US2827121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic fracturing and selective plugging of subterranean formations
Assignee: Union Oil Company of California
•
Filing: 1954-08-09
•
Granted: 1958-03-18
•
Expires: 1974-08-09
Abstract
No abstract record available.
Inventors
- 👤 Theodore J Nowak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:57
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/50; C09K8/504; C09K8/506; C09K8/508; C09K8/5086; Y; Y10; Y10S; Y10S507/00; Y10S507/922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
THE METHOD OF INCREASING THE PRODUCTIVITY OF AN OIL-BEARING FORMATION PENETRATED BY A WELL BORE WHICH COMPRISES INTRODUCING INTO SAID BORE A VISCOUS FRACTURING FLUID WHICH IS CAPABLE OF UNDERGOING REACTION AT THE TEMPERATURE OF SAID FORMATION TO FORM AN OIL-SOLUBLE WATER-INSOLUBLE AND WATER-IMPERMEABLE SOLID MASS OF SUBSTANTIALLY THE SAME VOLUME AS SAID FLUID, APPLYING SUFFICIENT PRESSURE ON SAID FLUID TO FORCE IT INTO SAID FORMATION AND PRODUCE A FRACTURE THEREIN, FORMING SAID OILSOLUBLE WATER-INSOLUBLE WATER-IMPERMEABLE SOLD MASS WITHIN SAID FRACTURE BY MAINTAINING SAID FLUID WITHIN SAID FRACTURE FOR A PERIOD OF TIME SUFFICIENT FOR SAID REACTION TO OCCUR, AND THEREAFTER PLACING THE WELL ON PRODUCTION.
Claim 2
Independent Claim
106 words
THE METHOD OF INCREASING THE PRODUCTIVITY OF AN OIL-BEARING FORMATION PENETRATED BY A WELL BORE WHICH COMPRISES INTRODUCING INTO SAID BORE A VISCOUS FRACTURING FLUID WHICH IS CAPABLE OF UNDERGOING REACTION AT THE TEMPERATURE OF SAID FORMATION TO FORM AN OIL-SOLUBLE WATER-INSOLUBLE AND WATER-IMPERMEABLE SOLID MASS OF SUBSTANTIALLY THE SAME VOLUME AS SAID FLUID, APPLYING SUFFICIENT PRESSURE ON SAID FLUID TO FORCE IT INTO SAID FORMATION AND PRODUCE A FRACTURE THEREIN, FORMING SAID OILSOLUBLE WATER-INSOLUBLE WATER-IMPERMEABLE SOLD MASS WITHIN SAID FRACTURE BY MAINTAINING SAID FLUID WITHIN SAID FRACTURE FOR A PERIOD OF TIME SUFFICIENT FOR SAID REACTION TO OCCUR, AND THEREAFTER PLACING THE WELL ON PRODUCTION.
References Cited (Backward Citations)
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-17 | 1961-09-16 | 1962-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-17 | 1965-09-16 | 1966-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-17 | 1969-09-16 | 1970-03-18 | $7700.00 | Window Closed / Lapsed |