US2825409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic fracturing of formations
Assignee: Shell Development Co
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Filing: 1954-09-13
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Granted: 1958-03-04
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Expires: 1974-09-13
Abstract
No abstract record available.
Inventors
- 👤 Kenneth A Ring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:37
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/62; C09K8/64; Y; Y10; Y10S; Y10S507/00; Y10S507/922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A METHOD OF INCREASING THE PRODUCTIVITY OF A FORMATION PENETRATED BY A WELL BY HYDRAULICALLY FRACTURING THE FORMATION, SAID METHOD COMPRISING INTRODUCING INTO SAID WELL A FRACTURING MEDIUM CONSISTING ESSENTIALLY OF A PREDOMINANT QUANTITY OF LOW-VISCOSITY HYDROCARBON LIQUID AND A GEL-FORMING SOAP OF TAIL OIL, SAID SOAP BEING IN SUFFICIENT AMOUNT WHEN MIXED WITH SAID LIQUID TO PRODUCE A FACTURING MEDIUM POSSESSNG A VISCOSITY OF AT LEAST ABOUT 120 CENTIPOISES, PUMPING SAID FRACTURING MEDIUM INTO A CONFINED ZONE IN SAID WELL ADJACENT SAID FORMATION, INCREASING THE PRESSURE ON SAID FRACTURING MEDIUM UNTIL A FORMATION FRACTURE IS INDICATED, MAINTAINING SAID FRACTURING MEDIUM IN SAID FRACTURED FORMATION UNTIL THE VISCOSITY OF SAID FRACTURING MEDIUM IS SUBSTANTIALLY REDUCED BY THE FORMATION TEMPERATURE, AND THEREAFTER PRODUCING SAID WELL.
Claim 2
Independent Claim
124 words
A METHOD OF INCREASING THE PRODUCTIVITY OF A FORMATION PENETRATED BY A WELL BY HYDRAULICALLY FRACTURING THE FORMATION, SAID METHOD COMPRISING INTRODUCING INTO SAID WELL A FRACTURING MEDIUM CONSISTING ESSENTIALLY OF A PREDOMINANT QUANTITY OF LOW-VISCOSITY HYDROCARBON LIQUID AND A GEL-FORMING SOAP OF TAIL OIL, SAID SOAP BEING IN SUFFICIENT AMOUNT WHEN MIXED WITH SAID LIQUID TO PRODUCE A FACTURING MEDIUM POSSESSNG A VISCOSITY OF AT LEAST ABOUT 120 CENTIPOISES, PUMPING SAID FRACTURING MEDIUM INTO A CONFINED ZONE IN SAID WELL ADJACENT SAID FORMATION, INCREASING THE PRESSURE ON SAID FRACTURING MEDIUM UNTIL A FORMATION FRACTURE IS INDICATED, MAINTAINING SAID FRACTURING MEDIUM IN SAID FRACTURED FORMATION UNTIL THE VISCOSITY OF SAID FRACTURING MEDIUM IS SUBSTANTIALLY REDUCED BY THE FORMATION TEMPERATURE, AND THEREAFTER PRODUCING SAID WELL.
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) | 1961-03-03 | 1961-09-02 | 1962-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-03 | 1965-09-02 | 1966-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-03 | 1969-09-02 | 1970-03-04 | $7700.00 | Window Closed / Lapsed |