| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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| 09/22/2005 | WO2005001232A3 Determination of thermal properties of a formation |
| 09/22/2005 | US20050209782 Rotary downlink system |
| 09/22/2005 | US20050207279 Apparatus and methods for self-powered communication and sensor network |
| 09/22/2005 | US20050205304 Tool module connector for use in directional drilling |
| 09/22/2005 | US20050205302 Hydraulic and mechanical noise isolation for improved formation testing |
| 09/22/2005 | US20050205301 Testing of bottomhole samplers using acoustics |
| 09/22/2005 | US20050205300 Seismic measurements while drilling |
| 09/22/2005 | US20050205299 Sonde housing and method of manufacture |
| 09/22/2005 | US20050205268 Method and apparatus for generation of acoustic shear waves through casing using physical coupling of vibrating magnets |
| 09/22/2005 | US20050205257 Viscosity control and filtration of well fluids |
| 09/22/2005 | US20050205255 Fluids comprising reflective particles and methods of using the same to determine the size of a wellbore annulus |
| 09/22/2005 | US20050205248 Use of electromagnetic acoustic transducers in downhole cement evaluation |
| 09/22/2005 | US20050204809 Parallel seismic depth testing using a cone penetrometer |
| 09/22/2005 | DE102005008430A1 Verfahren und Vorrichtung zum Bohren eines Bohrlochs von einem entfernten Ort aus Method and apparatus for drilling a borehole from a remote location |
| 09/22/2005 | DE102004010114A1 Laser-based measurement equipment for positioning e.g. pipe driving machine, has computer to automatically inquire angles and lengths of machine, where angles and lengths are used for positional computation of machine |
| 09/22/2005 | CA2789735A1 Providing a local response to a local condition in an oil well |
| 09/22/2005 | CA2789217A1 Drilling method |
| 09/22/2005 | CA2789215A1 Drilling with a muscular drill string |
| 09/22/2005 | CA2789181A1 System for controlling oil well drill dynamics |
| 09/22/2005 | CA2558238A1 Downhole formation sampling |
| 09/21/2005 | EP1577488A1 Borehole tool |
| 09/21/2005 | CN2727396Y Acoustic sonde apparatus of acoustic logging instrument for horizontal well |
| 09/21/2005 | CN2727395Y High temperature high pressure optical waveguide well logging system |
| 09/21/2005 | CN2727394Y Direct-reading long term dynamic monitoring device for machine production well |
| 09/21/2005 | CN2727393Y Ratchet mechanism for ejecting and retracting regulating arm of downhole measuring and regulating apparatus |
| 09/21/2005 | CN2727392Y Downhole measuring and regulating apparatus with an overhead flowmeter |
| 09/21/2005 | CN2727391Y Separator for measuring water ratio of oil well |
| 09/21/2005 | CN1672032A In-situ detection and analysis of coal bed methane formations with optical instruments and methods and apparatus to facilitate methane production and analysis |
| 09/21/2005 | CN1671944A Installation and use of removable heaters in a hydrocarbon containing formation |
| 09/21/2005 | CN1670332A Method for determining mud penetrating depth of water-exclusion marine drilling pipe |
| 09/21/2005 | CN1670331A Single arm clamp piston of petroleum exploration device |
| 09/21/2005 | CN1219962C Method and device for measuring physical parameter in production shaft of deposit of underground fluid storage reservoir |
| 09/20/2005 | US6945755 Fluid controlled pumping system and method |
| 09/20/2005 | US6945095 Non-intrusive multiphase flow meter |
| 09/20/2005 | CA2393579C Method for compensating for remote clock offset |
| 09/20/2005 | CA2347895C Expandable patch for a wellbore tubular |
| 09/15/2005 | WO2005085590A1 System and method for optimizing production in a artificially lifted well |
| 09/15/2005 | WO2005085588A1 Annular pressure relief collar |
| 09/15/2005 | WO2005084246A2 Safemode operating system for a drilling or service rig |
| 09/15/2005 | WO2005048459A3 Signalling method and apparatus |
| 09/15/2005 | US20050200498 Multiple distributed sensors along a drillstring |
| 09/15/2005 | US20050200210 Apparatus and method for generating electrical power in a borehole |
| 09/15/2005 | US20050199794 Spectral gamma ray logging-while-drilling system |
| 09/15/2005 | US20050199425 Magnetometers for measurement-while-drilling applications |
| 09/15/2005 | US20050199424 Apparatus and method for horizontal drilling |
| 09/15/2005 | US20050199423 High frequency pressure compensator |
| 09/15/2005 | US20050199394 Production Profile Determination and Modification System |
| 09/15/2005 | US20050199393 Logging-while-coring method and apparatus |
| 09/15/2005 | US20050199392 Method and apparatus for positioning a downhole tool |
| 09/15/2005 | US20050199389 Wellhead and control stack pressure test plug tool |
| 09/15/2005 | US20050199388 Safemode operating system for a drilling or service rig |
| 09/15/2005 | US20050199386 In situ processing of hydrocarbon-bearing formations with variable frequency automated capacitive radio frequency dielectric heating |
| 09/15/2005 | US20050199053 Pressure monitoring technique |
| 09/15/2005 | CA2842939A1 Spectral gamma ray logging-while-drilling system |
| 09/15/2005 | CA2842938A1 Spectral gamma ray logging-while-drilling system |
| 09/15/2005 | CA2497355A1 Spectral gamma ray logging-while-drilling system |
| 09/14/2005 | EP1573170A1 Method and system for circulating fluid in a well system |
| 09/14/2005 | EP1395729B1 Method of forming a trenchless flowline |
| 09/14/2005 | EP1354126B1 A pressure pulse generator |
| 09/14/2005 | EP1099101B1 Non-intrusive fiber optic pressure sensor for measuring unsteady pressures within a pipe |
| 09/14/2005 | CN2725529Y Electron single multipoint measuring instrument |
| 09/14/2005 | CN2725528Y Pressure meter antifreezing device |
| 09/14/2005 | CN2725527Y Under well float-type flow meter |
| 09/14/2005 | CN2725526Y Oil field filling movable centralized control working station |
| 09/14/2005 | CN2725525Y Water level and water temperature automatic collecting device for downhole |
| 09/14/2005 | CN2725524Y Gas tracer filling device |
| 09/14/2005 | CN1668940A Marking of pipe joints |
| 09/14/2005 | CN1667241A Symbolic gas detecting, regulating and controlling method for underground coal gasification |
| 09/13/2005 | US6944563 On-line compositional allocation |
| 09/13/2005 | US6944548 Formation evaluation through azimuthal measurements |
| 09/13/2005 | US6944545 System and method for determining the inclination of a wellbore |
| 09/13/2005 | US6943697 Reservoir management system and method |
| 09/13/2005 | US6943340 Method and apparatus of providing an optical fiber along a power supply line |
| 09/13/2005 | US6942043 Modular design for LWD/MWD collars |
| 09/13/2005 | US6942034 Extent of detonation determination method using seismic energy |
| 09/13/2005 | CA2187487C Rotating magnet for distance and direction measurements |
| 09/12/2005 | CA2460788A1 Magnetic field enhancement for use in passive ranging |
| 09/09/2005 | WO2005081993A2 A downhole positioning system |
| 09/08/2005 | US20050197781 Seismic monitoring and control method |
| 09/08/2005 | US20050194186 Apparatus and method for pressure-compensated telemetry and power generation in a borehole |
| 09/08/2005 | US20050194185 Multiple distributed force measurements |
| 09/08/2005 | US20050194184 Multiple distributed pressure measurements |
| 09/08/2005 | US20050194183 Providing a local response to a local condition in an oil well |
| 09/08/2005 | US20050194150 Distributed temperature sensing in deep water subsea tree completions |
| 09/08/2005 | US20050194149 Thermal actuated plunger |
| 09/08/2005 | US20050194134 Downhole formation sampling |
| 09/08/2005 | US20050194132 Borehole marking devices and methods |
| 09/08/2005 | US20050194131 Oil production optimization and enhanced recovery method and apparatus for oil fields with high gas-to-oil ratio |
| 09/08/2005 | US20050193811 Method and system for detecting conditions inside a wellbore |
| 09/07/2005 | EP1570157A1 Data transmission device |
| 09/07/2005 | EP1570156A2 Drilling a borehole |
| 09/07/2005 | CN2723676Y Circuit for detecting drilling liquid loss |
| 09/07/2005 | CN2723675Y Detactable wellhead device of screw rod pump oil production system |
| 09/07/2005 | CN1666006A Methods and systems for heating a hydrocarbon containing formation in situ with an opening contacting the earth's surface at two locations |
| 09/07/2005 | CN1664309A System for performing operations and for improving production in wells |
| 09/07/2005 | CN1664308A Wellbore drilling system and method |
| 09/07/2005 | CN1664304A Split diameter-changing oil testing swab |
| 09/07/2005 | CN1218114C Monitor system for drilling procedure |
| 09/06/2005 | US6940420 Drill string telemetry system |
| 09/06/2005 | US6940245 Downhole compressor system with a feedback sensor |