US2842220A
Expired / Lapsed
US
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Method of surveying a borehole
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1957-01-07
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Granted: 1958-07-08
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Expires: 1977-01-07
Abstract
No abstract record available.
Inventors
- 👤 Edward L Clifford
- 👤 Vernon L Redding
- 👤 James R Ording
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:18
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/40; G01V1/42; G01V2210/00; G01V2210/10; G01V2210/16; G01V2210/161
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
131 words
IN A SYSTEM FOR SEISMIC PROSPECTING, THE METHOD INCLUDING THE FOLLOWING STEPS: LOWERING A STRING OF GEOPHONES INTO A BOREHOLE, THE SPACING BETWEEN SUCCESSIVE GEOPHONES BEING APPROXIMATELY THE SAME; DETONATING AN ARTIFICAL SOURCE OF ELASTIC WAVES AT THE EARTH''S SURFACE IN THE VICINITY OF THE BOREHOLE; RECORDING THE WAVES RECEIVED BY SAID GEOPHONES, AS A RESULT OF SAID DETONATION, IN THE FORM OF A VARIABLE DENSITY PRESENTATION WHEREIN THE DENSITY OF THE RECORDING VARIES IN ACCORDANCE WITH THE STRENGTH OF THE RECEIVED SIGNAL, THE RECORDING FOR EACH GEOPHONE BEING PARALLEL TO EACH OTHER AND SPACED APART BY A DISTANCE NOT GREATER THAN THE WIDTH OF THE INDIVIDUAL RECORDINGS; AND ADJUSTING THE SLOPE OF THE SUCCESSIVE RECORDINGS OF THE FIRST RECEIVED IMPULSES RECEIVED FROM SAID SOURCE BY SUCCESSIVE GEOPHONES GOING DOWN THE
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) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |