US2708155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for logging wells
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1952-04-30
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Granted: 1955-05-10
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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
2026-10-22 20:25
CPC Classifications
G; G01; G01V; G01V9/00; G01V9/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
A METHOD FOR DETECTING THE PRESENCE OF PETROLIFEROUS SUBSTANCE IN AN EARTH FORMATION PENETRATED BY A WELL BORE PRODUCED BY A DRILLING METHOD WHICH COMPOSITS A FILTER CAKE LINING ON SAID WELL BORE WHICH COMPRISES DISRUPTING FILTER CAKE FROM A PORTION OF THE FACE OF SAID FORMATION IN THE BOREHOLE, INTRODUCING A SOLUTION OF PERCHLORIC ACID HAVING A STRENGTH IN THE RANGE BETWEEN 70% AND 84% HCIO4 AND CERIC AMMONIUM NITRATE INTO SAID WELL BORE, CONTRACTING SAID SOLUTION WITH AT LEAST A PORTION OF THE FORMATION FROM WHICH THE FILTER CAKE HAS BEEN SO DISRUPTED AND THERE REACTING SAID SOLUTION WITH SAID SUBSTANCE AT A TEMPERATURE IN THE RANGE BETWEEN 40 C. AND 500* C. TO LIBERATE HEAT IN THAT PORTION OF THE FORMATION FROM WHICH THE FILTER CAKE HAS BEEN DISRUPTED, CONTRACTING SAID PORTION OF THE FORMULATION IN WHICH HEAT HAS BEEN LIBERATED BY SAID REACTION WITH A THERMO-ELECTRIC MEANS TO OBTAIN AN ELECTRIC SIGNAL FROM SAID REACTION, TRANSMITTING SAID ELECTRICAL SIGNAL TO THE SURFACE OF THE EARTH AND THERE DISPLAYING A FUNCTION OF SAID SIGNAL WHEREBY THE PRESENCE OF SAID SUBSTANCES IS INDICATED.
Claim 2
Independent Claim
185 words
A METHOD FOR DETECTING THE PRESENCE OF PETROLIFEROUS SUBSTANCE IN AN EARTH FORMATION PENETRATED BY A WELL BORE PRODUCED BY A DRILLING METHOD WHICH COMPOSITS A FILTER CAKE LINING ON SAID WELL BORE WHICH COMPRISES DISRUPTING FILTER CAKE FROM A PORTION OF THE FACE OF SAID FORMATION IN THE BOREHOLE, INTRODUCING A SOLUTION OF PERCHLORIC ACID HAVING A STRENGTH IN THE RANGE BETWEEN 70% AND 84% HCIO4 AND CERIC AMMONIUM NITRATE INTO SAID WELL BORE, CONTRACTING SAID SOLUTION WITH AT LEAST A PORTION OF THE FORMATION FROM WHICH THE FILTER CAKE HAS BEEN SO DISRUPTED AND THERE REACTING SAID SOLUTION WITH SAID SUBSTANCE AT A TEMPERATURE IN THE RANGE BETWEEN 40 C. AND 500* C. TO LIBERATE HEAT IN THAT PORTION OF THE FORMATION FROM WHICH THE FILTER CAKE HAS BEEN DISRUPTED, CONTRACTING SAID PORTION OF THE FORMULATION IN WHICH HEAT HAS BEEN LIBERATED BY SAID REACTION WITH A THERMO-ELECTRIC MEANS TO OBTAIN AN ELECTRIC SIGNAL FROM SAID REACTION, TRANSMITTING SAID ELECTRICAL SIGNAL TO THE SURFACE OF THE EARTH AND THERE DISPLAYING A FUNCTION OF SAID SIGNAL WHEREBY THE PRESENCE OF SAID SUBSTANCES IS INDICATED.
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) | 1958-05-09 | 1958-11-08 | 1959-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-09 | 1962-11-08 | 1963-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-09 | 1966-11-08 | 1967-05-10 | $7700.00 | Window Closed / Lapsed |