| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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| 04/20/2006 | WO2006041308A2 System and method for wireless data transmission |
| 04/20/2006 | WO2006041306A1 Electronic ID tag and co-operating antenna |
| 04/20/2006 | WO2004072793A3 Downhole telemetry system using discrete multi-tone modulation with adaptive noise cancellation |
| 04/20/2006 | US20060085134 Downhole recorder system |
| 04/20/2006 | US20060081380 Collar locator for slick pump |
| 04/20/2006 | CA2587147A1 Electronic id tag and co-operating antenna |
| 04/20/2006 | CA2583693A1 Method for hydrocarbon reservoir monitoring |
| 04/20/2006 | CA2583290A1 System and method for wireless communication in a producing well system |
| 04/20/2006 | CA2583286A1 System and method for wireless data transmission |
| 04/20/2006 | CA2580685A1 Surface instrumentation configuration for a drilling rig operation |
| 04/19/2006 | EP1647669A1 Method for determining a stuck point for pipe, and free point logging tool |
| 04/19/2006 | EP1646765A1 Electrical imaging in conductive and non-conductive mud |
| 04/19/2006 | EP1086294B1 Method and system for measuring data in a fluid transportation conduit |
| 04/19/2006 | EP0857249B1 Closed loop drilling system |
| 04/19/2006 | CN1760695A Storing type apparatus for measuring radioactive energy spectrum |
| 04/19/2006 | CN1760506A Sensor of direction of deflection |
| 04/19/2006 | CN1760505A Distributed well logging system based on Ethernet |
| 04/19/2006 | CN1760501A Positioning-method and devices through bi-directional bores |
| 04/19/2006 | CN1252442C Three dimensional collinear measuring ring for drill hole inclination survey and axial deformation |
| 04/19/2006 | CN1252373C Well repairing system and its method |
| 04/18/2006 | US7031841 Method for determining pressure of earth formations |
| 04/18/2006 | US7028779 Auto-extending/retracting electrically isolated conductors in a segmented drill string |
| 04/18/2006 | US7028773 Assessing downhole WBM-contaminated connate water |
| 04/18/2006 | US7028772 Treatment well tiltmeter system |
| 04/18/2006 | US7028543 System and method for monitoring performance of downhole equipment using fiber optic based sensors |
| 04/18/2006 | US7028409 Method for computation of differential azimuth from spaced-apart gravity component measurements |
| 04/18/2006 | CA2187434C Computer controlled downhole tools for production well control |
| 04/18/2006 | CA2187424C Method and apparatus for the remote control and monitoring of production wells |
| 04/13/2006 | US20060076956 Tracing injected fluids |
| 04/13/2006 | US20060076347 In situ processing of hydrocarbon-bearing formations with automatic impedance matching radio frequency dielectric heating |
| 04/13/2006 | US20060076161 Apparatus and method of identifying rock properties while drilling |
| 04/13/2006 | US20060075645 Method and apparatus for mapping the trajectory in the subsurface of a borehole |
| 04/13/2006 | DE102005045980A1 Vorrichtungen und Verfahren zum Verringern von Abstandseffekten eines Bohrlochwerkzeugs Devices and methods for reducing a downhole tool standoff effects |
| 04/12/2006 | EP1644612A1 Determination of the orientation and/or position of the downhole device |
| 04/12/2006 | EP1238483A4 Method for compensating for remote clock offset |
| 04/12/2006 | CN2771478Y Fully-automatic weighing gas-liquid two-phase oil well metering device |
| 04/12/2006 | CN2771477Y Flow adjustable water injection well choke |
| 04/12/2006 | CN2771476Y Blow-out preventing pipe |
| 04/12/2006 | CN1757880A Drilling machine wired tramp instrument |
| 04/12/2006 | CN1757879A Comprehensive experimental system of hydrate exploitation technology |
| 04/12/2006 | CN1757878A Construction method of optical fiber television logging instrument for detecting fish top detection |
| 04/11/2006 | US7027928 System and method for determining formation fluid parameters |
| 04/11/2006 | US7027926 Enhanced measurement of azimuthal dependence of subterranean parameters |
| 04/11/2006 | US7027925 Adaptive borehole assembly visualization in a three-dimensional scene |
| 04/11/2006 | US7027922 Deep resistivity transient method for MWD applications using asymptotic filtering |
| 04/11/2006 | US7026951 Data telemetry system for multi-conductor wirelines |
| 04/11/2006 | US7026950 Motor pulse controller |
| 04/11/2006 | US7025154 Method and system for circulating fluid in a well system |
| 04/11/2006 | US7025143 Method for removing a deposit using pulsed fluid flow |
| 04/11/2006 | US7025138 Method and apparatus for hydrogen sulfide monitoring |
| 04/11/2006 | US7025130 Methods and apparatus to control downhole tools |
