Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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08/11/2010 | CN101798917A Multifunctional dynamic pollution evaluation device of coalbed drilling fluid |
08/10/2010 | US7773841 Optical turnaround |
08/10/2010 | US7772849 Tracking positions of personnel, vehicles, and inanimate objects |
08/10/2010 | US7772166 Conductive cement formulation and application for use in well |
08/10/2010 | US7770663 Apparatus for making quality control measurements while drilling |
08/10/2010 | US7770639 Method for placing downhole tools in a wellbore |
08/06/2010 | CA2692209A1 Latch position indicator system and method |
08/05/2010 | WO2010088679A2 Bottom hole assembly for wellbore operations |
08/05/2010 | WO2010088542A1 Downhole pressure barrier and method for communication lines |
08/05/2010 | WO2010088439A2 System and method for matching lithology responses of downhole tools having different source energies |
08/05/2010 | WO2010088339A2 Hole enlargement drilling device and methods for using same |
08/05/2010 | WO2010088228A2 Adjustable downhole motors and methods for use |
08/05/2010 | WO2010088125A1 Electrical submersible pump rotation sensing using an xy vibration sensor |
08/05/2010 | WO2010088119A2 Reducing error contributions to gyroscopic measurements from a wellbore survey system |
08/05/2010 | WO2010086673A1 A riser and a method for identifying a riser |
08/05/2010 | WO2010086671A1 A method for handling a component in the construction, maintenance and repair of wells |
08/05/2010 | WO2010086588A2 Sensing inside and outside tubing |
08/05/2010 | WO2010068892A3 System and method for downhole voltage generation |
08/05/2010 | WO2010065272A3 Rotatable orientation independent gravity sensor and methods for correcting systematic errors |
08/05/2010 | US20100198518 Reducing error contributions to gyroscopic measurements from a wellbore survey system |
08/05/2010 | US20100195442 Mud pulse telemetry data modulation technique |
08/05/2010 | US20100195441 Parallel-path acoustic telemetry isolation system and method |
08/05/2010 | US20100194585 Signal processing in downhole equipment |
08/05/2010 | US20100194395 Enhanced passive ranging methodology for well twinning |
08/05/2010 | US20100193246 Device and Method for Measuring a Property in a Downhole Apparatus |
08/05/2010 | US20100193193 Subterranean system and method for treating and producing oil |
08/05/2010 | US20100193187 Downhole fluid filter |
08/05/2010 | US20100193186 Method and apparatus to construct and log a well |
08/05/2010 | US20100193185 Method and apparatus for rescaling measurements while drilling in different environments |
08/05/2010 | US20100193184 System and method of monitoring flow in a wellbore |
08/05/2010 | US20100193183 Methods and systems for managing aquifer operation |
08/05/2010 | US20100193182 Method of optimizing production of a well |
08/05/2010 | US20100193181 Method of running dts measurements in combination with a back pressure valve |
08/05/2010 | US20100193177 Fluid level sensor |
08/05/2010 | US20100192683 Portable gas monitor |
08/05/2010 | CA2751079A1 A method for handling a component in the construction, maintenance and repair of wells |
08/04/2010 | EP2213834A2 Reducing error contributions to gyroscopic measurements from a wellbore survey system |
08/04/2010 | EP2213833A2 Extendable measuring device |
08/04/2010 | EP2213831A2 Method and apparatus for measuring a parameter within the well of a plug |
08/04/2010 | EP2213830A2 Method and apparatus for measuring a parameter within the well with a plug |
08/04/2010 | EP2212721A2 Apparatus and method for improved light source and light detector for gravimeter |
08/04/2010 | EP2212520A2 Electromagnetic acoustic transducer using magnetic shielding |
08/04/2010 | EP2212512A1 Electrical contact connections for wellbore tools |
08/04/2010 | CN201541199U Logging instrument underground backup power system occupying no cable cores |
08/04/2010 | CN201539253U Pipe nipple for formation characteristic Tool |
08/04/2010 | CN201539252U Storage type multi-parameter combined well measurement instrument |
08/04/2010 | CN201539251U DTB/CAN bus signal simulator |
08/04/2010 | CN201539250U Probe for measuring borehole temperature |
08/04/2010 | CN201539249U Special-purpose lower sheave for downhole testing |
08/04/2010 | CN201539248U Electromagnetic logging instrument for oilfield production well |
08/04/2010 | CN201539247U Water injection flow testing string device |
