| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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| 07/24/2008 | WO2008033967A8 Instantaneous measurement of drillstring orientation |
| 07/24/2008 | WO2007068877A8 Methods and systems for robust and accurate determination of wireline depth in a borehole |
| 07/24/2008 | US20080175099 Fluid characterization from acoustic logging data |
| 07/24/2008 | US20080173481 Drill bit configurations for parked-bit or through-the-bit-logging |
| 07/24/2008 | US20080173075 Apparatus and method for fluid rheology measurements |
| 07/24/2008 | CA2671252A1 Measurement device in a horizontal well |
| 07/23/2008 | EP1945905A1 Monitoring formation properties |
| 07/23/2008 | CN201090208Y Well logger for independent arm hole diameter imaging |
| 07/23/2008 | CN201090207Y Collector for detecting depth of well cable |
| 07/23/2008 | CN201090206Y Logging instrument for testing oil of gas well |
| 07/23/2008 | CN100404787C A method and apparatus for acquiring data in a hydrocarbon well in production |
| 07/23/2008 | CN100404786C Well logging power graph device |
| 07/22/2008 | US7403857 Enhanced measurement of azimuthal dependence of subterranean parameters with filters and/or discretely sampled data |
| 07/22/2008 | US7403014 Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal |
| 07/22/2008 | US7403013 Boring tool tracking/guiding system and method with unconstrained target location geometry |
| 07/22/2008 | US7401654 Blowout preventer testing system |
| 07/22/2008 | US7401646 Methods for reverse-circulation cementing in subterranean formations |
| 07/22/2008 | CA2521459C Apparatus and methods for reducing stand-off effects of a downhole tool |
| 07/22/2008 | CA2493518C System and method for sensing load on a downhole tool |
| 07/22/2008 | CA2486582C Parameter sensing apparatus and method for subterranean wells |
| 07/22/2008 | CA2484537C Telemetry downhole system and method |
| 07/22/2008 | CA2440876C Method of forming a trenchless flowline |
| 07/18/2008 | CA2611067A1 Fluid characterization from acoustic logging data |
| 07/17/2008 | WO2008086463A1 System for measuring stress in downhole tubulars |
| 07/17/2008 | WO2008085675A1 Method and apparatus for performing laser operations downhole |
| 07/17/2008 | WO2008085642A2 Device and method for measuring a property in a downhole apparatus |
| 07/17/2008 | WO2008085059A1 Motion detector |
| 07/17/2008 | WO2008084181A1 System and method for using one or more thermal sensor probes for flow analysis, flow assurance and pipe condition monitoring of a pipeline for flowing hydrocarbons |
| 07/17/2008 | WO2008084162A2 Controllably-deformable inflatable sleeve, production method thereof and use of same for pressure metering applications |
| 07/17/2008 | CA2677918A1 System for measuring stress in downhole tubulars |
| 07/16/2008 | CN201087727Y Pressure-selecting control mechanism of pressure-selecting control test switch valve |
| 07/16/2008 | CN101223335A Method and apparatus for collecting drill bit performance data |
| 07/16/2008 | CN101220742A Modulation transmitting and analyzing device for sound wave in oil well solid phase medium |
| 07/16/2008 | CN101220741A Hole depth sensing |
| 07/15/2008 | US7400263 Method and system for performing operations and for improving production in wells |
| 07/15/2008 | US7400262 Apparatus and methods for self-powered communication and sensor network |
| 07/15/2008 | US7398837 Drill bit assembly with a logging device |
| 07/15/2008 | US7398680 Tracking fluid displacement along a wellbore using real time temperature measurements |
| 07/15/2008 | CA2539625C Apparatus and method for expanding a liner patch |
| 07/15/2008 | CA2502305C Mud pulse landing assembly for use in directional drilling |
| 07/15/2008 | CA2500610C Well control using pressure while drilling measurements |
| 07/15/2008 | CA2499381C Apparatus and method for pressure-compensated telemetry and power generation in a borehole |
| 07/15/2008 | CA2423232C Improved well testing system |
| 07/15/2008 | CA2187010C Method and appartus for remote control of wellbore end devices |
| 07/10/2008 | WO2008083230A1 Oilfield analysis system and method |
| 07/10/2008 | WO2008083049A2 Deployment tool for well logging instruments conveyed through the interior of a pipe string |
| 07/10/2008 | WO2008083016A2 Sensing tool |
| 07/10/2008 | WO2008081467A1 A process utilizing natural carbon-13 isotope for identification of early breakthrough of injection water in oil wells |
| 07/10/2008 | WO2008060769A3 Providing a sensor array |
| 07/10/2008 | US20080166099 Optical fiber feedthrough using axial seals for bi-directional sealing |
| 07/10/2008 | US20080165026 Hole depth sensing |
| 07/10/2008 | US20080164063 Device and Method for Measuring a Property in a Downhole Apparatus |
| 07/10/2008 | US20080164025 System and Method for Determining the Rotational Alignment of Drillstring Elements |
| 07/10/2008 | US20080164024 Method and Apparatus for Utilizing Pressure Signature in Conjunction with Fall Time As Indicator in Oil and Gas Wells |
| 07/10/2008 | US20080164022 System and method for testing tubular well products |
| 07/10/2008 | US20080163681 Real Time Viscometer |
| 07/10/2008 | CA2674580A1 Oilfield analysis system and method |
| 07/10/2008 | CA2674127A1 A process utilizing natural carbon-13 isotope for identification of early breakthrough of injection water in oil wells |
| 07/10/2008 | CA2671548A1 Sensing tool |
| 07/09/2008 | EP1941303A2 Logging system, method of logging an earth formation and method of producing a hydrocarbon fluid |
| 07/09/2008 | EP1941130A2 Method for mechanical and capillary seal analysis of a hydrocarbon trap |
| 07/09/2008 | EP1941129A1 Methods and systems for determining reservoir properties of subterranean formations with pre-existing fractures |
| 07/09/2008 | EP1556576B1 Drill pipe having an internally coated electrical pathway |
| 07/09/2008 | CN201083126Y Separated multi-arm well diameter measuring device |
| 07/09/2008 | CN201083125Y High-temperature high-pressure testing cable for oil field horizontal well heating power exploitation |
| 07/09/2008 | CN201083123Y Double-allocation mode eccentric center water-distributing device |
| 07/09/2008 | CN201083101Y Integrated dual-purpose tool |
| 07/09/2008 | CN201083098Y Well head reinforcing device for steel wire salvaging and testing |
| 07/09/2008 | CN101215965A Well drilling method sinking ultrasonic measurement instrument |
| 07/09/2008 | CN100401107C Method for using pulsed field gradient NMR measurements to determine fluid properties in a fluid sampling well logging tool |
| 07/09/2008 | CN100401106C Adaptive borehole assembly visualization in a three-dimensional scene |
| 07/09/2008 | CN100401105C Dynamic generation of vector graphics and animation of bottom hole assembly |
| 07/09/2008 | CN100401098C Through tubing real time downhole wireless gauge |
| 07/09/2008 | CN100400794C Method and system for accessing substerranean deposits from the surface |
| 07/09/2008 | CN100400793C Methods and systems for heating a hydrocarbon containing formation in situ with an opening contacting the earth's surface at two locations |
| 07/08/2008 | US7397388 Borehold telemetry system |
| 07/08/2008 | US7395897 Accelerated weight drop configurable for use as a shear wave seismic energy source and a method of operation thereof |
| 07/08/2008 | US7395879 MWD formation tester |
| 07/08/2008 | US7395878 Drilling system and method |
| 07/08/2008 | US7395712 Testing of bottomhole samplers using acoustics |
| 07/08/2008 | US7395704 Method and apparatus for downhole fluid analysis using molecularly imprinted polymers |
| 07/08/2008 | CA2487783C Apparatus and method for addressing borehole eccentricity effects |
| 07/08/2008 | CA2481233C Replaceable electrical device for drilling tool |
| 07/08/2008 | CA2465743C Adjustable deployment apparatus for an actively clamped tubing-conveyed in-well seismic station |
| 07/08/2008 | CA2460100C Power source regulation along a transmission line with feedback loop |
| 07/03/2008 | WO2008078060A1 A system and method for robustly and accurately obtaining a pore pressure measurement of a subsurface formation penetrated by a wellbore |
| 07/03/2008 | WO2008051945A3 Breathable downhole fiber optic cable and a method of restoring performance |
| 07/03/2008 | WO2008021881A3 Method of applying a string of interconnected strain sensors to an object, a pliable support structure, and method of producing a mineral hydrocarbon fluid |
| 07/03/2008 | WO2007018860A8 Well modeling associated with extraction of hydrocarbons from subsurface formations |
| 07/03/2008 | US20080160833 Wire-line connection system |
| 07/03/2008 | US20080158006 Wireless telemetry between wellbore tools |
| 07/03/2008 | US20080158004 Method and apparatus for downloading while drilling data |
| 07/03/2008 | US20080156977 Methods and systems for determining mud flow velocity from measurement of an amplitude of an artificially induced radiation |
| 07/03/2008 | US20080156535 Wellbore treatment apparatus and method |
| 07/03/2008 | US20080156534 Integrated Electrode Resistivity and EM Telemetry Tool |
| 07/03/2008 | US20080156533 Spectrograph tool |
| 07/03/2008 | US20080156532 Flow density tool |
| 07/03/2008 | US20080156485 Wellbore steering system and method |
| 07/03/2008 | US20080156484 Method and system for altering pore pressure in a fracturing operation |
| 07/03/2008 | DE102007062230A1 Hybrid telemetry system for wellsite system, has cable that extends from downhole connector to uphole connector |