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1. 发明授权

US6347282B2 Measurement-while-drilling assembly using gyroscopic devices and methods of bias removal 失效
标题翻译：使用陀螺仪测量同步钻孔组件和偏移去除方法
公开(公告)号：US6347282B2
公开(公告)日：2002-02-12
申请号：US20490898
申请日：1998-12-03
申请人： BAKER HUGHES INC
发明人： ESTES ROBERT A , NOY KOEN ANTONIE , KAHN JON B
IPC分类号： E21B47/022 , G01C19/38 , G01V1/48 , G01V3/18
CPC分类号： G01C19/38 , E21B47/022
摘要： This invention provides a measurement-while-drilling (MWD) downhole assembly for use in drilling boreholes which utilizes gyroscopes, magnetometers and accelerometers for determining the borehole inclination and azimuth during the drilling of the borehole. The downhole assembly includes at least one gyroscope that is rotatably mounted in a tool housing to provide signals relating to the earth's rotation. A device in the tool can rotate the gyroscope and other sensors on the tool at any desired degree. A processor in the tool combines measurements from the sensors taken at a plurality of positions at the same depth to determine the systematic bias in the sensors before further processing. Accelerometers in the MWD tool provide gravity measurements from which the toolface and inclination are determined. The unbiased gyroscopic measurements are used in conjunction with the tool face and inclination measurements to determine the azimuth and tool face with respect to true north. Three axially spaced apart magnetometers may be used to correct for local magnetic disturbances. Additionally, when measurements are made with magnetic, accelerometer and gyroscopic measurements along three different axes, the unbiased measurements may be combined to provide an improved determination of the tool orientation.
摘要翻译：本发明提供了一种用于钻孔的钻井测量钻井（MWD）井下组件，其利用陀螺仪，磁力计和加速度计来确定钻孔期间的井眼倾角和方位角。井下组件包括至少一个可旋转地安装在工具壳体中以提供与地球旋转相关的信号的陀螺仪。工具中的设备可以以任何所需的程度旋转陀螺仪和工具上的其他传感器。该工具中的处理器将来自在相同深度的多个位置处获取的传感器的测量结合在一起，以在进一步处理之前确定传感器中的系统偏差。 MWD工具中的加速度计提供了测量工具面和倾斜度的重力测量。无偏差的陀螺仪测量与工具面和倾斜度测量结合使用，以确定相对于真北的方位角和工具面。可以使用三个轴向间隔开的磁力计来校正局部磁扰动。另外，当通过磁性，加速度计和沿着三个不同轴的陀螺测量进行测量时，可以组合无偏差的测量值以提供对刀具取向的改进的确定。

2. 发明专利

NO20035135L 未知
公开(公告)号：NO20035135L
公开(公告)日：2000-08-03
申请号：NO20035135
申请日：2003-11-18
申请人： BAKER HUGHES INC
发明人： ESTES ROBERT ALAN , NOY KOEN ANTONIE , KAHN JOHN B
IPC分类号： E21B47/022 , G01C19/38 , G01V1/48 , G01V3/18 , E21B
摘要： This invention provides a measurement-while-drilling (MWD) downhole assembly for use in drilling boreholes which utilizes gyroscopes, magnetometers and accelerometers for determining the borehole inclination and azimuth during the drilling of the borehole. The downhole assembly includes at least one gyroscope that is rotatably mounted in a tool housing to provide signals relating to the earth's rotation. A device in the tool can rotate the gyroscope and other sensors on the tool at any desired degree. A processor in the tool combines measurements from the sensors taken at a plurality of positions at the same depth to determine the systematic bias in the sensors before further processing. Accelerometers in the MWD tool provide gravity measurements from which the toolface and inclination are determined. The unbiased gyroscopic measurements are used in conjunction with the tool face and inclination measurements to determine the azimuth and tool face with respect to true north. Three axially spaced apart magnetometers may be used to correct for local magnetic disturbances. Additionally, when measurements are made with magnetic, accelerometer and gyroscopic measurements along three different axes, the unbiased measurements may be combined to provide an improved determination of the tool orientation.

3. 发明专利

NO20002859D0 未知
公开(公告)号：NO20002859D0
公开(公告)日：2000-06-05
申请号：NO20002859
申请日：2000-06-05
申请人： BAKER HUGHES INC
发明人： ESTES ROBERT A , NOY KOEN ANTONIE , KAHN JON B
IPC分类号： E21B47/022 , G01C19/38 , G01V1/48 , G01V3/18 , E21B
摘要： This invention provides a measurement-while-drilling (MWD) downhole assembly for use in drilling boreholes which utilizes gyroscopes, magnetometers and accelerometers for determining the borehole inclination and azimuth during the drilling of the borehole. The downhole assembly includes at least one gyroscope that is rotatably mounted in a tool housing to provide signals relating to the earth's rotation. A device in the tool can rotate the gyroscope and other sensors on the tool at any desired degree. A processor in the tool combines measurements from the sensors taken at a plurality of positions at the same depth to determine the systematic bias in the sensors before further processing. Accelerometers in the MWD tool provide gravity measurements from which the toolface and inclination are determined. The unbiased gyroscopic measurements are used in conjunction with the tool face and inclination measurements to determine the azimuth and tool face with respect to true north. Three axially spaced apart magnetometers may be used to correct for local magnetic disturbances. Additionally, when measurements are made with magnetic, accelerometer and gyroscopic measurements along three different axes, the unbiased measurements may be combined to provide an improved determination of the tool orientation.

4. 发明专利

CA2312742C MEASUREMENT-WHILE-DRILLING ASSEMBLY USING GYROSCOPIC DEVICESAND METHODS OF BIAS REMOVAL 未知
公开(公告)号：CA2312742C
公开(公告)日：2007-04-24
申请号：CA2312742
申请日：1998-12-04
申请人： BAKER HUGHES INC
发明人： KAHN JON B , ESTES ROBERT A , NOY KOEN ANTONIE
IPC分类号： E21B47/022 , G01C19/38 , G01V1/48 , G01V3/18
摘要： This invention provides a measurement-while-drilling (MWD) downhole assembly for use in drilling boreholes which utilizes gyroscopes, magnetometers and accelerometers for determining the borehole inclination and azimuth during the drilling of the borehole. The downhole assembly includes at least one gyroscope that is rotatably mounted in a tool housing to provide signals relating to the earth's rotation. A device in the tool can rotate the gyroscope and other sensors on the tool at any desired degree. A processor in the tool combines measurements from the sensors taken at a plurality of positions at the same depth to determine the systematic bias in the sensors before further processing. Accelerometers in the MWD tool provide gravity measurements from which the toolface and inclination are determined. The unbiased gyroscopic measurements are used in conjunction wit h the tool face and inclination measurements to determine the azimuth and tool face with respect to true north. Three axially spaced apart magnetometers may be used to correct for local magnetic disturbances. Additionally, when measurements are made with magnetic, accelerometer and gyrospic measurements along three different axes, the unbiased measurements may be combined to provide an improved determination of the tool orientation.

5. 发明专利

AU759745B2 Apparatus for measuring magnetic declination using GPS 未知
公开(公告)号：AU759745B2
公开(公告)日：2003-05-01
申请号：AU3990099
申请日：1999-05-13
申请人： BAKER HUGHES INC
发明人： NOY KOEN ANTONIE , ESTES ROBERT ALAN , MORSY HATEM SALEM
IPC分类号： E21B47/022 , G01C17/30 , G01C21/18 , G01S19/14 , G01S19/53 , G01C17/00 , G01C17/38 , G01S5/14
摘要： A processor uses signals from at least two GPS receivers and a 3-component accelerometer located on a stable non-magnetic platform to determine the roll, yaw and pitch angles of the platform, thus providing a measurement of geographic north. The processor also uses signals from a 3-component magnetometer on the platform to determine the magnetic north and thence the magnetic declination. A proton magnetometer is used to provide a check on the measurements of the 3-component magnetometer. Additionally, three single component magnetometers provide a measure of the local magnetic field gradient and serve to monitor artificially induced magnetic fields. An alternate embodiment of the invention uses at least three GPS receivers and may dispense with the 3-component of accelerometer to determine geographic north. Temporal local variations of the earth's magnetic field are tracked and used to correct conventional magnetic well surveys. For use in offshore drilling applications where the rig is on a drillship, the platform floats on water away from the drillship and tethered to a buoy. Signals from an inertial motion sensor are used by the processor to correct the observations of the GPS sensors, the magnetometers and the accelerometers for the motion of the platform in water.

6. 发明专利

GB2369188B Measurement-while-drilling assembly using gyroscopic devices and methods of bias removal 未知
公开(公告)号：GB2369188B
公开(公告)日：2002-07-17
申请号：GB0203908
申请日：1998-12-04
申请人： BAKER HUGHES INC
发明人： ESTES ROBERT ALAN , NOY KOEN ANTONIE , KAHN JON B
IPC分类号： E21B47/022 , G01C19/38

7. 发明专利

AU749937B2 Measurement-while-drilling assembly using gyroscopic devices and methods of bias removal 未知
公开(公告)号：AU749937B2
公开(公告)日：2002-07-04
申请号：AU1628399
申请日：1998-12-04
申请人： BAKER HUGHES INC
发明人： ESTES ROBERT A , NOY KOEN ANTONIE , KAHN JON B
IPC分类号： E21B47/022 , G01C19/38 , G01V1/48 , G01V3/18
摘要： This invention provides a measurement-while-drilling (MWD) downhole assembly for use in drilling boreholes which utilizes gyroscopes, magnetometers and accelerometers for determining the borehole inclination and azimuth during the drilling of the borehole. The downhole assembly includes at least one gyroscope that is rotatably mounted in a tool housing to provide signals relating to the earth's rotation. A device in the tool can rotate the gyroscope and other sensors on the tool at any desired degree. A processor in the tool combines measurements from the sensors taken at a plurality of positions at the same depth to determine the systematic bias in the sensors before further processing. Accelerometers in the MWD tool provide gravity measurements from which the toolface and inclination are determined. The unbiased gyroscopic measurements are used in conjunction with the tool face and inclination measurements to determine the azimuth and tool face with respect to true north. Three axially spaced apart magnetometers may be used to correct for local magnetic disturbances. Additionally, when measurements are made with magnetic, accelerometer and gyroscopic measurements along three different axes, the unbiased measurements may be combined to provide an improved determination of the tool orientation.

8. 发明专利

GB2353651A8 Apparatus for measuring magnetic declination using gps 未知
公开(公告)号：GB2353651A8
公开(公告)日：2002-02-25
申请号：GB0027800
申请日：1999-05-13
申请人： BAKER HUGHES INC
发明人： NOY KOEN ANTONIE , ESTES ROBERT ALAN , MORSY HATEM SALEM
IPC分类号： E21B47/022 , G01C17/30 , G01C21/18 , G01S19/14 , G01S19/53 , G01S5/14 , G01C17/00 , G01C17/38
摘要： A processor uses signals from at least two GPS receivers and a 3-component accelerometer located on a stable non-magnetic platform to determine the roll, yaw and pitch angles of the platform, thus providing a measurement of geographic north. The processor also uses signals from a 3-component magnetometer on the platform to determine the magnetic north and thence the magnetic declination. A proton magnetometer is used to provide a check on the measurements of the 3-component magnetometer. Additionally, three single component magnetometers provide a measure of the local magnetic field gradient and serve to monitor artificially induced magnetic fields. An alternate embodiment of the invention uses at least three GPS receivers and may dispense with the 3-component of accelerometer to determine geographic north. Temporal local variations of the earth's magnetic field are tracked and used to correct conventional magnetic well surveys. For use in offshore drilling applications where the rig is on a drillship, the platform floats on water away from the drillship and tethered to a buoy. Signals from an inertial motion sensor are used by the processor to correct the observations of the GPS sensors, the magnetometers and the accelerometers for the motion of the platform in water.

9. 发明专利

GB2353651A Apparatus for measuring magnetic declination using gps 未知
公开(公告)号：GB2353651A
公开(公告)日：2001-02-28
申请号：GB0027800
申请日：1999-05-13
申请人： BAKER HUGHES INC
发明人： NOY KOEN ANTONIE , ESTES ROBERT ALAN
IPC分类号： E21B47/022 , G01C17/30 , G01C21/18 , G01S19/14 , G01S19/53 , G01S5/14 , G01C17/00 , G01C17/38
摘要： A processor uses signals from at least two GPS receivers and a 3-component accelerometer located on a stable non-magnetic platform to determine the roll, yaw and pitch angles of the platform, thus providing a measurement of geographic north. The processor also uses signals from a 3-component magnetometer on the platform to determine the magnetic north and thence the magnetic declination. A proton magnetometer is used to provide a check on the measurements of the 3-component magnetometer. Additionally, three single component magnetometers provide a measure of the local magnetic field gradient and serve to monitor artificially induced magnetic fields. An alternate embodiment of the invention uses at least three GPS receivers and may dispense with the 3-component of accelerometer to determine geographic north. Temporal local variations of the earth's magnetic field are tracked and used to correct conventional magnetic well surveys. For use in offshore drilling applications where the rig is on a drillship, the platform floats on water away from the drillship and tethered to a buoy. Signals from an inertial motion sensor are used by the processor to correct the observations of the GPS sensors, the magnetometers and the accelerometers for the motion of the platform in water.

10. 发明专利

NO20005737L 未知
公开(公告)号：NO20005737L
公开(公告)日：2001-01-09
申请号：NO20005737
申请日：2000-11-13
申请人： BAKER HUGHES INC
发明人： NOY KOEN ANTONIE , ESTES ROBERT ALAN
IPC分类号： E21B47/022 , G01C17/30 , G01C21/18 , G01S19/14 , G01S19/53 , G01C17/38 , G01S5/14
摘要： A processor uses signals from at least two GPS receivers and a 3-component accelerometer located on a stable non-magnetic platform to determine the roll, yaw and pitch angles of the platform, thus providing a measurement of geographic north. The processor also uses signals from a 3-component magnetometer on the platform to determine the magnetic north and thence the magnetic declination. A proton magnetometer is used to provide a check on the measurements of the 3-component magnetometer. Additionally, three single component magnetometers provide a measure of the local magnetic field gradient and serve to monitor artificially induced magnetic fields. An alternate embodiment of the invention uses at least three GPS receivers and may dispense with the 3-component of accelerometer to determine geographic north. Temporal local variations of the earth's magnetic field are tracked and used to correct conventional magnetic well surveys. For use in offshore drilling applications where the rig is on a drillship, the platform floats on water away from the drillship and tethered to a buoy. Signals from an inertial motion sensor are used by the processor to correct the observations of the GPS sensors, the magnetometers and the accelerometers for the motion of the platform in water.

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