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Patent US3705382A successfully refreshed from Google Patents.
US3705382A
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Methods for improved deconvolution of seismic or similar data
Assignee: PETTY GEOPHYSICAL ENG CO
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Filing: 1970-02-26
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Granted: 1972-12-05
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Expires: 1990-02-26
Abstract
Abstract Methods for preparing seismic data to be deconvolved comprise the introduction of a time variable correction based on velocity in the reverberating media and dip at the reverberating boundaries. This invention corrects for angularity in the reverberation path introduced by the detector being remote from the source and for the dips of the boundaries by making the undesired reverberations uniformly repetitive. Either normal movement (NMO) or composite corrections for NMO and dip are used depending on the extent of dip of the reflection boundaries, or the degree to which the refraction boundaries are not parallel, to make the reverberations repetitive in time. The modified data is then deconvolved to remove the repetitive noise and retains the desired signals which are non-repetitive. After deconvolution, a second time variable correction, representing the difference between the NMO correction required for the desired primary reflections and the first time variable correction, is applied. The data is then stacked using horizontal stacking techniques or further processed to provide any other desired form of presentation.
Inventors
- 👤 Roy G Quay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:09
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/28; G01V1/36; G01V1/364; G01V1/366; G01V2210/00; G01V2210/50; G01V2210/52
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
118 words
The method of processing within an automated data processing machine the seismic data that is obtained from the detection and recordation of seismic energy released from a seismic source to a plurality of detectors, wherein at least one of the detectors is remote from the energy source, comprising the steps of: a. introducing a first time variable shift in said seismic data from at least one of said detectors remote from said energy source by automated data processing means; b. deconvolving said time shifted data within an automated data processing means; and c. introducing a second time variable shift in said deconvolved data in the opposite direction from said first time variable shift by automated data processing means.
Claim 2
Independent Claim
118 words
The method of processing within an automated data processing machine the seismic data that is obtained from the detection and recordation of seismic energy released from a seismic source to a plurality of detectors, wherein at least one of the detectors is remote from the energy source, comprising the steps of: a. introducing a first time variable shift in said seismic data from at least one of said detectors remote from said energy source by automated data processing means; b. deconvolving said time shifted data within an automated data processing means; and c. introducing a second time variable shift in said deconvolved data in the opposite direction from said first time variable shift by automated data processing means.
Claim 3
Dependent Claim
43 words
The method of claim 1 wherein reverberations are present in said seismic data and said time shift in step (a) is equal to the normal moveoUt determined for the velocity of said reverberations in the media through which said seismic energy has passed.
Claim 4
Dependent Claim
29 words
The method of claim 1 wherein reverberations are present in said seismic data and said time shift in step (a) shifts the the reverberations so that they are periodic.
Claim 5
Dependent Claim
47 words
The method of claim 1 wherein step (b) further comprises cross-correlating within an automated data processor limited time portions of the data from a close detector with corresponding time portions of data from said remote detector and using the time delay obtained therefrom for the time shift.
Claim 6
Dependent Claim
33 words
The method of claim 1 wherein said second time variable shift in step (c) is equal to the difference between the normal moveout of desired primary reflections and said first time variable shift.
Claim 7
Dependent Claim
94 words
Apparatus for automatically processing seismic data that is obtained from the detection and recordation of seismic energy released from a seismic source to a plurality of detectors, wherein at least one of the detectors is remote from the energy source, comprising; apparatus for introducing a time variable shift in said seismic data from at least one of said detectors remote from said energy source, apparatus for deconvolving said time shifted data, and apparatus for introducing a second time variable shift in said deconvolved data in the opposite direction from said first time variable shift,.
Claim 8
Dependent Claim
94 words
Apparatus for automatically processing seismic data that is obtained from the detection and recordation of seismic energy released from a seismic source to a plurality of detectors, wherein at least one of the detectors is remote from the energy source, comprising; apparatus for introducing a time variable shift in said seismic data from at least one of said detectors remote from said energy source, apparatus for deconvolving said time shifted data, and apparatus for introducing a second time variable shift in said deconvolved data in the opposite direction from said first time variable shift,.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |