Patent US4467460A successfully refreshed from Google Patents.
US4467460A
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Seismic data acquisition method
Assignee: BP Corp North America Inc
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Filing: 1981-02-26
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Granted: 1984-08-21
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Expires: 2001-02-26
Abstract
Abstract The field locations of seismic shot points are chosen to produce partial multifold data, the static correction equations of which are at least partially coupled. The seismic cross sections resulting therefrom are substantially improved.
Inventors
- 👤 Philip W. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:46
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/003; G01V1/28; G01V1/36; G01V1/362; G01V2210/00; G01V2210/50; G01V2210/53
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
137 words
A method for the taking of seismic data, wherein the full-fold common depth point technique is altered to reduce the required number of records without substantial detrimental effects to the interpretability of the resulting seismic sections, comprising: omitting the use of one or more of the normal full-fold seismic source points; and arranging the remaining source points with respect to the detectors so that the resulting system of linear static correction equations remains continuously and at least minimally partially coupled according to common depth point, each seismic source and detector being at preselected locations during the time of source initiation and the taking of seismic data, thereby assuring seismic data with respect to common depth points; whereby no subset of equations according to common depth point exists which is mathematically independent from the remaining set of equations.
Claim 2
Independent Claim
137 words
A method for the taking of seismic data, wherein the full-fold common depth point technique is altered to reduce the required number of records without substantial detrimental effects to the interpretability of the resulting seismic sections, comprising: omitting the use of one or more of the normal full-fold seismic source points; and arranging the remaining source points with respect to the detectors so that the resulting system of linear static correction equations remains continuously and at least minimally partially coupled according to common depth point, each seismic source and detector being at preselected locations during the time of source initiation and the taking of seismic data, thereby assuring seismic data with respect to common depth points; whereby no subset of equations according to common depth point exists which is mathematically independent from the remaining set of equations.
Claim 3
Dependent Claim
32 words
A method according to claim 1 wherein the remaining source points are arranged so that the resulting system of linear static correction equations remains continuously, directly, and at least minimally partially coupled.
Claim 4
Dependent Claim
26 words
A method according to claim 1 wherein the remaining source points are arranged so that sequentially alternating adjacent pairs of source locations are used and omitted.
Claim 5
Dependent Claim
32 words
A method according to claim 1 wherein the remaining source points are arranged so that the resulting system of linear static correction equations remains continuously, indirectly, and at least minimally partially coupled.
Claim 6
Dependent Claim
34 words
A method according to claim 1 wherein the remaining source points are arranged so that at least one adjacent source pair occurs in at least one spread of an areal configuration for seismic exploration.
Claim 7
Dependent Claim
32 words
A method according to claim 1 wherein the remaining source points are arranged so that at least one adjacent source pair occurs in each spread of an areal configuration for seismic exploration.
Claim 8
Dependent Claim
32 words
A method according to claim 1 wherein the remaining source points are arranged so that at least two adjacent source pairs occur in each spread of an areal configuration for seismic exploration.
Claim 9
Dependent Claim
17 words
A method according to claim 5 wherein approximately one-half of the full-fold seismic source points are omitted.
Claim 10
Dependent Claim
17 words
A method according to claim 6 wherein approximately one-half of the full-fold seismic source points are omitted.
Claim 11
Dependent Claim
17 words
A method according to claim 7 wherein approximately one-half of the full-fold seismic source points are omitted.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-21 | 1988-02-20 | 1988-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-21 | 1992-02-20 | 1992-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-21 | 1996-02-20 | 1996-08-21 | $7700.00 | Window Closed / Lapsed |