US3208548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Earth logging system
Assignee: ExxonMobil Upstream Research Co
•
Filing: 1962-05-02
•
Granted: 1965-09-28
•
Expires: 1982-05-02
Abstract
No abstract record available.
Inventors
- 👤 Franklyn K Levin
- 👤 Sarmiento Roberto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:19
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/40; G01V1/44
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
79 words
A METHOD OF LOGGING A WELL PENETRATING A SUBSURFACE STRATA WHICH COMPRISES: GENERATING A FIRST ACOUSTICAL SIGNAL AT A FIRST POINT IN A WELL; MEASURING THE FIRST RATIO OF THE MAGNITUDE OF SAID FIRST SIGNAL AS DETECTED AT A SECOND POINT COMPARED TO THE MAGNITUDE OF THE SIGNAL AS DETECTED AT A THIRD POINT, SAID SECOND AND SAID THIRD POINTS BEING SPACED ONE FROM ANOTHER VERTICALLY AND IN THE SAME DIRECTION FROM SAID FIRST POINT; GENERATING A SECOND ACOUSTICAL
References Cited (Backward Citations)
US2813590A
Cited
US2708485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |