US3243695A
Expired / Lapsed
US
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Method of formation logging and core orientation by measuring the piezoelectric potential produced in response to an elastic pulse introduced into a formation and core
Assignee: ExxonMobil Upstream Research Co
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Filing: 1962-12-21
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Granted: 1966-03-29
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Expires: 1982-12-21
Abstract
No abstract record available.
Inventors
- 👤 James J Roark
- 👤 Robert T Schweisberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:48
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/02; E21B47/026; G; G01; G01V; G01V3/00; G01V3/18; G01V3/26; G01V3/265
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
50 words
A METHOD OF LOGGING AN UNDERGROUND FORMATION TRAVERSED BY A WELL BORE WHICH COMPRISES: PRODUCING AN ELASTIC PULSE AT ONE LEVEL OF THE WALL OF THE WELL BORE; MEASURING THE PIEZO-ELECTRIC POTENTIAL PRODUCED RESPONSIVE TO SAID PULSE BETWEEN TWO POINTS ON THE WELL BORE WALL VERTICALLY SPACED FROM SAID LEVEL.
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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |