US3378073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fracturing a subterranean formation with a shear thickening liquid
Assignee: Mobil Oil AS
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Filing: 1966-05-10
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Granted: 1968-04-16
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Expires: 1986-05-10
Abstract
No abstract record available.
Inventors
- 👤 Joseph G Savins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:39
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/62; C09K8/66; C09K8/68; C09K8/685; Y; Y10; Y10S; Y10S507/00; Y10S507/903; Y10S507/922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
IN A METHOD OF FRACTURING A SUBTERRANEAN FORMATION ABOUT A WELL PENETRTATING THEREINTO THE PUMPING A FRACTURING LIQUID COMPOSITION THROUGH SAID WELL TO APPLY HYDRAULIC PRESSURE TO SAID FORMATION, THE IMPROVEMENT COMPRISING EMPLOYING A LIQUID COMPOSITION COMPRISING (A) WATER, (B) POLYVINYL ALCOHOL HAVING A MOLECULAR WEIGHT SUCH THAT A 4 PERCENT BY WEIGHT AQUEOUS SOLUTION HAS A VISCOSITY AT 20*C. OF FROM ABOUT 3 TO ABOUT 65 CENTIPOISES, AND (C) BORATE IONS, THE PARTICULAR AMOUNT OF POLYVINYL ALCOHOL AND THE PARTICULAR AMOUNT OF BORATE IONS BEING SELECTED SUCH THAT SAID LIQUID COMPOSITION POSSESSES SHEAR THIUCKENING PROPERTIES.
Claim 2
Dependent Claim
96 words
IN A METHOD OF FRACTURING A SUBTERRANEAN FORMATION ABOUT A WELL PENETRTATING THEREINTO THE PUMPING A FRACTURING LIQUID COMPOSITION THROUGH SAID WELL TO APPLY HYDRAULIC PRESSURE TO SAID FORMATION, THE IMPROVEMENT COMPRISING EMPLOYING A LIQUID COMPOSITION COMPRISING (A) WATER, (B) POLYVINYL ALCOHOL HAVING A MOLECULAR WEIGHT SUCH THAT A 4 PERCENT BY WEIGHT AQUEOUS SOLUTION HAS A VISCOSITY AT 20*C. OF FROM ABOUT 3 TO ABOUT 65 CENTIPOISES, AND (C) BORATE IONS, THE PARTICULAR AMOUNT OF POLYVINYL ALCOHOL AND THE PARTICULAR AMOUNT OF BORATE IONS BEING SELECTED SUCH THAT SAID LIQUID COMPOSITION POSSESSES SHEAR THIUCKENING PROPERTIES.
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) | 1971-04-16 | 1971-10-16 | 1972-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-16 | 1975-10-16 | 1976-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-16 | 1979-10-16 | 1980-04-16 | $7700.00 | Window Closed / Lapsed |