| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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| 05/12/2009 | CA2438139C Downlink telemetry system |
| 05/12/2009 | CA2421863C Evaluation of multilayer reservoirs |
| 05/12/2009 | CA2402203C Oilwell casing electrical power pick-off points |
| 05/12/2009 | CA2401734C Wireless reservoir production control |
| 05/12/2009 | CA2365482C Apparatus and method for actuating arms |
| 05/08/2009 | CA2644293A1 Downhole pump controller |
| 05/07/2009 | WO2009059190A2 Electromagnetic acoustic transducer using magnetic shielding |
| 05/07/2009 | WO2009058126A1 Time to depth conversion for logging systems and methods |
| 05/07/2009 | WO2009056329A2 Method and device for testing the coating of a pipeline while laying the pipeline in a liquid-filled borehole |
| 05/07/2009 | US20090119076 Method for Generating a 3D Earth Model |
| 05/07/2009 | US20090116000 Fiber optic shape determination system |
| 05/07/2009 | US20090115624 Communication system for communication with and remote activation of downhole tools and devices used in association with wells for production of hydrocarbons |
| 05/07/2009 | US20090115623 Bidirectional Telemetry Apparatus And Methods For Wellbore Operations |
| 05/07/2009 | US20090114386 Systems and methods for distributed interferometric acoustic monitoring |
| 05/07/2009 | US20090114013 Apparatus and method for improved light source and light detector for gravimeter |
| 05/07/2009 | US20090114011 Temperature and pressure sensor using four wave mixing technique |
| 05/07/2009 | US20090114010 Testing process for zero emission hydrocarbon wells |
| 05/07/2009 | US20090114009 Method for analysis of pressure response in underground formations |
| 05/07/2009 | US20090114008 Method and apparatus |
| 05/07/2009 | US20090114007 Chemical sensor using four wave mixing technique |
| 05/07/2009 | DE102007051956A1 Verfahren und Vorrichtung zur Überprüfung der Umhüllung einer Rohrleitung während der Verlegung in ein mit Flüssigkeit gefülltes Bohrloch Method and apparatus for checking the serving of a pipeline while laying in a fluid-filled borehole |
| 05/06/2009 | EP2054581A1 Sensor system |
| 05/06/2009 | CN201233961Y Insulation dipole wireless transmission antenna in conjunction with drill |
| 05/06/2009 | CN201232545Y Downhole wireless electromagnetical signal radiation apparatus while drilling |
| 05/06/2009 | CN201232544Y Electric current field receiving antenna apparatus for measurement while drilling |
| 05/06/2009 | CN201232543Y Sand prevention separator |
| 05/06/2009 | CN101424182A Dynamic force multi-parameter measuring systems for rotary simulation of bottom drill string |
| 05/06/2009 | CN100485417C Multi-parameter collecting system and long-distance monitoring system utilizing the same system |
| 05/06/2009 | CN100485415C Method for measuring well by azimuth reflective sound wave |
| 05/06/2009 | CN100485414C Seismic prospecting method between azimuth borehole |
| 05/05/2009 | US7528736 Loaded transducer for downhole drilling components |
| 05/05/2009 | US7527105 Power and/or data connection in a downhole component |
| 05/05/2009 | US7527094 Double barrier system for an in situ conversion process |
| 05/05/2009 | CA2558107C Method and system for detecting conditions inside a wellbore |
| 05/05/2009 | CA2485254C Induction measurements with reduced borehole effects |
| 04/30/2009 | WO2009033132A3 Apparatus and method for estimating a property of a fluid in a wellbore using photonic crystals |
| 04/30/2009 | WO2008118981A3 Wireless logging of fluid filled boreholes |
| 04/30/2009 | US20090107725 System and method for logging soil properties in a borehole |
| 04/30/2009 | US20090107724 Method and apparatus for continuous formation sampling and analysis during wellbore drilling |
| 04/30/2009 | US20090107669 Waterflooding analysis in a subterranean formation |
| 04/30/2009 | US20090107667 Downhole spectroscopic hydrogen sulfide detection |
| 04/30/2009 | US20090107666 High resolution capacitance high conductivity fluid sensor |
| 04/30/2009 | DE102007049606A1 Verfahren und Vorrichtung zum Einziehen eines aus Kurzrohren zusammengesetzten Rohrstranges in einen Bohrkanal Method and apparatus for feeding a composite of short tubes tubing into a drill hole |
| 04/30/2009 | DE102007049605B3 Verfahren und Vorrichtung zum Einziehen eines aus Kurzrohren zusammengesetzten Rohrstranges in einen Bohrkanal mit Zugkraftmessung Method and apparatus for feeding a composite of short tubes tubing into a drill hole with tension measurement |
| 04/29/2009 | EP2053196A1 System and method for controlling the pressure in a wellbore |
| 04/29/2009 | EP2052500A1 Communications system for an underwater fluid extraction facility |
| 04/29/2009 | EP1885996B1 Method for detecting fluid leakage from a subterranean formation |
| 04/29/2009 | CN201228524Y Integral downhole process pipe column for separate layer testing and water shut off for pumping well |
| 04/29/2009 | CN101421490A A method and apparatus for ion-selective discrimination of fluids downhole |
| 04/29/2009 | CN101421483A Electromagnetically determining the relative location of a drill bit using a solenoid source installed on a steel casing |
| 04/29/2009 | CN101418683A Controllable downhole radioactive tracer generator device |
| 04/29/2009 | CN101418682A Well logging winche over-depth protective system |
| 04/28/2009 | US7526407 Detection of water breakthrough |
| 04/28/2009 | US7525315 Resistivity logging tool and method for building the resistivity logging tool |
| 04/28/2009 | CA2611310C Directional sensor system comprising a single axis sensor element positioned at multiple controlled orientations |
| 04/28/2009 | CA2559248C Downhole probe assembly |
| 04/28/2009 | CA2529855C Method and apparatus for formation testing |
| 04/28/2009 | CA2527161C Toolguide for creating deviated borehole branches from a well bore |
| 04/28/2009 | CA2526877C Whipstock for mounting in a casing section |
| 04/28/2009 | CA2444425C Apparatus and method for transporting, deploying, and retrieving arrays having nodes interconnected by sections of cable |
| 04/28/2009 | CA2401791C Wireless power and communications cross-bar switch |
| 04/23/2009 | WO2009052270A1 Electrical contact connections for wellbore tools |
| 04/23/2009 | WO2009052114A2 Water sensing adaptable inflow control device using a powered system |
| 04/23/2009 | WO2009052096A2 Water sensing adaptable in-flow control device and method of use |
| 04/23/2009 | WO2009050517A2 Method of and apparatus for completing a well |
| 04/23/2009 | US20090101340 Technique and apparatus to perform a leak off test in a well |
| 04/23/2009 | US20090101339 Formation evaluation system and method |
| 04/23/2009 | US20090101337 Method and apparatus for detecting defects in oilfield tubulars |
| 04/23/2009 | US20090101329 Water Sensing Adaptable Inflow Control Device Using a Powered System |
| 04/23/2009 | US20090101327 Surface instrumentation configuration for drilling rig operation |
| 04/23/2009 | CA2701883A1 Water sensing adaptable in-flow control device and method of use |
| 04/23/2009 | CA2699578A1 Method of and apparatus for completing a well |
| 04/22/2009 | EP2050920A2 Method and device to pull a pipeline comprised of short pipes into a boring channel |
| 04/22/2009 | EP2050919A2 Method and device to pull a pipeline comprised of short pipes into a boring channel with measurement of pulling power |
| 04/22/2009 | EP2049868A2 Method of applying a string of interconnected strain sensors to an object, a pliable support structure, and method of producing a mineral hydrocarbon fluid |
| 04/22/2009 | CN201225149Y Downhole slurry pulse generator |
| 04/22/2009 | CN201225148Y Non-flowing artesian well pump-following pressure measuring tube column |
| 04/22/2009 | CN201225147Y Holding barrel of long term liquid level monitoring with cable and pump-following test instrument |
| 04/22/2009 | CN201225146Y Downhole oil, water, gas mixing phase flow measuring device |
| 04/22/2009 | CN201225145Y Rolling wheel righting device of righting over core type well logging instrument |
| 04/22/2009 | CN201225144Y Theft- proof box of oil extraction well data recording implement |
| 04/21/2009 | US7523002 Method and system for cause-effect time lapse analysis |
| 04/21/2009 | US7522471 Multimode acoustic imaging in cased wells |
| 04/21/2009 | US7521933 Position and orientation locator/monitor |
| 04/21/2009 | US7520324 Completion apparatus for measuring streaming potentials and determining earth formation characteristics |
| 04/21/2009 | US7520323 Interactive and/or secure activation of a tool |
| 04/21/2009 | US7520321 Redundant systems for downhole permanent installations |
| 04/21/2009 | CA2570674C Well characterisation method |
| 04/21/2009 | CA2523039C Subsurface measurement apparatus, system, and process for improved well drilling, control, and production |
| 04/21/2009 | CA2471327C Protected optical fiber cable and hydrogen gettering agent |
| 04/16/2009 | WO2009048821A2 Downhole optical communication system and method |
| 04/16/2009 | WO2009048351A1 Bore-hole jet device for formation hydraulic fracturing and horizontal well examination and a method for the operation thereof |
| 04/16/2009 | WO2009048340A2 Method and system for registering and measuring leaks and flows |
| 04/16/2009 | WO2009047781A2 A nano-robots system and methods for well logging and borehole measurements |
| 04/16/2009 | WO2009047708A2 Electrically activating a jarring tool |
| 04/16/2009 | WO2009047646A2 Simulating fluid flow in reservoir with modified grid |
| 04/16/2009 | WO2008149124A3 Apparatus for determining the concentration of a conductive fluid present in a fluid filled borehole |
| 04/16/2009 | WO2008021868A3 Resistivty logging with reduced dip artifacts |
| 04/16/2009 | WO2006127892A3 Methods and devices for analyzing and controlling the propagation of waves in a borehole generated by water hammer |
| 04/16/2009 | WO2005050257A3 High temperature imaging device |