| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 07/26/2006 | CN2799859Y Apparatus for controlling water injection amount in single well when metering |
| 07/26/2006 | CN2799857Y Well mouth filtering device for high pressure water flooding |
| 07/26/2006 | CN1807833A Slips type down-hole instrument hanger |
| 07/25/2006 | US7082078 Magnetorheological fluid controlled mud pulser |
| 07/25/2006 | US7081615 Methods and apparatus for the downhole characterization of formation fluids |
| 07/25/2006 | US7080998 Internal coaxial cable seal system |
| 07/25/2006 | US7080699 Wellbore communication system |
| 07/25/2006 | US7080698 Mapping tool for tracking and/or guiding an underground boring tool |
| 07/25/2006 | US7080689 Instrumentation assembly for an offshore riser |
| 07/25/2006 | US7080544 Apparatus system and method for gas well site monitoring |
| 07/25/2006 | US7080460 Determining a borehole azimuth from tool face measurements |
| 07/25/2006 | CA2425565C Magnetic sensor system useful for detecting tool joints in a downhold tubing string |
| 07/25/2006 | CA2403293C Apparatus to actuate downhole tool |
| 07/25/2006 | CA2286014C Pressure impulse telemetry apparatus and method |
| 07/20/2006 | WO2006075337A2 Apparatus and method for monitoring remotely located sucker rod pumps |
| 07/20/2006 | US20060161289 Drilling apparatus |
| 07/20/2006 | US20060158296 Inductive Coupler for Downhole Components and Method for Making Same |
| 07/20/2006 | US20060158194 Boring technique using locate point measurements for boring tool depth prediction |
| 07/20/2006 | US20060158193 Flux orientation locating in a drilling system |
| 07/20/2006 | US20060157281 Bi-directional rotary steerable system actuator assembly and method |
| 07/20/2006 | US20060157278 Centralizer-based survey and navigation device and method |
| 07/20/2006 | US20060157277 Method and system of controlling drilling direction using directionally sensitive resistivity readings |
| 07/20/2006 | US20060157240 Methods and apparatus for monitoring components of downhole tools |
| 07/20/2006 | US20060157239 Method and apparatus for logging a well using a fiber optic line and sensors |
| 07/20/2006 | US20060157238 Inhibiting breakthrough of driving fluid via a permeable geological layer into an oil production well |
| 07/20/2006 | DE102004003479B4 Bohrgestänge für Tiefbohrungen Drill pipe for deep drilling |
| 07/19/2006 | EP1509677B1 Apparatus and method for minimizing wear and wear related measurement error in a logging-while-drilling tool |
| 07/19/2006 | EP1166476B1 Method and apparatus for data communication with an underground instrument package |
| 07/19/2006 | CN2797628Y Corrosion-proof single direction joint tube for flow-rate testing regulating apparatus |
| 07/19/2006 | CN2797627Y Electric opening and closing mechanism for flow-rate testing and regulating apparatus |
| 07/19/2006 | CN2797626Y Oil field testing blowout preventer |
| 07/19/2006 | CN2797623Y Sand-proof separator |
| 07/19/2006 | CN1806091A System and method for transmitting electric power into a bore |
| 07/19/2006 | CN1804371A Pile foundation boring aperture measurer |
| 07/19/2006 | CN1804370A Cable controlled separate layer production and test technology for oil well |
| 07/19/2006 | CN1265076C Sensor arranging device and method for measuring property parameters of underground stratum |
| 07/18/2006 | US7078905 Bore location system |
| 07/18/2006 | US7077204 Whip retrieval method and apparatus |
| 07/18/2006 | US7077200 Downhole light system and methods of use |
| 07/18/2006 | US7077199 In situ thermal processing of an oil reservoir formation |
| 07/18/2006 | US7077198 In situ recovery from a hydrocarbon containing formation using barriers |
| 07/18/2006 | CA2412385C A graphical method for designing the trajectory of a well bore |
| 07/18/2006 | CA2403740C Method of predicting formation temperature |
| 07/18/2006 | CA2381281C Apparatus for optimizing production of multi-phase fluid |
| 07/18/2006 | CA2371420C Apparatus and method for controlling fluid flow in a wellbore |
| 07/18/2006 | CA2365310C Wellbore primary barrier and related systems |
| 07/18/2006 | CA2284456C Earth formation pressure measurement with penetrating probe |
| 07/18/2006 | CA2253574C Multi-lateral wellbore systems and methods for forming same |
| 07/13/2006 | WO2006072274A1 System and method for measuring flow in a pipeline |
| 07/13/2006 | WO2005033742A8 Multi-pole transmitter source |
| 07/13/2006 | US20060155474 System and methods of deriving fluid properties of downhole fluids and uncertainty thereof |
