旋钻孔灌注桩机 Bored large torque screw machine |
| 03/07/2012 | CN101377127B Method for testing horizontal well oil conduit transportation under pumping state |
| 03/06/2012 | US8130117 Drill bit with an electrically isolated transmitter |
| 03/06/2012 | US8127868 Apparatus and methods for drilling a wellbore using casing |
| 03/06/2012 | US8127841 Method and system for monitoring the incursion of particulate material into a well casing within hydrocarbon bearing formations including gas hydrates |
| 03/06/2012 | US8127833 Methods and apparatus for harvesting potential energy downhole |
| 03/06/2012 | CA2435221C Method and system for enhanced access to a subterranean zone |
| 03/01/2012 | WO2012027633A2 Mud pulse telemetry noise reduction method |
| 03/01/2012 | WO2012027630A2 Apparatus and method for microresistivity imaging in nonconductive drilling fluid |
| 03/01/2012 | WO2012027492A2 Reservoir pressure monitoring |
| 03/01/2012 | WO2012027476A1 Leak detection and early warning system for capped or abandoned subsea wellheads |
| 03/01/2012 | WO2012027168A2 Imaging of formation structure ahead of the drill-bit |
| 03/01/2012 | WO2012027110A1 Method and apparatus for creating a planar cavern |
| 03/01/2012 | WO2012027105A1 Method of acoustic ranging |
| 03/01/2012 | WO2012026921A1 Method and system of determining elemental content of an earth formation |
| 03/01/2012 | WO2012026825A1 Well logging tool |
| 03/01/2012 | WO2012006327A3 Fiber support arrangement and method |
| 03/01/2012 | WO2012006093A3 Fluid sampling tool |
| 03/01/2012 | WO2011163491A3 Apparatus and method for remote actuation of a downhole assembly |
| 03/01/2012 | WO2011140214A3 Method and apparatus for neutron logging using a position sensitive neutron detector |
| 03/01/2012 | WO2011110914A3 Use of general bayesian networks in oilfield operations |
| 03/01/2012 | WO2011100435A3 Automated drilling fluid analyzer |
| 03/01/2012 | US20120053838 Downhole sample analysis method |
| 03/01/2012 | US20120051186 Valve condition monitoring |
| 03/01/2012 | US20120049625 Power limiting control for multiple drilling rig tools |
| 03/01/2012 | US20120048618 Method for determining uncertainty with projected wellbore position and attitude |
| 03/01/2012 | US20120048542 Anti-locking device for use with an arm system for logging a wellbore and method for using same |
| 03/01/2012 | US20120048541 Arm system for logging a wellbore and method for using same |