Patent US2745282A successfully refreshed from Google Patents.
US2745282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas logging of wells
Assignee: Monarch Logging Co Inc
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Filing: 1953-03-02
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Granted: 1956-05-15
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Expires: 1973-03-02
Abstract
No abstract record available.
Inventors
- 👤 Robert W Rochon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:08
CPC Classifications
E; E21; E21B; E21B49/00; E21B49/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
THE METHOD OF DETERMINING THE GAS-RELEASING PROPERTIES OF A HYDRAULIC DRILLING FLUID TO BE EMPLOYED IN THE ROTARY DRILLING OF WELLS, COMPRISING, INTRODUCING INTO AN INCREMENT OF KNOWN QUANTITY OF SAID FLUID A KNOWN VOLUME OF GAS, CIRCULATING SAID INCREMENT CONTAINING SAID KNOWN QUANTITY OF GAS THROUGH A SUBSTANTIALLY GAS-FREE WELL TO SUBJECT SAID INCREMENT TO THE DRILLING AND CIRCULATING CONDITIONS ENCOUNTERED IN THAT WELL, CAUSING GAS TO EVOLVE FROM SAID INCREMENT AS IT RETURNS TO THE SURFACE, AND MEAS-
Claim 2
Independent Claim
80 words
THE METHOD OF DETERMINING THE GAS-RELEASING PROPERTIES OF A HYDRAULIC DRILLING FLUID TO BE EMPLOYED IN THE ROTARY DRILLING OF WELLS, COMPRISING, INTRODUCING INTO AN INCREMENT OF KNOWN QUANTITY OF SAID FLUID A KNOWN VOLUME OF GAS, CIRCULATING SAID INCREMENT CONTAINING SAID KNOWN QUANTITY OF GAS THROUGH A SUBSTANTIALLY GAS-FREE WELL TO SUBJECT SAID INCREMENT TO THE DRILLING AND CIRCULATING CONDITIONS ENCOUNTERED IN THAT WELL, CAUSING GAS TO EVOLVE FROM SAID INCREMENT AS IT RETURNS TO THE SURFACE, AND MEAS-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |