US2792894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of increasing oil production
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1953-09-03
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Granted: 1957-05-21
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Expires: 1973-09-03
Abstract
No abstract record available.
Inventors
- 👤 John W Graham
- 👤 William M Mccardell
- 👤 Joseph S Osoba
- 👤 Joseph G Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:27
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/584; Y; Y10; Y10S; Y10S507/00; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A METHOD FOR RECOVERING PETROLEUM FROM A SUBSURFACE PETROLEUM SOURCE ROCK FORMATION IN WHICH THE PETROLEUM SOURCE ROCK COMPRISES POROUS ROCK SOLIDS SECTIONS ADJACENT CHANNELS OF HIGHER PERMEABILITY THAN THE POROUS ROCK SOLIDS SECTIONS WHICH COMPRISES FIRST IMBIBING WATER INTO SAID SECTIONS FOR A TIME IN THE RANGE FROM APPROXIMATELY ONE WEEK TO APPROXIMATELY THREE YEARS UNTIL SUBSTANTIAL SATURATION AND WETTING OF THE SOLIDS ARE OBTAINED IN THE SOLIDS ADJACENT THE CHANNELS AND THE IMBIBITION FACES OF THE SOLIDS AND THEN IMBIBING ADDITIONAL
Claim 2
Independent Claim
83 words
A METHOD FOR RECOVERING PETROLEUM FROM A SUBSURFACE PETROLEUM SOURCE ROCK FORMATION IN WHICH THE PETROLEUM SOURCE ROCK COMPRISES POROUS ROCK SOLIDS SECTIONS ADJACENT CHANNELS OF HIGHER PERMEABILITY THAN THE POROUS ROCK SOLIDS SECTIONS WHICH COMPRISES FIRST IMBIBING WATER INTO SAID SECTIONS FOR A TIME IN THE RANGE FROM APPROXIMATELY ONE WEEK TO APPROXIMATELY THREE YEARS UNTIL SUBSTANTIAL SATURATION AND WETTING OF THE SOLIDS ARE OBTAINED IN THE SOLIDS ADJACENT THE CHANNELS AND THE IMBIBITION FACES OF THE SOLIDS AND THEN IMBIBING ADDITIONAL
References Cited (Backward Citations)
US2233381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-20 | 1960-11-19 | 1961-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-20 | 1964-11-19 | 1965-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-20 | 1968-11-19 | 1969-05-21 | $7700.00 | Window Closed / Lapsed |