| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 02/21/2007 | CN2871840Y Bi-sensor seal-testing pressure gauge of packer |
| 02/21/2007 | CN2871821Y Blowout preventer on hole top for wireline logging |
| 02/20/2007 | US7180826 Measurement while drilling bi-directional pulser operating in a near laminar annular flow channel |
| 02/20/2007 | US7180825 Downhole telemetry system for wired tubing |
| 02/20/2007 | US7178626 Method of seismic evaluation of subterranean strata |
| 02/20/2007 | US7178608 While drilling system and method |
| 02/20/2007 | US7178607 While drilling system and method |
| 02/20/2007 | US7178600 Apparatus and methods for utilizing a downhole deployment valve |
| 02/20/2007 | US7178590 Well fluids and methods of use in subterranean formations |
| 02/20/2007 | US7178392 Determining the pressure of formation fluid in earth formations surrounding a borehole |
| 02/20/2007 | CA2533843C Method of distinguishing between installing different sucker rods |
| 02/20/2007 | CA2533832C Method of distinguishing the raising and lowering of tubing and sucker rods |
| 02/20/2007 | CA2452551C Protector system for fiber optic system components in subsurface applications |
| 02/15/2007 | WO2007019319A1 Bi-directional drill string telemetry system for measurement and drilling control |
| 02/15/2007 | WO2007019292A2 Surface communication apparatus and method for use with string telemetry |
| 02/15/2007 | WO2007018916A2 Method and apparatus for using a data telemetry system over multi-conductor wirelines |
| 02/15/2007 | WO2007018844A2 Spontaneous superficial fluid recovery from hydrocarbon formations |
| 02/15/2007 | WO2007017128A1 High temperature wellbore monitoring method and apparatus |
| 02/15/2007 | WO2006108000A3 Wireless communications in a drilling operations environment |
| 02/15/2007 | WO2006071670A3 Impact sensing system and methods |
| 02/15/2007 | US20070038375 Diagnosis of formation characteristics in wells |
| 02/15/2007 | US20070036550 Communications apparatus |
| 02/15/2007 | US20070035413 System for managing borehole information |
| 02/15/2007 | US20070034374 Apparatus and Method To Detect A Signal Associated With A Component |
| 02/15/2007 | US20070034372 Internal release connector and method |
| 02/15/2007 | DE102006036997A1 Kommunikationsvorrichtung Communication device |
| 02/15/2007 | CA2757380A1 Surface communication apparatus and method for use with drill string telemetry |
| 02/15/2007 | CA2616835A1 Well modeling associated with extraction of hydrocarbons from subsurface formations |
| 02/15/2007 | CA2616444A1 High temperature wellbore monitoring method and apparatus |
| 02/14/2007 | EP1436488B1 Fluid skin friction sensing device and method |
| 02/14/2007 | CN2869318Y Oil field water injection well manometer |
| 02/14/2007 | CN2869317Y Intelligent layer oil production test tubular column |
| 02/14/2007 | CN2869316Y Separater metering device |
| 02/14/2007 | CN2869295Y Releaseable counterweight sealing device |
| 02/14/2007 | CN1914406A Method of determining a fluid inflow profile of wellbore |
| 02/14/2007 | CN1912656A Anti-symmetrized electromagnetic measurements |
| 02/13/2007 | US7176690 Flux plane locating in an underground drilling system |
| 02/13/2007 | CA2389145C Multiphase flow measurement system |
| 02/13/2007 | CA2364339C An apparatus, system, and method for detecting and reimpressing electrical charge disturbances on a drill-pipe |
| 02/13/2007 | CA2205746C A method and apparatus for optically discriminating between the phases of a three-phase fluid |
| 02/13/2007 | CA2184856C Fluid holdup tool and flow meter for deviated wells |
| 02/08/2007 | WO2007016687A1 Interface and method for wellbore telemetry system |
| 02/08/2007 | WO2007015992A1 Compensation for tool disposition in lwd resistivity measurements |
| 02/08/2007 | WO2007015646A1 Antenna device for seismic surveys |
| 02/08/2007 | WO2007015087A1 Method of determining features of downhole apparatus |
| 02/08/2007 | WO2007015053A1 System and method of flow assurance in a well |
| 02/08/2007 | WO2007014446A1 An orientation sensing apparatus and a method for determining an orientation |
| 02/08/2007 | US20070032957 High Temperature Wellbore Monitoring Method and Apparatus |
| 02/08/2007 | US20070030762 Borehole telemetry system |
| 02/08/2007 | US20070030006 Position and orientation locator/monitor |
| 02/08/2007 | US20070029113 Methods and system for designing and/or selecting drilling equipment with desired drill bit steerability |
| 02/08/2007 | US20070029112 Bidirectional drill string telemetry for measuring and drilling control |
| 02/08/2007 | US20070029083 Reflection coefficient measurement for water-based mud resistivity imaging |
| 02/08/2007 | CA2787134A1 Orientation sensing apparatus and a method for determining an orientation |
| 02/08/2007 | CA2786724A1 Orientation sensing apparatus and a method for determining an orientation |
| 02/07/2007 | EP1749143A1 Device for examining rotor drilled holes |
| 02/07/2007 | CN1910338A Annulus plugging detection using a pressure transmitter in gas-lift oil production |
| 02/07/2007 | CN1908371A Slip casting diffusion test set |
| 02/07/2007 | CN1908370A Optical fiber grating temperature-pressure sensor for high-pressure flow liquid testing |
| 02/07/2007 | CN1908368A Declinator used inertia measurement set integration device |
| 02/06/2007 | US7173542 Data relay for casing mounted sensors, actuators and generators |
| 02/06/2007 | US7173239 Method and apparatus for downhole quantification of methane using near infrared spectroscopy |
| 02/06/2007 | US7172038 Well system |
| 02/06/2007 | US7172035 Sonde housing and method of manufacture |
| 02/06/2007 | US7172020 Oil production optimization and enhanced recovery method and apparatus for oil fields with high gas-to-oil ratio |
| 02/06/2007 | US7171851 Temperature compensated strain measurement |
| 02/06/2007 | CA2410124C Method and apparatus for providing plural flow paths at a lateral junction |
| 02/06/2007 | CA2357921C Method and apparatus for prediction control in drilling dynamics using neural networks |
| 02/06/2007 | CA2296464C Drilling system with means for anchoring in the borehole |
| 02/01/2007 | WO2007014111A2 Downhole tool position sensing system |
| 02/01/2007 | WO2006052621A3 Multiscale multidimensional well log data inversion and deep formation imaging method |
| 02/01/2007 | WO2005119298A8 Method for generating a 3d earth model |
| 02/01/2007 | WO2005079224A3 Hydraulic impulse generator and frequency sweep mechanism for borehole applications |
| 02/01/2007 | US20070023185 Downhole Tool with Integrated Circuit |
| 02/01/2007 | US20070023184 Well product recovery process |
| 01/31/2007 | EP1748151A1 Method and apparatus for transmitting or receiving information between a downhole equipment and surface |
| 01/31/2007 | EP1747347A2 Downhole probe assembly |
| 01/31/2007 | CN2864091Y Multifunctional current logging instrumentation |
| 01/31/2007 | CN2864090Y Spindle type magnetic flexibility free wired drilling instrument plug |
| 01/31/2007 | CN2864089Y Under balance drilling inducing flow gas-metering apparatus |
| 01/31/2007 | CN2864086Y Normal temperature water injection device for oil field well mouth |
| 01/31/2007 | CN1906379A Measuring device and drilling device for deep drillings |
| 01/31/2007 | CN1906378A Measuring fluid volumes in a container using pressure |
| 01/31/2007 | CN1904310A Optical fiber pressure and temperature biparameter sensor |
| 01/31/2007 | CN1904309A Under well pressure measuring device |
| 01/30/2007 | US7171309 Downhole tool controller using autocorrelation of command sequences |
| 01/30/2007 | US7170424 Oil well casting electrical power pick-off points |
| 01/30/2007 | US7170423 Electromagnetic MWD telemetry system incorporating a current sensing transformer |
| 01/30/2007 | US7168510 Electrical transmission apparatus through rotating tubular members |
| 01/30/2007 | US7168508 Logging-while-coring method and apparatus |
| 01/30/2007 | US7168507 Recalibration of downhole sensors |
| 01/30/2007 | US7168506 On-bit, analog multiplexer for transmission of multi-channel drilling information |
| 01/30/2007 | US7168487 Methods, apparatus, and systems for obtaining formation information utilizing sensors attached to a casing in a wellbore |
| 01/30/2007 | US7168311 Fiber optic monitoring of flow inside and outside a tube downhole |
| 01/30/2007 | US7168310 Accuracy of shaly sand formation evaluation |
| 01/30/2007 | CA2455732C Method for biosolid disposal and methane generation |
| 01/30/2007 | CA2217056C A surface controlled wellbore directional steering tool |
| 01/29/2007 | CA2552025A1 Mud pulser |
| 01/28/2007 | CA2553497A1 Mixed wireless and cable data acquisition network |
| 01/25/2007 | WO2007011338A1 Method and associated system for setting downhole control pressure |