US3582873A
Expired / Lapsed
US
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Dynamic amplitude recovery
Assignee: Individual
•
Filing: 1968-10-15
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Granted: 1971-06-01
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Expires: 1988-10-15
Abstract
Abstract Processes for improving seismic signals whereby attenuated frequencies are restored. The restoration of a seismic trace is accomplished by adding proper quantities of even numbered derivatives back into the trace with larger proportions added at greater times to counteract the effect of larger attenuations.
Inventors
- 👤 Charles Floyd George Jr
- 👤 Howard A Slack
- 👤 Ronald K Scudder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:50
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/28; G01V2210/00; G01V2210/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
92 words
An automatic machine-implemented process for improving a seismic trace whereby attenuated frequencies are restored comprising a. taking a series of consecutive even numbered derivatives of the seismic trace starting with the second derivative, b. adjusting the gain of the seismic trace and each of said even numbered derivatives with respect to time to predetermined levels, and c. combining the seismic trace and only said even numbered derivatives following the gain adjustment to obtain a trace characterized by amplitude recovery, wherein each of steps (a), (b), and (c) is performed without human intervention.
Claim 2
Dependent Claim
92 words
An automatic machine-implemented process for improving a seismic trace whereby attenuated frequencies are restored comprising a. taking a series of consecutive even numbered derivatives of the seismic trace starting with the second derivative, b. adjusting the gain of the seismic trace and each of said even numbered derivatives with respect to time to predetermined levels, and c. combining the seismic trace and only said even numbered derivatives following the gain adjustment to obtain a trace characterized by amplitude recovery, wherein each of steps (a), (b), and (c) is performed without human intervention.
Claim 3
Dependent Claim
17 words
A process according to claim 1 where the second and fourth derivatives are determined in step (a).
Claim 4
Dependent Claim
18 words
A process according to claim 1 where the second, fourth, and sixth derivatives are determined in step (a).
Claim 5
Dependent Claim
93 words
An automatic machine-implemented process for compensating a seismic trace for frequency dependent attenuation comprising a. taking a progression of even numbered derivatives of the seismic trace including the second derivative, b. weighting the seismic trace and each even numbered derivative thus obtained differently with respect to time by multiplying them with separate predetermined gain functions, and c. summing the gain compensated seismic trace and said even numbered derivatives, while excluding all odd numbered derivatives, to produce an amplitude corrected trace, wherein each of steps (a), (b), and (c) is performed without human intervention.
Claim 6
Dependent Claim
93 words
An automatic machine-implemented process for compensating a seismic trace for frequency dependent attenuation comprising a. taking a progression of even numbered derivatives of the seismic trace including the second derivative, b. weighting the seismic trace and each even numbered derivative thus obtained differently with respect to time by multiplying them with separate predetermined gain functions, and c. summing the gain compensated seismic trace and said even numbered derivatives, while excluding all odd numbered derivatives, to produce an amplitude corrected trace, wherein each of steps (a), (b), and (c) is performed without human intervention.
Claim 7
Dependent Claim
17 words
A process according to claim 4 where the second and fourth derivatives are determined in step (a).
Claim 8
Dependent Claim
18 words
A process according to claim 4 where the second, fourth, and sixth derivatives are determined in step (a).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |