IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0468477
(2009-05-19)
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등록번호 |
US-9052411
(2015-06-09)
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발명자
/ 주소 |
- Hauan, Johan
- Hagelund, Rune
- Solheim, Stig
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
0 인용 특허 :
89 |
초록
▼
A group of techniques can be used to determine if components of a seismic spread have deviated from a planned path during a coil or other curved and substantially circular acquisition pattern. In one aspect, and in general, the presently disclosed techniques include a computer-readable program stora
A group of techniques can be used to determine if components of a seismic spread have deviated from a planned path during a coil or other curved and substantially circular acquisition pattern. In one aspect, and in general, the presently disclosed techniques include a computer-readable program storage medium for determining the deviation of spread array element from a planned curved path during a towed-array marine seismic survey. The method comprises: determining a nominal position of the spread array element at a given point in the planned curved path; determining the actual position of the spread array element; and performing an error analysis predicated on the nominal and actual positions.
대표청구항
▼
1. A computer-implemented method for determining the deviation of spread array element from a planned curved path during a towed-array marine seismic survey, the comprising: determining a nominal position of the spread array element at a given point in the planned curved path, wherein the planned cu
1. A computer-implemented method for determining the deviation of spread array element from a planned curved path during a towed-array marine seismic survey, the comprising: determining a nominal position of the spread array element at a given point in the planned curved path, wherein the planned curved path has a radius that is a function of a width of a marine spread on which the spread array element is disposed;determining the actual position of the spread array element; andperforming an error analysis predicated on the nominal and actual positions. 2. A computer-implemented method for determining the deviation of spread array element from a planned curved path during a towed-array marine seismic survey, the comprising: determining a nominal position of the spread array element at a given point in the planned curved path, wherein determining the nominal position of the spread array element comprises determining the nominal position from an equipment nominal offset and a shot number;determining the actual position of the spread array element; andperforming an error analysis predicated on the nominal and actual positions. 3. The computer-implemented method of claim 1, wherein determining the nominal position of the spread array element in the method includes determining distance along and distance across. 4. The computer-implemented method of claim 1, wherein determining the actual position of the spread array element in the method includes acoustic ranging or GPS positioning. 5. The computer-implemented method of claim 1, wherein performing the error analysis in the method includes performing an error analysis during the survey to correct position errors for survey elements. 6. The computer-implemented method of claim 1, wherein performing the error analysis in the method includes performing an error analysis after the survey for quality control purposes. 7. The computer-implemented method of claim 1, wherein performing the error analysis in the method includes any one of, or any combination of: determining the difference between the desired position and the actual position of steered survey elements to issue a steering command;determining the difference between the desired position and the actual position of steered survey elements to produce a plot of the deviation from the desired position;computing statistics establishing whether one or more survey specifications are being met; andproducing a plot for display to the user. 8. A computer-readable program storage medium encoded with instructions that, when executed by a computing device, perform a method for determining the deviation of spread array element from a planned curved path during a towed-array marine seismic survey, comprising: determining a nominal position of the spread array element at a given point in the planned curved path, wherein the planned curved path has a radius that is a function of a width of a marine spread on which the spread array element is disposed;determining the actual position of the spread array element; andperforming an error analysis predicated on the nominal and actual positions. 9. The computer-readable program storage medium of claim 8, wherein determining the nominal position of the spread array element includes determining the nominal position from an equipment nominal offset and a shot number. 10. The computer-readable program storage medium of claim 8, wherein determining the nominal position of the spread array element includes determining distance along and distance across. 11. The computer-readable program storage medium of claim 8, wherein determining the actual position of the spread array element includes acoustic ranging or GPS positioning. 12. The computer-readable program storage medium of claim 8, wherein performing the error analysis includes performing an error analysis during the survey to correct position errors for survey elements. 13. The computer-readable program storage medium of claim 8, wherein performing the error analysis includes performing an error analysis after the survey for quality control purposes. 14. The computer-readable program storage medium of claim 8, wherein performing the error analysis includes any one of, or any combination of: determining the difference between the desired position and the actual position of steered survey elements to issue a steering command;determining the difference between the desired position and the actual position of steered survey elements to produce a plot of the deviation from the desired position in an across/along reference frame for display to the user in real time;computing statistics establishing whether one or more survey specifications are being met; andproducing a plot for display to the user. 15. A programmed computing apparatus, comprising: a processor;a storage accessible by the processor;a software component residing on the storage that, when executed by the processor, will perform a method for determining the deviation of spread array element from a planned curved path during a towed-array marine seismic survey, the method including:determining a nominal position of the spread array element at a given point in the planned curved path, wherein determining the nominal position of the spread array element includes determining the nominal position from an equipment nominal offset and a shot number;determining the actual position of the spread array element; andperforming an error analysis predicated on the nominal and actual positions. 16. The programmed computing apparatus of claim 15, wherein determining the nominal position of the spread array element includes determining distance along and distance across. 17. The programmed computing apparatus of claim 15, wherein determining the actual position of the spread array element includes acoustic ranging or GPS positioning. 18. The programmed computing apparatus of claim 15, wherein performing the error analysis includes performing an error analysis during the survey to correct position errors for survey elements. 19. The programmed computing apparatus of claim 15, wherein performing the error analysis includes performing an error analysis after the survey for quality control purposes. 20. The programmed computing apparatus of claim 15, wherein performing the error analysis includes any one of, or any combination of: determining the difference between the desired position and the actual position of steered survey elements to issue a steering command;determining the difference between the desired position and the actual position of steered survey elements to produce a plot of the deviation from the desired position in an across/along reference frame for display to the user in real time;computing statistics establishing whether one or more survey specifications are being met; andproducing a plot for display to the user. 21. A towed-array, marine seismic survey apparatus, comprising: means for traversing a seismic survey spread on a coil path; andmeans for positioning the elements of the seismic survey spread during the traversal, including: means for determining a nominal position of the spread array element at a given point in the planned coil path;means for determining the actual position of the spread array element;means for performing an error analysis predicated on the nominal and actual positions; andmeans for correcting an error in the position of the spread array element obtained from the error analysis.
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