08/04/2010 | CN201539246U Neutron source bin with automatic position function |
08/04/2010 | CN201539245U Logging ground system power supply and data bus anti-interference circuit |
08/04/2010 | CN101796262A Detecting acoustic signals from a well system |
08/04/2010 | CN101793144A Auxiliary device for improving observing effect of drilling television imaging instrument in muddy water hole |
08/04/2010 | CN101793143A Wired pipe signal transmission testing apparatus and method |
08/04/2010 | CN101793142A True triaxial drilling leakage blockage simulation assessment device |
08/04/2010 | CN101793141A Mining hole depth and slope angle measuring device |
08/04/2010 | CN101793140A Automatically timing oil meter |
08/04/2010 | CN101793129A Drilling rig endoscope motor cable-fixing device |
08/03/2010 | US7769549 Method and device for on-line acoustic monitoring of foam and aerated fluid properties |
08/03/2010 | US7769260 Intervention rod |
08/03/2010 | US7768530 Verification of process variable transmitter |
08/03/2010 | US7768265 Flux plane locating in an underground drilling system |
08/03/2010 | US7767461 Apparatus and method for measuring concentrations of scale-forming ions |
08/03/2010 | US7765862 Determination of formation pressure during a drilling operation |
08/03/2010 | CA2691773A1 Methods and systems for borehole telemetry |
08/01/2010 | CA2691410A1 Parallel-path acoustic telemetry isolation system and method |
07/30/2010 | CA2691034A1 Reducing error contributions to gyroscopic measurements from a wellbore survey system |
07/29/2010 | WO2010085170A1 Method for electrically logging cased wells |
07/29/2010 | WO2010084376A1 Concentration of minor constituent of wellbore fluid |
07/29/2010 | WO2009149038A8 Systems and methods for providing wireless power transmissions and tuning a transmission frequency |
07/29/2010 | US20100187008 Phase Estimation From Rotating Sensors To Get a Toolface |
07/29/2010 | US20100186953 Measuring a characteristic of a well proximate a region to be gravel packed |
07/29/2010 | US20100186951 Mud cake probe extension |
07/29/2010 | US20100186950 Geologic Features From Curvelet Based Seismic Attributes |
07/29/2010 | US20100186949 Assembly for Controlled Delivery of Downhole Treatment Fluid |
07/29/2010 | US20100186948 Methods and apparatus to sample heavy oil from a subteranean formation |
07/29/2010 | US20100186944 Accessible Downhole Power Assembly |
07/29/2010 | US20100186495 Devices and methods for formation testing by measuring pressure in an isolated variable volume |
07/28/2010 | EP2210134A2 Hydrocarbon monitoring cable |
07/28/2010 | EP2209967A2 Method of and apparatus for completing a well |
07/28/2010 | CN201535161U 一种磁源信号发生器 A magnetic source signal generator |
07/28/2010 | CN1936269B Three-layer water-searching pipe column for oil-pumping well in oil field and water-searching method |
07/28/2010 | CN101787883A Underground instrument for magnetic coupling communication |
07/28/2010 | CN101787882A Optical time domain reflection (OTDR) distributed optical fiber sensing system based on Brillouin scattering and subsurface temperature monitoring method using same |
07/28/2010 | CN101787881A Shell of nitrogen pressure-transmission tube used for oilfield and welding method thereof |
07/28/2010 | CN101787880A Measurement-while-drilling device for underground sub-horizontal directional long drill hole of cola mine |
07/28/2010 | CN101787879A Two-segment type gyroscopic survey probe |
07/28/2010 | CN101787878A Intelligent injection allocation instrument of water injection well |
07/28/2010 | CN101787877A Crude-oil automatic continuous measuring device |
07/28/2010 | CN101787874A Intelligent injection allocation testing device of water injection well |
07/28/2010 | CN101122229B Non-metal composite material insulator and metal bonding method dedicated for petrol logging instrument |
07/27/2010 | US7762354 Peizoelectric generator particularly for use with wellbore drilling equipment |
07/27/2010 | US7762328 Formation testing and sampling tool including a coring device |
07/27/2010 | US7762327 Acoustically measuring annulus probe depth |
07/27/2010 | US7762131 System for predicting changes in a drilling event during wellbore drilling prior to the occurrence of the event |
07/27/2010 | CA2691257A1 A method of running dts measurements in combination with a back pressure valve |
07/23/2010 | CA2690926A1 Downhole fluid separation |
07/22/2010 | WO2010083388A2 Estimating petrophysical parameters and invasion profile using joint induction and pressure data inversion approach |