| 04/11/2006 | US7024930 Method for measuring formation properties with a time-limited formation test |
| 04/07/2006 | CA2519822A1 Apparatus and method of identifying rock properties while drilling |
| 04/06/2006 | WO2006037079A2 Apparatus and method for wireline imaging in nonconductive muds |
| 04/06/2006 | WO2006037020A2 Single solenoid guide system |
| 04/06/2006 | US20060073722 Telescopic data coupler |
| 04/06/2006 | US20060072374 Measurement while drilling bi-directional pulser operating in a near laminar annular flow channel |
| 04/06/2006 | US20060071809 Method for collecting geological data from a well bore using casing mounted sensor |
| 04/06/2006 | US20060070770 Measuring the weight on a drill bit during drilling operations using coherent radiation |
| 04/06/2006 | US20060070734 System and method for determining forces on a load-bearing tool in a wellbore |
| 04/06/2006 | US20060070733 System, method, and apparatus for survey tool having roller knuckle joints for use in highly deviated horizontal wells |
| 04/06/2006 | US20060070731 Stabilizer for a rod, particularly a string of drilling rods |
| 04/06/2006 | US20060070434 2D central difference level set projection method for ink-jet simulations |
| 04/06/2006 | US20060070433 Borehole caliper tool using ultrasonic transducer |
| 04/06/2006 | US20060070432 Gravity techniques for drilling and logging |
| 04/06/2006 | CA2581716A1 Single solenoid guide system |
| 04/06/2006 | CA2581535A1 Apparatus and method for wireline imaging in nonconductive muds |
| 04/06/2006 | CA2522125A1 A system and method for determining forces on a load-bearing tool in a wellbore |
| 04/05/2006 | EP1643602A1 Energized slip ring assembly |
| 04/05/2006 | EP1642002A1 Downhole Data Communication |
| 04/05/2006 | EP1354432B1 Data transmission in pipeline systems |
| 04/05/2006 | EP1116350B1 Drill string telemetry with insulator between receiver and transmitter |
| 04/05/2006 | EP1040251A4 Method to determine self-calibrated circumferential cased bond impedance |
| 04/05/2006 | CN2769874Y Liquid-filling pipe column leakage tester |
| 04/05/2006 | CN2769873Y Helical type oil-water well pressed operating loading indicator |
| 04/05/2006 | CN2769513Y One-way spiral conic regulating rod |
| 04/05/2006 | CN2769512Y Logging instrument graduation check up tool |
| 04/05/2006 | CN1756893A Method and system for cause-effect time lapse analysis |
| 04/05/2006 | CN1249328C Method and appts. for monitoring advance of seawater into fresh water aquifers near coastal cities |
| 04/05/2006 | CN1249327C Sand screen with integrated sensors |
| 04/04/2006 | US7021403 Method of establishing positions of locating field detectors and path mapping in underground boring tool applications |
| 04/04/2006 | US7021388 Fibre optic well control system |
| 04/04/2006 | US7021137 Apparatus for rapidly measuring liquid levels and volume of groundwater within wells that eliminates cross contamination between wells |
| 04/04/2006 | CA2383627C Method for repeating messages in long intelligent completion system lines |
| 03/30/2006 | WO2006033661A1 Method and apparatus for generating acoustic signals for lwd shear velocity measurement |
| 03/30/2006 | WO2006032490A1 An apparatus for measuring an internal dimension of a well-bore |
| 03/30/2006 | WO2005119390A3 Real time subsea monitoring and control system for pipelines |
| 03/30/2006 | US20060066301 Extended range emf antenna |
| 03/30/2006 | US20060065798 Locking clips for retaining parallel members |
| 03/30/2006 | US20060065441 Single solenoid guide system |
| 03/30/2006 | US20060065440 Method and apparatus for determining drill string movement mode |
| 03/30/2006 | US20060065402 Drilling system and method for controlling equivalent circulating density during drilling of wellbores |
| 03/30/2006 | US20060065400 Method and apparatus for stimulating a subterranean formation using liquefied natural gas |
| 03/30/2006 | US20060065397 Injecting into a subterranean formation a slurry of a proppant coated with a tackifying agent or a curable resin, a fracturing fluid, and degradable particulates that physically interact with themselves and with the proppant to induce tip screenout |
| 03/30/2006 | US20060065395 Removable Equipment Housing for Downhole Measurements |
| 03/30/2006 | US20060065394 Apparatus and methods for reducing stand-off effects of a downhole tool |
| 03/30/2006 | US20060065393 Use of fiber optics in deviated flows |
| 03/30/2006 | CA2581090A1 An apparatus for measuring an internal dimension of a well-bore |
| 03/29/2006 | EP1640561A1 An apparatus for measuring an internal dimension of a well-bore |
| 03/29/2006 | EP1552274A4 Borehole conductivity profiler |