| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 11/28/2007 | EP1859126A2 Determination of coal bed natural gas production factors and a system to determine same |
| 11/28/2007 | EP1210498B1 Smart shuttles to complete oil and gas wells |
| 11/28/2007 | CN200982193Y All-sealed slim-hole sound graduator |
| 11/28/2007 | CN200982192Y Double flexibility joint for multi-bottom branch well |
| 11/28/2007 | CN200982191Y Steel wire armouring optical cable for logging |
| 11/28/2007 | CN200982190Y Weight indicator safety alarm system |
| 11/28/2007 | CN200982189Y Composite perforator dynamic test device |
| 11/28/2007 | CN200982184Y Metering, operating mode analysis optimization system for oil well liquid-producing capacity |
| 11/28/2007 | CN200982162Y Stratified test sand control pipe |
| 11/28/2007 | CN101078346A Double-volume gas-free metering separator |
| 11/28/2007 | CN100351493C Measuring method of under well oil, gas and water three-phase flow and its device |
| 11/27/2007 | US7302373 System and method for visualizing data in a three-dimensional scene |
| 11/27/2007 | US7301852 Methods of generating directional low frequency acoustic signals and reflected signal detection enhancements for seismic while drilling applications |
| 11/27/2007 | US7301609 Measuring sonde for a hydrocarbon well |
| 11/27/2007 | US7301474 Wireless communication system and method |
| 11/27/2007 | US7301472 Big bore transceiver |
| 11/27/2007 | US7301338 Automatic adjustment of NMR pulse sequence to optimize SNR based on real time analysis |
| 11/27/2007 | US7301223 High temperature electronic devices |
| 11/27/2007 | US7299884 Seismic measurements while drilling |
| 11/27/2007 | US7299678 Sensor apparatus |
| 11/27/2007 | CA2524554C Electrical energy from a wellbore light cell |
| 11/27/2007 | CA2264632C Wellbores utilizing fiber optic-based sensors and operating devices |
| 11/27/2007 | CA2147592C Integrated modulator and turbine-generator for a measurement while drilling tool |
| 11/22/2007 | WO2007131662A1 Method and apparatus for locating a plug within the well |
| 11/22/2007 | WO2007067544A3 Apparatus, system and method for installing boreholes from a main wellbore |
| 11/22/2007 | WO2007014111A3 Downhole tool position sensing system |
| 11/22/2007 | WO2006091640A3 Apparatus for monitoring pressure using capillary tubing |
| 11/22/2007 | US20070267192 Method and Apparatus for Correcting Underestimation of Formation Anisotropy Ratio |
| 11/22/2007 | US20070267191 Method of Modifying Permeability between Injection and Production Wells |
| 11/22/2007 | CA2657629A1 Method and apparatus for locating a plug within the well |
| 11/21/2007 | EP1857632A1 Method and apparatus for correcting magnetic flux sensor signals |
| 11/21/2007 | EP1856517A1 Apparatus and method of determining casing thickness and permeability |
| 11/21/2007 | EP1709293B1 Method and apparatus for enhancing directional accuracy and control using bottomhole assembly bending measurements |
| 11/21/2007 | CN200978672Y Downhole crack pressure monitoring instrument |
| 11/21/2007 | CN200978671Y Peg-top continuous inclinometer |
| 11/21/2007 | CN200978670Y Test system shock-absorbing device for oil gas well perforation |
| 11/21/2007 | CN200978669Y Downhole safety eccentering device for logger |
| 11/21/2007 | CN200978668Y Logging winch collector ring |
| 11/21/2007 | CN101074603A Radial detection determiner and determining system |
| 11/21/2007 | CN101074600A Core-dissecting micro-analysis |
| 11/21/2007 | CN100350274C Semi-conductive shell for sources and sensors |
| 11/21/2007 | CN100350127C Butt-joint drilling rod capable of transmitting electric signal |
| 11/20/2007 | US7298285 Rotary downlink system |
| 11/20/2007 | US7296639 Wellstring assembly |
| 11/20/2007 | US7296638 Orientation device for a core sample |
| 11/20/2007 | US7296637 Oil drilling tool |
| 11/20/2007 | US7296363 Shape-acceleration measurement device and method |
| 11/20/2007 | CA2356025C Measurement-while-drilling assembly using gyroscopic devices and methods of bias removal |
| 11/15/2007 | WO2007130749A2 Drill bit assembly with a logging device |
| 11/15/2007 | WO2007130039A1 Method system and program storage device for synchronizing displays relative to a point in time |
| 11/15/2007 | WO2007105167A3 Method and apparatus for hydraulic fracturing and monitoring |
| 11/15/2007 | WO2007018860A3 Well modeling associated with extraction of hydrocarbons from subsurface formations |
| 11/15/2007 | US20070261486 Means For Measuring Fluid Flow In a Pipe |
