US2725282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well logging apparatus
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1952-04-30
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Granted: 1955-11-29
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Expires: 1972-04-30
Abstract
No abstract record available.
Inventors
- 👤 Stuart E Buckley
- 👤 Whitman D Mounce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:51
CPC Classifications
E; E21; E21B; E21B49/00; E21B49/08; G; G01; G01V; G01V1/00; G01V1/40; G01V1/44; G01V1/46; G01V9/00; G01V9/005
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
128 words
WELL LOGGING APPARATUS FOR DETECTING THE PRESENCE OF PETROLIFEROUS SUBSTANCES IN AN EARTH FORMATION PENETRATED BY A WELL BORE WHICH COMPRISES, IN COMBINATION, A BODY MEMBER ADAPTED TO BE LOWERED AND RAISED IN SAID WELL BORE; A CHAMBER IN SAID BODY MEMBER ADAPTED TO CONTAIN A FLUID OXIDIZING AGENT; EXTENSIVE MEANS CARRIED BY SAID BODY MEMBER DEFINING WITH A FREE END THEREOF A KNIFE EDGE FOR DISRUPTING A FILTER CAKE ON A WALL OF SAID WELL BORE AND FOR CONTACTING SAID FORMATION; MEANS CARRIED BY SAID EXTENSIBLE MEANS FOR INTRODUCING SAID OXIDIZING AGENT INTO CONTACT WITH SAID FORMATION COMPRISING A CONDUIT COMMUNICATING WITH SAID CHAMBER; AND DETECTION MEANS CARRIED BY SAID BODY MEMBER FOR DETECTING A REACTION EFFECT OF SAID OXIDIZING AGENT WITH PETROLIFEROUS SUBSTANCES IN SAID FORMATION.
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) | 1958-11-28 | 1959-05-30 | 1959-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-28 | 1963-05-30 | 1963-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-28 | 1967-05-30 | 1967-11-29 | $7700.00 | Window Closed / Lapsed |