Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 47 - Survey of boreholes or wells
Patents for E21B 47 - Survey of boreholes or wells (31,352)
09/2003
09/17/2003CN1442601A Over pumping high and low temperature direct reading monitoring system
09/16/2003US6619402 System for enhancing fluid flow in a well
09/16/2003US6619395 Methods for determining characteristics of earth formations
09/16/2003CA2322844C Clamped receiver array using coiled tubing conveyed packer elements
09/12/2003WO2003074836A1 Conductor system
09/11/2003US20030168218 Conductor system
09/11/2003US20030168213 Extent of detonation determination method using seismic energy
09/10/2003CN2572001Y Adjustable survey seal section
09/10/2003CN1441871A Sand screen with integrated sensors
09/09/2003US6618677 Method and apparatus for determining flow rates
09/09/2003US6618675 Speed correction using cable tension
09/09/2003US6617854 Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal
09/09/2003US6615925 Pump control method and apparatus
09/09/2003US6615924 Apparatus and system control for the removal of fluids and gas from a well
09/09/2003US6615917 Computer controlled injection wells
09/09/2003US6615916 Method of saving string of tools installed in an oil well and a corresponding transmission assembly
09/04/2003US20030164706 Method and apparatus for full offset resistivity imaging for use in boreholes
09/04/2003US20030164249 Boring technique using locate point measurements for boring tool depth prediction
09/04/2003US20030164240 Controllable gas-lift well and valve
09/04/2003US20030164038 Acoustic sensor for fluid characterization
09/04/2003US20030164037 Pressure sensor assembly for wellbore
09/03/2003EP1340069A2 Spectral power ratio method and system for detecting drill bit failure and signaling surface operator
09/03/2003EP1339951A2 Method and device for determining the quality of an oil well reserve
09/03/2003CN2570744Y Downhole through-annular float-ball electromagnetic induction flowmeter
09/03/2003CN2570734Y Frame gyroscope and flexible gyroscope combination measuring azimuth finder
09/03/2003CN2570457Y Caliper having double gauge beams
09/03/2003CN2570456Y Logging instrumentation metal case insulating apparatus
09/03/2003CN1440485A Well managment System
09/03/2003CN1120285C Apparatus and device for drilling and logging holes in same formation
09/02/2003US6614229 System and method for monitoring a reservoir and placing a borehole using a modified tubular
09/02/2003US6612547 Downhole flow control devices
09/02/2003CA2055223C Method and device for operations in high temperature wellbore
08/2003
08/28/2003WO2003071245A2 Pressure reading tool
08/28/2003WO2003071097A1 Acoustic position measurement system for well bore formation
08/28/2003WO2003035811A8 Remediation of a hydrocarbon containing formation
08/28/2003US20030159823 Method and device for the measuring physical parameters in a production shaft of a deposit of underground fluid storage reservoir
08/28/2003CA2474665A1 Acoustic position measurement system for well bore formation
08/27/2003EP1068425B1 Drillstring with stabilisers for re-entering a primary wellbore
08/27/2003CN2568812Y Digital positioning depth finder
08/27/2003CN1438404A Well-logging analysis method not depending on radial-flow straightway
08/27/2003CN1119502C Method and system for measuring data in fluid transportation conduit
08/26/2003US6610441 Annular pack
08/26/2003US6609568 Closed-loop drawdown apparatus and method for in-situ analysis of formation fluids
08/21/2003WO2003069120A2 Dual channel downhole telemetry
08/21/2003WO2003069119A1 Depth correction
08/21/2003WO2003036043A3 Forming openings in a hydrocarbon containing formation using magnetic tracking
08/21/2003US20030155153 Pressure reading tool
08/21/2003US20030155152 Method of conducting in situ measurements of properties of a reservoir fluid
08/21/2003US20030155121 Logging-while-drilling apparatus and methods for measuring density
08/21/2003US20030155120 In-well monitoring and flow control system