| 11/15/2007 | CA2647416A1 Drill bit assembly with a logging device |
| 11/14/2007 | EP1854959A1 Method and apparatus for locating a plug within the well |
| 11/14/2007 | EP1854958A1 Wellbore evaluation system and method |
| 11/14/2007 | EP1853794A1 Device for monitoring a drilling or coring operation and installation comprising such a device |
| 11/14/2007 | EP1853792A2 Novel device and methods for firing perforating guns |
| 11/14/2007 | CN200975252Y Buffering device of testing system for oil gas well perforation |
| 11/14/2007 | CN200975251Y Single well metering mechanism for air-free measuring station |
| 11/14/2007 | CN200975250Y Electric machine switch down-spring releaser |
| 11/14/2007 | CN200975228Y Anti-blocking sprayer for test borehole testing |
| 11/14/2007 | CN101070757A Near-bit logging data motor-passing wired transmission device |
| 11/14/2007 | CN101070756A Petroleum well-drilling loss-zone position detection method and apparatus |
| 11/14/2007 | CN100349017C Method for scanning radiation three-dimensional acoustic field in formations generated from a borehole |
| 11/14/2007 | CN100349016C Method for scanning radiation two-dimensional acoustic field in formations generated from a borehole |
| 11/14/2007 | CN100349015C Apparatus for transmitting excitation signal of phased array sound wave transducer |
| 11/14/2007 | CN100348834C Ultrasonic well logging instrument |
| 11/13/2007 | US7295491 High impact communication and control system |
| 11/13/2007 | US7293746 Locking clips for retaining parallel members |
| 11/13/2007 | US7293613 Logging-while-coring method and apparatus |
| 11/13/2007 | CA2443111C Method and apparatus for analyzing casing wear and retrieval of metallic fragments |
| 11/09/2007 | CA2587984A1 Method and apparatus for correcting magnetic flux sensor signals |
| 11/09/2007 | CA2587982A1 Wellbore evaluation system and method |
| 11/08/2007 | WO2007127365A2 Method and apparatus for correcting underestimation of formation anistropy ratio |
| 11/08/2007 | WO2007127053A2 Non-intrusive pressure gage |
| 11/08/2007 | WO2007127003A2 Downhole fluid characterization based on changes in acoustic properties with pressure |
| 11/08/2007 | WO2007126515A2 System and method for breach detection in petroleum wells |
| 11/08/2007 | WO2007126331A1 Method for operating a jet device for developing and operating oil- and-gas wells |
| 11/08/2007 | WO2007016464B1 Acoustic fluid analyzer |
| 11/08/2007 | US20070256942 Measurement Of Corrosivity |
| 11/08/2007 | US20070256862 Rotary drill bits, methods of inspecting rotary drill bits, apparatuses and systems therefor |
| 11/08/2007 | US20070256832 Method of analyzing a subterranean formation and method of producing a mineral hydrocarbon fluid from the formation |
| 11/08/2007 | US20070256830 Method and an apparatus for evaluating a geometry of a hydraulic fracture in a rock formation |
| 11/08/2007 | US20070256829 Apparatus for wellbore communication |
| 11/08/2007 | US20070256490 Internal riser inspection device and methods of using same |
| 11/08/2007 | DE102007020650A1 Logging tool e.g. downhole tool, for use in oil and gas exploration, has inserts carried on sleeve to enhance mechanical properties of sleeve and having physical characteristics different from material comprising sleeve |
| 11/08/2007 | CA2650598A1 Method and apparatus for correcting underestimation of formation anisotropy ratio |
| 11/07/2007 | CN200972531Y Track measuring target prism device for small diameter hole drilling |
| 11/07/2007 | CN200972421Y Fixed load sensor for pumping well measuring diagram |
| 11/07/2007 | CN200972399Y Weight electronci level sensing, transmitting, measuring device |
| 11/07/2007 | CN200972395Y Dip flow measuring device |
| 11/07/2007 | CN200971780Y Measuring instrument for packer of water injection well |
| 11/07/2007 | CN200971779Y Electronic underground instrument throwing instrument |
| 11/07/2007 | CN200971778Y Well surveying device of electromagnet defects detector combined with 18 arm well diameter instrument |
| 11/07/2007 | CN200971768Y Stop valve capable of measuring pressure |
| 11/07/2007 | CN101067371A Fast distributing and water floor injection well zone-by-zone flow allocating technology |
| 11/06/2007 | US7290601 Braided thermocouple cable bundle |
| 11/06/2007 | US7290443 Method for measuring formation properties with a time-limited formation test |
| 11/06/2007 | CA2440815C Hydraulically balanced reciprocating pulser valve for mud pulse telemetry |