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21. 发明专利

AU1866502A Measurement-while-drilling assembly using gyroscopic devices and methods of bias removal 未知
公开(公告)号：AU1866502A
公开(公告)日：2002-05-09
申请号：AU1866502
申请日：2002-02-22
申请人： BAKER HUGHES INC
发明人： ESTES ROBERT A , KAHN JON B , NOY KOEN ANTONIE
IPC分类号： E21B47/022 , G01C19/38

22. 发明专利

NO20005737D0 未知
公开(公告)号：NO20005737D0
公开(公告)日：2000-11-13
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 , G01C
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.

23. 发明专利

NO20002859L 未知
公开(公告)号：NO20002859L
公开(公告)日：2000-08-03
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
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.

24. 发明专利

CA2312742A1 MEASUREMENT-WHILE-DRILLING ASSEMBLY USING GYROSCOPIC DEVICES AND METHODS OF BIAS REMOVAL 未知
公开(公告)号：CA2312742A1
公开(公告)日：1999-06-10
申请号：CA2312742
申请日：1998-12-04
申请人： BAKER HUGHES INC
发明人： NOY KOEN ANTONIE , KAHN JON B , ESTES ROBERT A
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 gyrospic measurements along three different axes, the unbiased measurements may be combined to provide an improved determination of the tool orientation.

25. 发明专利

NO334584B1 Apparat til måling av misvisning ved bruk av GPS 未知
公开(公告)号：NO334584B1
公开(公告)日：2014-04-14
申请号：NO20005737
申请日：2000-11-13
申请人： BAKER HUGHES INC
发明人： ESTES ROBERT ALAN , NOY KOEN ANTONIE , MORSY HATEM SALEM
IPC分类号： G01C21/18 , E21B47/022 , G01C17/30 , G01S19/14 , G01S19/53
摘要： En prosessor anvender signaler fra minst to GPS-mottakere og et 3-komponents akselerometer som befinner seg på en stabil ikke-magnetisk plattform for å bestemme rulle-, slingre-, og stampe-vinkler for plattformen, slik at det kan frembringes en måling av geografisk nord. Denne prosessor anvender også signaler fra et 3-komponents magnetometer på plattformen for å bestemme magnetisk nord og således også den magnetiske misvisning. Et proton-magnetometer anvendes for å utføre en kontroll av 3-komponents magnetometerets målinger. I tillegg gir tre enkomponents magnetometere et mål på den lokale magnetfelt-gradient og tjener til å avdekke kunstig induserte magnetiske felt. En alternativ utførelse av oppfinnelsen anvender minst tre GPS-mottakere og kan utelate 3-komponents akselerometeret ved bestemmelse av geografisk nord-retning. Midlertidige lokale variasjoner av jordens magnetfelt oppspores og anvendes for å korrigere vanlige magnetiske brønninspeksjoner. For bruk med utboringsanvendelser til havs og hvor riggen befinner seg på et boreskip, flyter plattformen på vann vekk fra boreskipet og erfortøyet til en bøye. Signaler fra en bevegelsesføler av treghetstype anvendes av prosessoren for å korrigere observasjonene fra GPS-sensorene, magnetometerne og akselerometerne for plattformens bevegelse på vann.

26. 发明专利

NO327372B1 未知
公开(公告)号：NO327372B1
公开(公告)日：2009-06-15
申请号：NO20035134
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
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.

27. 发明专利

NO326611B1 未知
公开(公告)号：NO326611B1
公开(公告)日：2009-01-19
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
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.

28. 发明专利

CA2332264C APPARATUS FOR MEASURING MAGNETIC DECLINATION USING GPS 未知
公开(公告)号：CA2332264C
公开(公告)日：2004-01-06
申请号：CA2332264
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 , G01S5/14 , 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 rol l, 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 th e measurements of the 3-component magnetometer. Additionally, three single component magnetometers provide a measure of the local magnetic field gradie nt and serve to monitor artificially induced magnetic fields. An alternate embodiment of the invention uses at least three GPS receivers and may dispen se with the 3-component of accelerometer to determine geographic north. Tempora l local variations of the earth's magnetic field are tracked and used to corre ct conventional magnetic well surveys. For use in offshore drilling application s 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 .

29. 发明专利

NO20035134D0 未知
公开(公告)号：NO20035134D0
公开(公告)日：2003-11-18
申请号：NO20035134
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.

30. 发明专利

GB2347224A Measurement while drilling assembly using gyroscopic devices and methods of bias removal 未知
公开(公告)号：GB2347224A
公开(公告)日：2000-08-30
申请号：GB0013640
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 gyrospic measurements along three different axes, the unbiased measurements may be combined to provide an improved determination of the tool orientation.

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