| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 07/27/2011 | CN201908617U Floating torsion transmitter |
| 07/27/2011 | CN201908595U Safety type tool orientator capable of reducing and shearing |
| 07/27/2011 | CN201908594U Device for delivering testing instrument of oil well |
| 07/27/2011 | CN1644874B Mechanical wireless drilling inclinometers |
| 07/27/2011 | CN102137981A Drilling tool and method for widening and simultaneously monitoring the diameter of wells and the properties of the fluid |
| 07/27/2011 | CN102134994A Stratum data processing method based on electrical resistivity of bedrock oil deposit oil water layer |
| 07/27/2011 | CN102134993A Simulation experiment device for controlling production of coal bed methane vertical well |
| 07/27/2011 | CN102134992A Method and device for high-speed wired duplexing information communication between well and ground |
| 07/27/2011 | CN102134991A Method and device for high-speed wireless duplexing information communication between inside of slurry drilling well and ground surface |
| 07/27/2011 | CN102134990A Cement head magnetic induction rubber plug indicator |
| 07/27/2011 | CN102134989A Method for point measurement of well by gyroscopic inclinometer |
| 07/27/2011 | CN102134988A Method for measuring dryness of downhole steam in thermal recovery horizontal well |
| 07/27/2011 | CN102134967A Construction method of consolidating horizontal directional drilling hole by grouting coal seam baseboard |
| 07/27/2011 | CN101769143B Skid-mounted device for switching and monitoring process flows of water dissolving method mining |
| 07/27/2011 | CA2691250A1 Method and apparatus for correcting data points acquired during well drilling |
| 07/26/2011 | US7984755 Electrical cased well-logging method |
| 07/26/2011 | CA2627996C Sealed esp motor system |
| 07/26/2011 | CA2462774C Process and device for generating signals which can be transmitted in a well |
| 07/21/2011 | WO2011088478A1 Bearing contact pressure reduction in well tools |
| 07/21/2011 | WO2011087607A1 Pressure controlled tester and collet therefor |
| 07/21/2011 | WO2011087400A1 Wireless power and/or data transmission system for downhole equipment monitoring and/or control |
| 07/21/2011 | WO2011044427A3 Automated sidewall coring |
| 07/21/2011 | WO2011041347A3 Apparatus and method for downhole electromagnetic measurement while drilling |
| 07/21/2011 | WO2011038866A3 Boring element of a ground boring device |
| 07/21/2011 | WO2011032080A3 Borehole force measurement |
| 07/21/2011 | WO2009018420A3 Apparatus and method for communicating data between a well and the surface using pressure pulses |
| 07/21/2011 | US20110178730 Flexible Pipe Fatigue Monitoring Below the Bend Stiffener of a Flexible Riser |
| 07/21/2011 | US20110178713 Cable installation apparatus |
| 07/21/2011 | US20110176387 Bi-directional wireless acoustic telemetry methods and systems for communicating data along a pipe |
| 07/21/2011 | US20110175899 Systems and methods for displaying logging data |
| 07/21/2011 | US20110174537 Method and System for Forming a Non-Circular Borehole |
| 07/21/2011 | US20110174483 Apparatus for gripping a tubular on a drilling rig |
| 07/21/2011 | CA2787044A1 Improved efpi sensor |
| 07/21/2011 | CA2787043A1 Bearing contact pressure reduction in well tools |
| 07/20/2011 | EP2344910A1 Data acquisition in an intelligent oil and gas field |
| 07/20/2011 | CN201902207U Discharge and mining control simulation experiment device for coalbed gas vertical well |
| 07/20/2011 | CN201902206U Leakage stopping simulation evaluation device for well drilling in stress-sensitive formation |
| 07/20/2011 | CN201902205U Phonoscope for oil and gas well liquid level depth measuring device |
| 07/20/2011 | CN201902204U Wellhead connector for oil and gas well liquid level depth measuring device |
| 07/20/2011 | CN201902203U Exploring tube component and drilling inclinometer comprising same |
| 07/20/2011 | CN201902194U Gas well choke manifold |
| 07/20/2011 | CN201902175U Controllable releasing pup joint |
| 07/20/2011 | CN102132005A Drill bit with weight and torque sensors |
| 07/20/2011 | CN102128034A Methane safe control method for tunneling methane stratum-containing tunnel shield |
| 07/20/2011 | CN102128029A Double-interface ultrasonic detection imaging method for cased well |
| 07/20/2011 | CN102128028A Ultrasonic signal inversion method for evaluating cement and formation interface cementing quality |
| 07/20/2011 | CN102128027A Infrasonic wave generator for testing liquid level of oil well |
| 07/20/2011 | CN102128026A Formation pressure measuring device while drilling |
| 07/20/2011 | CN102128025A Method for determining drilling fluid density in salt-gypsum layer deflection |
| 07/20/2011 | CN102128024A Shock absorption connector for shock detection device in well |
| 07/20/2011 | CN102128018A Electric double-guide flow allocating device |
| 07/19/2011 | US7983113 Method and apparatus for downlink communication using dynamic threshold values for detecting transmitted signals |
| 07/19/2011 | US7982632 Sensor system and method of communicating data between a downhole device on a remote location |
| 07/19/2011 | US7980327 Sub-surface imaging using antenna array for determing optimal oil drilling site |
| 07/19/2011 | US7980306 Methods, systems and apparatus for coiled tubing testing |
| 07/19/2011 | US7980305 Ram BOP position sensor |
| 07/14/2011 | WO2011085296A2 Rotary steerable tool employing a timed connection |
| 07/14/2011 | WO2011085286A2 Downhole downlinking system employing a differential pressure transducer |
| 07/14/2011 | WO2011085215A2 Wirelessly actuated hydrostatic set module |
| 07/14/2011 | WO2011085059A2 Rotating drilling tool |
| 07/14/2011 | WO2011084939A2 Pressure release encoding system for communicating downhole information through a wellbore to a surface location |
| 07/14/2011 | WO2011084828A2 Drop/pump memory through-casing measurement logging tools |
| 07/14/2011 | WO2011084656A1 Estimation of reservoir permeability |
| 07/14/2011 | WO2011084185A1 Monitoring fluid movement in a formation |
| 07/14/2011 | WO2011082870A1 Determining methane content of a bottom sample |
| 07/14/2011 | WO2011082678A1 Metering and separating device for natural gas |
| 07/14/2011 | WO2011063023A9 Determination of oil saturation in reservoir rock using paramagnetic nanoparticles and magnetic field |
| 07/14/2011 | WO2011046859A3 Casing rotary steerable system for drilling |
| 07/14/2011 | WO2011035131A3 Tdem forward focusing system for downhole use |
| 07/14/2011 | WO2011031696A3 Drill bits and methods of drilling curved boreholes |
| 07/14/2011 | US20110172976 Robust Well Trajectory Planning |
| 07/14/2011 | US20110172923 Device and method of determining rate of penetration and rate of rotation |
| 07/14/2011 | US20110170320 Transmitting electric power into a bore hole |
| 07/14/2011 | US20110168446 Method and apparatus for transmitting or receiving information between a down-hole eqipment and surface |
| 07/14/2011 | US20110168445 Downhole Downlinking System Employing a Differential Pressure Transducer |
| 07/14/2011 | US20110168391 Method for dynamically assessing petroleum reservoir competency and increasing production and recovery through asymmetric analysis of performance metrics |
| 07/14/2011 | US20110168390 Downhole electronics with pressure transfer medium |
| 07/14/2011 | US20110168389 Surface Controlled Downhole Shut-In Valve |
| 07/14/2011 | US20110167910 Apparatus and method for detecting a property of a fluid |
| 07/14/2011 | US20110167901 Methods to characterize sag in fluids |
| 07/14/2011 | DE112009002144T5 Elektrische Übertragung zwischen rotierenden und nicht rotierenden Elementen Electric transmission between rotating and non-rotating elements |
| 07/14/2011 | CA2792145A1 Rotating drilling tool |
| 07/14/2011 | CA2786826A1 Metering and separating device for natural gas |
| 07/14/2011 | CA2786784A1 Surface communication device and method for downhole tool |
| 07/14/2011 | CA2786546A1 Estimation of reservoir permeability |
| 07/14/2011 | CA2786430A1 Rotary steerable tool employing a timed connection |
| 07/13/2011 | EP2343893A1 Camera manipulating device for video inspection system |
| 07/13/2011 | EP2343434A1 Use of micro-electro-mechanical systems (MEMS) in well treatments |
| 07/13/2011 | CN201896614U Underground mark probing device |
| 07/13/2011 | CN201896613U Gas pressure measuring device |
| 07/13/2011 | CN201896612U Downhole temperature sensor |
| 07/13/2011 | CN201896611U Outburst prevention drilling rig |
| 07/13/2011 | CN201896610U Outburst prevention drilling rig for coal mine |
| 07/13/2011 | CN201896609U Novel underground wireless and mobile safety data collection device |
| 07/13/2011 | CN201896608U Environment-friendly fluid density logging instrument |
| 07/13/2011 | CN201896579U Reciprocating outburst prevention drilling rig |
| 07/13/2011 | CN201896578U Outburst prevention drilling rig |
| 07/13/2011 | CN102121379A Surge and wave prevention laser liquid level monitor |
| 07/13/2011 | CN102121378A Optical fiber sensor for measuring underground pressure |
| 07/13/2011 | CN102121377A Pressure-while-drilling measuring device and measurement method thereof |