| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 07/08/2009 | CN201269094Y Layered well head test apparatus |
| 07/08/2009 | CN201269093Y Well-control blowout prevention early-warning apparatus |
| 07/08/2009 | CN201269092Y Well-cementation flow measurement apparatus |
| 07/08/2009 | CN101476462A Measurement while drilling for engineering geological drilling |
| 07/08/2009 | CN101476461A Down-hole drilling quality check equipment |
| 07/08/2009 | CN100510318C Full optical fiber digital inclinometer |
| 07/08/2009 | CN100510315C Method and system for enhanced access to subterranean zone |
| 07/07/2009 | US7557339 Optical position sensor |
| 07/07/2009 | US7556104 System and method for processing and transmitting information from measurements made while drilling |
| 07/07/2009 | CA2602356C Positioning and conveying well apparatus and method |
| 07/07/2009 | CA2544457C System and method for downhole telemetry |
| 07/07/2009 | CA2483527C Instrumentation for a downhole deployment valve |
| 07/07/2009 | CA2411701C Downhole window finder and method of using the same |
| 07/02/2009 | WO2009082689A1 System and method for optimizing production in a well |
| 07/02/2009 | WO2009082550A2 Apparatus and method for improved light source and light detector for gravimeter. |
| 07/02/2009 | WO2009080711A2 Method for producing hydrocarbons through a well or well cluster of which the trajectory is optimized by a trajectory optimisation algorithm |
| 07/02/2009 | WO2009042781A3 Apparatus and methods for continuous tomography of cores |
| 07/02/2009 | WO2008083230A8 Oilfield analysis system and method |
| 07/02/2009 | US20090168606 Interactive and/or secure acivation of a tool |
| 07/02/2009 | US20090167297 Optical fiber system and method for wellhole sensing of fluid flow using diffraction effect of faraday crystal |
| 07/02/2009 | US20090166087 Communication connections for wired drill pipe joints for providing multiple communication paths |
| 07/02/2009 | US20090166045 Harvesting vibration for downhole power generation |
| 07/02/2009 | US20090166036 Progressive cavity pump rod guide |
| 07/02/2009 | US20090166035 Borehole Imaging and Orientation of Downhole Tools |
| 07/02/2009 | US20090166034 Gas wellhead extraction system and method |
| 07/02/2009 | US20090166033 Closed loop control system for controlling production of hydrocarbon fluid from an underground formation |
| 07/02/2009 | US20090166032 Inline Downhole Heater and Methods of Use |
| 07/02/2009 | US20090166031 Monitoring downhole conditions with drill string distributed measurement system |
| 07/02/2009 | US20090166030 Method to monitor reservoir fracture development and its geometry |
| 07/02/2009 | US20090166029 Method of formation fracture dimensions |
| 07/02/2009 | US20090166024 Completion apparatus for measuring streaming potentials and determining earth formation characteristics |
| 07/02/2009 | US20090166023 Well Having Inductively Coupled Power and Signal Transmission |
| 07/02/2009 | US20090165548 Systems and methods for well data analysis |
| 07/02/2009 | US20090165547 Apparatus and Method for Detecting Fluid Entering a Wellbore |
| 07/02/2009 | CA2705893A1 Method for producing hydrocarbons through a well or well cluster of which the trajectory is optimized by a trajectory optimisation algorithm |
| 07/02/2009 | CA2704941A1 Apparatus and method for improved light source and light detector for gravimeter |
| 07/01/2009 | EP1904715A4 Method and associated system for setting downhole control pressure |
| 07/01/2009 | CN201265412Y Down-hole tube diameter and tube position temperature tester |
| 07/01/2009 | CN201265411Y Portable well head pressure-testing connection device |
| 07/01/2009 | CN201265410Y Roller starting taper for high angle deviated well test |
| 07/01/2009 | CN201265409Y Electric centralizer for high angle deviated well test |
| 07/01/2009 | CN201265408Y Radiating device |
| 07/01/2009 | CN201265407Y Multi-item combined down-hole tester |
| 07/01/2009 | CN201265406Y Oil well two-chamber weighing type full-automatic three-phase metering device |
| 07/01/2009 | CN101473104A Fluid diversion measurement methods and systems |
| 07/01/2009 | CN101469610A Measurement while drilling exploring tube sensor signal simulator |
| 07/01/2009 | CN101469609A Oil pumping well liquid level measuring systems, measuring method and oil pumping well oil extraction technique integrated control system |
| 07/01/2009 | CN100507208C Well control using pressure while drilling measurements |
| 06/30/2009 | US7555391 Multiple distributed force measurements |
| 06/30/2009 | US7554329 Method and apparatus for determining formation resistivity ahead of the bit and azimuthal at the bit |
| 06/30/2009 | CA2584691C Inductive coupling system |
| 06/30/2009 | CA2546080C Technique and apparatus for use in well testing |
| 06/30/2009 | CA2457426C Acoustical telemetry |
| 06/25/2009 | WO2009079631A2 Downhole tool damage detection system and method |
| 06/25/2009 | WO2009079492A2 Systems and methods for modeling wellbore trajectories |
| 06/25/2009 | WO2009077867A2 Technique and apparatus to perform a leak off test in a well |
| 06/25/2009 | WO2009077758A1 Compositions and methods for monitoring flow through fluid conducting and containment systems |
| 06/25/2009 | WO2009077716A1 Determining solid content concentration in a fluid stream |
| 06/25/2009 | WO2009077151A1 Variable throat venturi flow meter |
| 06/25/2009 | WO2009042785A3 Sensors for estimating properties of a core |
| 06/25/2009 | WO2009040510A3 Down-hole wireless communication system |
| 06/25/2009 | WO2008035156A3 Methods and apparatus for photonic power conversion downhole |
| 06/25/2009 | US20090164189 Method of optimizing the development of a fluid reservoir by taking into account a geologic and transient exchange term between matrix blocks and fractures |
| 06/25/2009 | US20090162223 Submersible pump |
| 06/25/2009 | US20090159337 Method for detecting formation pore pressure by detecting pumps-off gas downhole |
| 06/25/2009 | US20090159336 Integrated Quill Position and Toolface Orientation Display |
| 06/25/2009 | US20090159335 Monitoring apparatus for core barrel operations |
| 06/25/2009 | US20090159333 Determining drillstring neutral point based on hydraulic factor |
| 06/25/2009 | US20090159276 Methods and Apparatus for Communicating Across Casing |
| 06/25/2009 | US20090159274 Full bore valve for downhole use |
| 06/25/2009 | US20090159273 Logging tool deployment systems and methods with pressure compensation |
| 06/25/2009 | US20090159272 Monitoring, controlling and enhancing processes while stimulating a fluid-filled borehole |
| 06/25/2009 | US20090159260 Method for calculating the ratio of relative permeabilities of formation fluids and wettability of a formation downhole, and a formation testing tool to implement the same |
| 06/25/2009 | US20090158837 Apparatus and methods to peform downhole measurements associated with subterranean formation evaluation |
| 06/25/2009 | CA2709549A1 Compositions and methods for monitoring flow through fluid conducting and containment systems |
| 06/25/2009 | CA2709087A1 Systems and methods for modeling wellbore trajectories |
| 06/24/2009 | EP2072971A1 Variable throat venturi flow meter |
| 06/24/2009 | EP2072829A1 Immersion pump |
| 06/24/2009 | EP2072752A1 Method for optimising the exploitation of a fluid reservoir by taking into consideration a geological and transitional exchange term between matrix blocks and fractures |
| 06/24/2009 | EP1871990B1 Low temperature monitoring system for subsurface barriers |
| 06/24/2009 | CN201262082Y Flow drainage apparatus for pipe column after pressure test |
| 06/24/2009 | CN201262081Y Gradienter adopting wireless transmission |
| 06/24/2009 | CN101466916A In-borehole gas monitor apparatus and method |
| 06/24/2009 | CN100504444C Underground electromagnetic measurements using cross-magnetic dipoles |
| 06/23/2009 | US7549478 Well jet device and the operating method thereof |
| 06/23/2009 | US7549471 Deployment tool for well logging instruments conveyed through the interior of a pipe string |
| 06/23/2009 | CA2589332C Method and system for accessing subterranean deposits from the surface |
| 06/23/2009 | CA2442054C Very high data rate telemetry system for use in a wellbore |
| 06/23/2009 | CA2435351C Replaceable antennas for wellbore apparatus |
| 06/23/2009 | CA2401709C Wireless downhole well interval inflow and injection control |
| 06/18/2009 | WO2009074884A2 Method and apparatus for detecting defects in oilfield tubulars |
| 06/18/2009 | WO2009043589A3 Method and device for in situ determination of the operating states of driven machines |
| 06/18/2009 | US20090157341 Methods of Correcting Accelerometer and Magnetometer Measurements |
| 06/18/2009 | US20090153141 Flux Orientation Locating in a Drilling System |
| 06/18/2009 | US20090151940 System and Method to Provide Verification during a Fishing Operation in a Wellbore |
| 06/18/2009 | US20090151939 Surface tagging system with wired tubulars |
| 06/18/2009 | US20090151937 Well thermal insulation for formation sampling of viscous fluids |
| 06/18/2009 | US20090151935 System and method for detecting movement in well equipment |
| 06/18/2009 | US20090151933 Lost profit reduction process and system |
| 06/18/2009 | US20090151423 Pressure measuring device and method |