| 07/13/2006 | US20060153508 System and method for deploying an optical fiber in a well |
| 07/13/2006 | US20060153487 System and method for packaging a fibre optic sensor |
| 07/13/2006 | US20060152383 Methods and apparatus for electro-optical hybrid telemetry |
| 07/13/2006 | US20060151214 Geometrical optimization of multi-well trajectories |
| 07/13/2006 | US20060151213 Sonde housing and method of manufacture |
| 07/13/2006 | US20060151211 Transmitting electric power into a bore hole |
| 07/13/2006 | US20060151179 Apparatus and method for transmitting a signal in a wellbore |
| 07/13/2006 | US20060150727 Free point tool with low mass sensor |
| 07/13/2006 | US20060150430 Pre-mounting of a sensor |
| 07/12/2006 | EP1678541A1 Telecommunication optical cable for gas pipeline application having built-in leakage detecting device |
| 07/12/2006 | EP1283940B1 Hydraulically operated fluid metering apparatus for use in a subterranean well |
| 07/12/2006 | EP1280977B1 Measuring device for detecting a body moving in relation to a tubular container |
| 07/12/2006 | CN2795442Y Logging unblocked device |
| 07/11/2006 | US7075454 Power generation using batteries with reconfigurable discharge |
| 07/11/2006 | US7075062 Apparatus and methods for downhole determination of characteristics of formation fluids |
| 07/11/2006 | US7073609 Apparatus and methods for imaging wells drilled with oil-based muds |
| 07/11/2006 | US7073594 Wireless downhole well interval inflow and injection control |
| 07/11/2006 | US7073590 Dual energized hydroseal |
| 07/11/2006 | US7073582 Method and apparatus for positioning a downhole tool |
| 07/11/2006 | US7073581 Electroconductive proppant compositions and related methods |
| 07/11/2006 | US7073580 Inflation tool with real-time temperature and pressure probes |
| 07/11/2006 | US7073579 Methods of downhole testing subterranean formations and associated apparatus therefor |
| 07/11/2006 | US7073578 Staged and/or patterned heating during in situ thermal processing of a hydrocarbon containing formation |
| 07/11/2006 | CA2532436A1 System and methods of deriving fluid properties of downhole fluids and uncertainty thereof |
| 07/11/2006 | CA2405775C Downhole flow meter |
| 07/11/2006 | CA2262916C Subsea template electromagnetic telemetry |
| 07/11/2006 | CA2165017C Drilling system with downhole apparatus for transforming multiple dowhole sensor measurements into parameters of interest and for causing the drilling direction to change in response thereto |
| 07/11/2006 | CA2164377C Method and equipment for performing measurements while drilling for oil and gas |
| 07/11/2006 | CA2136905C Measurement of stand-off distance and drilling fluid sound speed while drilling |
| 07/06/2006 | WO2006070239A2 Methods and apparatus for electro-optical hybrid telemetry |
| 07/06/2006 | WO2005124395A3 Methods and apparatus for measuring streaming potentials and determining earth formation characteristics |
| 07/06/2006 | US20060149477 Measurement-while-drilling assembly using real-time toolface oriented measurements |
| 07/06/2006 | US20060144588 Method for determining tracer concentration in oil and gas production fluids |
| 07/06/2006 | CA2592280A1 Methods and apparatus for electro-optical hybrid telemetry |
| 07/05/2006 | EP1676976A1 Drawdown apparatus and method for in-situ analysis of formation fluids |
| 07/05/2006 | EP1676101A2 Inferential densometer and mass flowmeter |
| 07/05/2006 | EP1676015A1 Make-up control system for tubulars |
| 07/05/2006 | CN2793323Y Temperature and pressure measuring sleeve of oil gas well |
| 07/05/2006 | CN2793322Y Checker of pulse-code simulating instrument |
| 07/05/2006 | CN2793321Y Flexible butt-jointed cable transferring device with hydraulic pump delivery for horizontal well |
| 07/05/2006 | CN2793295Y Eccentric two-way oil pipe anchor with fixed torque |
| 07/05/2006 | CN1262736C Over pumping high and low temperature direct reading monitoring system |
| 07/04/2006 | US7072588 Multiplexed distribution of optical power |
| 07/04/2006 | US7072044 Apparatus for acoustic detection of particles in a flow using a fiber optic interferometer |
| 07/04/2006 | US7071837 Data transmission in pipeline systems |
| 07/04/2006 | US7071697 Centralizer including measurement means |
| 07/04/2006 | US7071696 Measurement device and support for use in a well |
| 07/04/2006 | US7071695 Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal |
| 07/04/2006 | US7069998 Fuel cell for downhole and subsea power systems |