| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 03/29/2006 | EP1466068B1 Dual-member pipe driven power generator |
| 03/29/2006 | EP1159506B1 Steerable modular drilling assembly |
| 03/29/2006 | CN2767660Y Downhole parameter gauging nipple for well plugging device for under-balanced well |
| 03/29/2006 | CN1752409A Method of injecting radioactive isotope into well and determining its radial position |
| 03/29/2006 | CN1752408A Well closing pressure measuring method for low pressure low permeation oil field oil water well |
| 03/28/2006 | US7017667 Drill string transmission line |
| 03/28/2006 | US7017662 High temperature environment tool system and method |
| 03/28/2006 | US7017661 Production of synthesis gas from a coal formation |
| 03/28/2006 | US7017417 Pressure sensor assembly suitable for use in harsh environments |
| 03/28/2006 | CA2436917C Rib-mounted logging-while-drilling (lwd) sensors |
| 03/28/2006 | CA2373322C Flow monitoring and control in multi-lateral wellbores |
| 03/28/2006 | CA2368915C Wireless packer/anchor setting or activation |
| 03/28/2006 | CA2260540C Downhole connector for production tubing and control line and method |
| 03/28/2006 | CA2233086C Method for isolating multi-lateral well completions while maintaining selective drainhole re-entry access |
| 03/23/2006 | US20060062249 Apparatus and method for adjusting bandwidth allocation in downhole drilling networks |
| 03/23/2006 | US20060060351 Apparatus and methods for improved fluid displacement in subterranean formations |
| 03/23/2006 | DE102005041248A1 Vorrichtung und Verfahren zur Formationsbewertung Apparatus and method for formation evaluation |
| 03/23/2006 | CA2520387A1 Methods and systems for compressing sonic log data |
| 03/22/2006 | EP1637695A1 Methods and apparatus for remote monitoring and control. |
| 03/22/2006 | CN2766038Y Portable fracturing and acidizing parameter monitoring instrument |
| 03/21/2006 | US7016026 Method and apparatus for a downhole refractometer and attenuated reflectance spectrometer |
| 03/21/2006 | US7015697 Multi-frequency boring tool locating system and method |
| 03/21/2006 | US7013991 Obstacle detection system for underground operations |
| 03/21/2006 | US7013990 Apparatus and method for simultaneously locating a fixed object and tracking a beacon |
| 03/21/2006 | US7013989 Acoustical telemetry |
| 03/21/2006 | US7013971 Reverse circulation cementing process |
| 03/21/2006 | US7013724 Method for characterizing parameters of wells, well bottom zone and formation, and device for carrying out said method |
| 03/21/2006 | US7013723 Apparatus and methods for canceling the effects of fluid storage in downhole tools |
| 03/21/2006 | US7013715 Multiphase flow measurement system |
| 03/21/2006 | CA2386988C Virtual steering of induction tool attenuation and phase difference measurements |
| 03/21/2006 | CA2318485C Bore hole transmission system using impedance modulation |
| 03/21/2006 | CA2269766C Method and system for cement bond evaluation in high acoustic velocity formations |
| 03/21/2006 | CA2154378C Method and apparatus for interrogating a borehole |
| 03/21/2006 | CA2077177C Modulated bias units for steerable rotary drilling systems |
| 03/16/2006 | WO2006029203A1 Magnetic assemblies for deposit prevention |
| 03/16/2006 | US20060054354 Downhole tool |
| 03/16/2006 | US20060054317 Method and apparatus for a tubing conveyed perforating guns fire identification system using fiber optics |
| 03/16/2006 | US20060054316 Method and apparatus for production logging |
| 03/16/2006 | DE10116363B4 Bohrkopf einer Bohreinrichtung, insbesondere Spülbohrkopf einer Flachbohreinrichtung Drill a drilling, in particular a power swivel Flachbohreinrichtung |
| 03/16/2006 | CA2579582A1 Magnetic assemblies for deposit prevention |
| 03/16/2006 | CA2578367A1 Hydraulically operated protector for downhole devices |
| 03/16/2006 | CA2519740A1 Methods for visualizing distances between wellbore and formation boundaries |
| 03/15/2006 | EP1635035A1 Hydraulically operated protection for downhole devices |
| 03/15/2006 | EP1635034A1 Structural member bend radius and shape sensor and measurement apparatus |
| 03/15/2006 | EP1635032A1 Method and apparatus for controlling surface well equipment |
| 03/15/2006 | EP1511912A4 Downhole tool deployment safety system and methods |
| 03/15/2006 | EP1397661A4 Method and apparatus for downhole fluid characterization using flxural mechanical resonators |
| 03/15/2006 | EP1153320B1 Focused formation fluid sampling probe |
| 03/14/2006 | US7011155 Formation testing apparatus and method for optimizing draw down |
| 03/14/2006 | CA2432258C Floating instrument insert for a tool |
| 03/14/2006 | CA2419813C Apparatus and method for synchronized formation measurement |
| 03/14/2006 | CA2382630C A method of monitoring pumping operations of a service vehicle at a well site |
| 03/14/2006 | CA2374733C Acoustic telemetry system with drilling noise cancellation |
| 03/14/2006 | CA2329472C Decentralizing, centralizing, locating and orienting subsystems and methods for subterranean multilateral well drilling and completion |
| 03/14/2006 | CA2318562C Conductive medium for openhole logging and logging while drilling |
| 03/14/2006 | CA2286435C Method and system for transmitting information by electromagnetic wave |
| 03/14/2006 | CA2193250C Method and apparatus for signal recording during drilling operations |
| 03/09/2006 | US20060052903 Controller system for downhole applications |
| 03/09/2006 | US20060049960 Battery conservation for downhole telemetry |
| 03/09/2006 | US20060048970 Electronic roll indexing compensation in a drilling system and method |
| 03/09/2006 | US20060048937 Perforation method and apparatus |
| 03/09/2006 | CA2819532A1 Core sample orientation |
| 03/09/2006 | CA2559030A1 Core sample orientation |
| 03/08/2006 | EP1632644A2 Method and apparatus for monitoring and recording of operating conditions of a downhole drill bit during drilling operations |
| 03/08/2006 | EP1632643A2 Method and apparatus for monitoring and recording of operating conditions of a downhole drill bit during drilling operations |
| 03/08/2006 | EP1632642A1 Hydraulically operated fluid metering apparatus for use in a subterranean well |
| 03/08/2006 | EP1632641A1 Hydraulically operated fluid metering apparatus for use in a subterranean well |
| 03/08/2006 | CN2763510Y Seal test tool for eccentric water injection tool |
| 03/08/2006 | CN2763509Y Sand holding leather cup with pressure transmission function |
| 03/08/2006 | CN2763508Y Cable measurer for oil well depth |
| 03/08/2006 | CN2763507Y Gamma-ray and well depth measuring rod for oil and gas well |
| 03/08/2006 | CN2763506Y Anti-sersmic magnetic positioner |
| 03/08/2006 | CN2763505Y Mechanical wireless drilling-followed inclinometer |
| 03/08/2006 | CN2763504Y Three-flap type guiding-chain |
| 03/08/2006 | CN2763503Y Wet joint assembly of hole logging |
| 03/08/2006 | CN2763471Y Centrilizer for logging weighing |
| 03/08/2006 | CN1743643A Mechanical frame for optical-fiber gyro inclinometer for oil well |
| 03/08/2006 | CN1743640A Oil well electric pump separate-extraction intelligent joint |
| 03/08/2006 | CA2518477A1 Microfluidic separator |
| 03/08/2006 | CA2518347A1 Method and apparatus for controlling wellbore equipment |
| 03/07/2006 | US7009312 Versatile modular programmable power system for wireline logging |
| 03/07/2006 | US7007758 Cavity positioning tool and method |
| 03/07/2006 | US7007756 Providing electrical isolation for a downhole device |
| 03/07/2006 | CA2415488C Apparatus and methods for orientation of a tubular string in a non-vertical wellbore |
| 03/07/2006 | CA2242850C Method for conducting moving or rolling check shot for correcting borehole azimuth surveys |
| 03/02/2006 | WO2006021925A2 Well site communication system |
| 03/02/2006 | WO2006021751A1 Structural member bend radius and shape sensor and measurement apparatus |
| 03/02/2006 | US20060045408 Structural member bend radius and shape sensor and measurement apparatus |
| 03/02/2006 | US20060044155 Data transmission device |
| 03/02/2006 | US20060043635 Singular and co-molded pre-forms |
| 03/02/2006 | US20060042792 Methods and apparatus for locating a lateral wellbore |
| 03/02/2006 | US20060042372 Determination of correct horizontal and vertical permeabilities in a deviated well |
| 03/02/2006 | US20060042371 Determining horizontal and vertical permeabilities by analyzing two pretests in a horizontal well |
| 03/02/2006 | CA2576298A1 Well site communication system |
| 03/01/2006 | EP1629176A1 On-line compositional allocation |
| 03/01/2006 | CN2761842Y Anti-high temperature during drilling well pressure temperature testing tool |
| 03/01/2006 | CN2761841Y Driller synchronous display in non excavating guiding instrument system |
| 03/01/2006 | CN2761840Y Shock-proof device of deep well testing instrument |
| 03/01/2006 | CN2761839Y High temperature direct reading four-parameter optical fiber sensor for thick oil hot extraction well |
| 03/01/2006 | CN1740821A Multi-parameter collecting system and long-distance monitoring system utilizing the same system |