US3275979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamically obtaining normal moveout correction
Assignee: Mobil Oil AS
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Filing: 1963-04-29
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Granted: 1966-09-27
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Expires: 1983-04-29
Abstract
No abstract record available.
Inventors
- 👤 Silvan E Mcalpin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:34
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/28; G01V1/36; G01V1/362; G01V2210/00; G01V2210/50; G01V2210/52
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
131 words
A NORMAL MOVEOUT CORRECTION SYSTEM OF THE TYPE WHICH APPLIES STATIC AND DYNAMIC MOVEMENT CORRECTION TO SEISMIC SIGNALS RECEIVED AT A DETECTOR SPACED FROM A SHOT POINT COMPRISING FIRST MEANS FOR PRODUCING A SIGNAL PROPORTIONAL TO THE TIME BETWEEN REAL TIME AND SHOT TIME, SECOND MEANS FOR PRODUCING A HORIZONTAL TIME SIGNAL PROPORTIONAL TO THE DISTANCE BETWEEN THE SHOT POINT AND A PARTICULAR DETECTOR DIVIDED BY THE AVERAGE VELOCITY OF THE SEISMIC WAVE FROM THE SHOT POINT TO THE REFLECTING BEDS, A PHASE SHIFTER CONNECTED TO SAID FIRST MEANS AND TO SAID SECOND MEANS FOR PHASE SHIFTING BY 90* SAID REAL TIME SIGNAL AND SAID HORIZONTAL TIME SIGNAL ONE FROM THE OTHER AND FOR COMBINING SAID PHASE SHIFTED SIGNALS TO PRODUCE A SLANT TIME SIGNAL PROPORTIONAL TO THE SLANT TRAVEL TIME
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |