| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 10/08/2008 | CN201129167Y Anti-gas leakage gas well single flow valve |
| 10/08/2008 | CN201129157Y Oil well head pressure testing anti-theft sampler |
| 10/08/2008 | CN201129156Y Novel blowout preventer |
| 10/08/2008 | CN101280681A Oil well suppressing pressure experiment recorder using GPS positioning technique |
| 10/08/2008 | CN101280680A Three-phase flow measuring device |
| 10/07/2008 | US7432499 Method and apparatus for detecting while drilling underbalanced the presence and depth of water produced from the formation |
| 10/07/2008 | US7432109 Fluids analyzer; accurate determination in bore holes |
| 10/07/2008 | US7430903 Fluid flow measurement using optical fibres |
| 10/07/2008 | CA2502499C Actuation system for a downhole tool |
| 10/07/2008 | CA2502154C A combined propagation and lateral resistivity downhole tool |
| 10/07/2008 | CA2482096C Magnetically activated well tool |
| 10/07/2008 | CA2419914C Drill string telemetry system and method |
| 10/07/2008 | CA2380496C Method for determining a fluid contact level in a formation |
| 10/02/2008 | WO2008118986A1 Determination of downhole pressure while pumping |
| 10/02/2008 | WO2008118981A2 Wireless logging of fluid filled boreholes |
| 10/02/2008 | WO2008118956A1 Method and apparatus for determining the properties of drilling fluids |
| 10/02/2008 | WO2008118931A2 Wellbore communication, downhole module, and method for communicating |
| 10/02/2008 | WO2008118735A1 Systems and methods for displaying logging data |
| 10/02/2008 | WO2008117198A1 Apparatus, system, and method for determining injected fluid vertical placement |
| 10/02/2008 | WO2008089427A3 A system and method for determining producibility of a formation using flexural mechanical resonator measurements |
| 10/02/2008 | WO2008064034A8 Cement bond analysis |
| 10/02/2008 | WO2007124041A3 A system and method for estimating supercharge pressure and initial pressure of a formation |
| 10/02/2008 | US20080240930 Method and System for Optimizing Downhole Fluid Production |
| 10/02/2008 | US20080239872 Wireless Logging of Fluid Filled Boreholes |
| 10/02/2008 | US20080236935 Determination of downhole pressure while pumping |
| 10/02/2008 | US20080236837 Communicating measurement data from a well |
| 10/02/2008 | US20080236819 Position sensor for determining operational condition of downhole tool |
| 10/02/2008 | US20080236818 Method and Apparatus for Controlling the Manufacture of Well Treatment Fluid |
| 10/02/2008 | US20080236817 System and method for recovery of fuel products from subterranean carbonaceous deposits via an electric device |
| 10/02/2008 | US20080236816 Method for detecting fluid leakage fro a subterranean formation |
| 10/02/2008 | US20080236814 Use of micro-electro-mechanical systems (mems) in well treatments |
| 10/02/2008 | US20080236271 Downhole seal assembly having embedded sensors and method for use of same |
| 10/02/2008 | US20080236253 Method and apparatus for determining the properties of drilling fluids |
| 10/02/2008 | CA2682918A1 Wellbore communication, downhole module, and method for communicating |
| 10/02/2008 | CA2682240A1 Apparatus, system, and method for determining injected fluid vertical placement |
| 10/02/2008 | CA2681623A1 Determination of downhole pressure while pumping |
| 10/02/2008 | CA2681622A1 Wireless logging of fluid filled boreholes |
| 10/01/2008 | EP1975369A2 Method and system for accessing subterranean deposits from the surface |
| 10/01/2008 | EP1974231A2 Programmable data acquisition for tubular objects |
| 10/01/2008 | EP1974122A1 Device and method for producing soil structures in the ground |
| 10/01/2008 | EP1974121A1 Method for monitoring fluid properties |
| 10/01/2008 | CN201125729Y Slurry pulser |
| 10/01/2008 | CN201125728Y Block type faner pressure meter |
| 10/01/2008 | CN201125727Y Water injection well test combined instrument |
| 10/01/2008 | CN201125726Y Intelligent single well flow quantity apparatus |
| 10/01/2008 | CN201125725Y Adjustable work measuring suite in creep grinding device |
| 10/01/2008 | CN101278102A Surface communication apparatus and method for use with string telemetry |
| 10/01/2008 | CN100422765C Integrated acoustic transducer assembly |
| 10/01/2008 | CN100422764C Device and method for determining mud slowness in a borehole |
| 09/30/2008 | US7430153 Downhole tool and method |
| 09/30/2008 | US7429934 Mud pulse landing assembly for use in directional drilling |
| 09/30/2008 | US7428925 Wellbore formation evaluation system and method |
| 09/30/2008 | US7428924 System and method for completing a subterranean well |
| 09/30/2008 | CA2624039A1 Communicating measurement data from a well |
| 09/30/2008 | CA2512443C Downhole measurement system and method |
| 09/30/2008 | CA2476787C Integrated magnetic ranging tool |
| 09/30/2008 | CA2463611C Inflation tool with real-time temperature and pressure probes |
| 09/28/2008 | CA2622044A1 Position sensor for determining operational condition of downhole tool |
| 09/25/2008 | WO2008116077A2 Downhole tool string component |
| 09/25/2008 | WO2008115238A1 A drill bit assembly adapted to provide power downhole |
| 09/25/2008 | WO2008093054A3 Systems and methods for monitoring sensor and actuator health and performance |
| 09/25/2008 | US20080230273 Instantaneous measurement of drillstring orientation |
| 09/25/2008 | US20080230221 Methods and systems for monitoring near-wellbore and far-field reservoir properties using formation-embedded pressure sensors |
| 09/24/2008 | CN201121518Y Self-locking circulating sleeve of wireless measurement instrument while drilling |
| 09/24/2008 | CN201121514Y Oil gas well foam drainage experimental device |
| 09/24/2008 | CN101273286A Method and apparatus for enhancing formation resistivity images obtained with downhole galvanic tools |
| 09/24/2008 | CN101273285A Method and apparatus for transmitting or receiving information between a downhole equipment and surface |
| 09/24/2008 | CN101270666A Tunnel stope front geological condition section-expanding horizontal drilling estimation and prediction method |
| 09/24/2008 | CN101270658A Correlated flux injection section test method and construction technique |
| 09/24/2008 | CN101270657A Baffle flowmeter and detection method thereof |
| 09/24/2008 | CN101270646A Water injection well down-hole water sound intelligent control regulating and measuring system |
| 09/24/2008 | CN101270641A Miniature gravel filling simulation device and method for measuring gravel filling effect |
| 09/23/2008 | US7427504 analyzing formation fluid in earth formation surrounding a borehole includes storing analytical reagent in a reagent container in a fluids analyzer in a formation tester and moving the formation tester, including the reagent, downhole |
| 09/23/2008 | US7426968 Drill bit assembly with a probe |
| 09/23/2008 | CA2502648C Actuation system for a downhole tool |
| 09/23/2008 | CA2453010C Frequency regulation of an oscillator for use in mwd |
| 09/23/2008 | CA2409277C Wellbores utilizing fiber optic-based sensors and operating devices |
| 09/23/2008 | CA2313919C Downhole communication method and apparatus |
| 09/22/2008 | CA2627814A1 Multiphase-liquid level data logger |
| 09/18/2008 | WO2008112795A1 Fracture testing apparatus and method |
| 09/18/2008 | WO2008112331A1 A unitized multi-gauge multi-circuit gauge cluster, system array and gauge carrier for permanent down-hole production tube monitoring |
| 09/18/2008 | WO2008061033A3 Rotating fluid measurement device and method |
| 09/18/2008 | US20080223569 Centering assembly for an electric downhole connection |
| 09/18/2008 | CA2680670A1 Fracture testing apparatus and method |
| 09/17/2008 | EP1969204A2 Method for determining formation fluid entry into or drilling fluid loss from a borehole using a dynamic annular pressure control system |
| 09/17/2008 | CN201116467Y Pumping well suppressed pressure measuring device |
| 09/17/2008 | CN101268359A Electro-chemical sensor |
| 09/17/2008 | CN101268251A Acoustic fluid analyzer |
| 09/17/2008 | CN101265804A Well drilling high precision gradient meter sensor perpendicular installation error compensation process |
| 09/17/2008 | CN101265803A Horizontal and uniform acid distribution integrated experimental device and its operation method |
| 09/17/2008 | CN100419205C Constant force actuator |
| 09/16/2008 | US7425829 Tracking positions of personnel, vehicles, and inanimate objects |
| 09/16/2008 | US7424912 Wellbore treatment apparatus and method |
| 09/16/2008 | US7424911 Method of estimating fracture geometry, compositions and articles used for the same |
| 09/16/2008 | US7424910 Downhole abrading tools having a hydrostatic chamber and uses therefor |
| 09/16/2008 | CA2527605C System, apparatus, and method of conducting measurements of a borehole |
| 09/16/2008 | CA2468193C Determination of borehole geometry inside cased wells with crosswell electromagnetics |
| 09/16/2008 | CA2365333C Fluid controlled adjustable down-hole tool |
| 09/16/2008 | CA2338800C Enhancement of profiled tubular lining systems by channel augmentation |
| 09/12/2008 | WO2008109645A2 Automated oil well test classification |