08/21/2003CA2472612A1 Depth correction
08/20/2003EP1153199B1 Method and apparatus for protecting a sensor in a drill collar
08/20/2003EP0836667B1 Locating a discrete in-ground boring device
08/20/2003CN2567403Y Gearing for super-low-speed hydraulic logging hoister
08/20/2003CN1437742A Burst QAM Downhole telemetry system
08/19/2003US6608565 Downward communication in a borehole through drill string rotary modulation
08/19/2003US6607044 Three dimensional steerable system and method for steering bit to drill borehole
08/14/2003WO2003067828A1 Automated wellbore apparatus and method based on a centralised bus network
08/14/2003WO2003067201A2 Extend of detonation determination method using seismic energy
08/14/2003WO2003067029A1 Autonomous downhole/reservoir monitoring and data transfer system
08/14/2003WO2003067027A1 Liner top test packer
08/14/2003WO2003067018A2 Well system
08/14/2003WO2003027713A3 Quadrupole acoustic shear wave logging while drilling
08/14/2003US20030151978 Method and apparatus enhanced acoustic mud pulse telemetry
08/14/2003US20030151977 Dual channel downhole telemetry
08/14/2003US20030151522 Method and apparatus for enhanced acoustic mud pulse telemetry during underbalanced drilling
08/14/2003US20030150612 Downhole window finder and method of using the same
08/14/2003US20030150262 Acoustic sensor for fluid characterization
08/14/2003CA2755094A1 Well system
08/14/2003CA2475153A1 Automated wellbore apparatus and method based on a centralised bus network
08/14/2003CA2474911A1 Extend of detonation determination method using seismic energy
08/13/2003EP1335108A2 Apparatus and method for determining a drilling mode to optimize formation evaluation measurements
08/13/2003EP1335107A2 A method for collecting geological data
08/13/2003EP1335106A2 Casing data relay
08/13/2003EP1335105A2 A method for collecting geological data
08/13/2003EP1335104A2 Method for preventing formation fracturing
08/13/2003EP1335103A2 Method of determining the curing of cement downhole
08/13/2003EP1334377A2 Method and apparatus for lwd shear velocity measurement
08/13/2003EP1334261A2 Apparatus and method for formation testing while drilling using combined absolute and differential pressure measurement
08/13/2003EP1144804B1 Method for detecting inflow of fluid in a well while drilling and implementing device
08/13/2003CN1117918C Apparatus and method for determining drilling mode to optimize formation evaluation measurements
08/12/2003US6604910 Fluid controlled pumping system and method
08/12/2003US6604582 Downhole fluid pressure signal generation and transmission
08/12/2003US6604581 Fluid property sensors and associated methods of calibrating sensors in a subterranean well
08/07/2003WO2003064816A1 Probing device with microwave transmission
08/07/2003US20030147360 Automated wellbore apparatus
08/07/2003US20030145987 Measuring the in situ static formation temperature
08/07/2003US20030145986 Differential pressure controller
08/06/2003EP1332356A1 Apparatus for acoustic detection of particles in a flow using a fibre optic interferometer
08/06/2003CN2564752Y Connecting device for drilling and logging instruments
08/06/2003CN1434926A Propagating wave earth formation resistivity measuring arrangement
08/06/2003CN1117280C Automatic well test system and method of operating the same
08/05/2003US6601658 Control method for use with a steerable drilling system
08/05/2003CA2275850C Well logging apparatus
08/05/2003CA2197950C Coiled tubing joint locator and methods
07/2003
07/31/2003WO2003062598A1 System and method for autonomously performing a downhole well operation
07/31/2003WO2003062588A1 Radio frequency identification tags for oil drill strings
07/31/2003WO2003038287A8 Well jet device for testing and studying formations and the operating method thereof
07/31/2003WO2002066921A8 Tubing elongation correction system and methods
07/31/2003WO2002044760A9 Rib-mounted logging-while-drilling (lwd) sensors
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