Patent US3179173A successfully refreshed from Google Patents.
US3179173A
Expired / Lapsed
US
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Water base fracturing liquid
Assignee: Pan American Petroleum Corp
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Filing: 1961-12-06
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Granted: 1965-04-20
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Expires: 1981-12-06
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank O Jones
- 👤 Clarence R Fast
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:54
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
IN A PROCESS FOR HYDRAULICALLY FRACTURING A SUBTERRANEAN FLUID-CONTAINING WATER SENSITIVE CLAY FORMATION PENETRATED BY A WELL WITH A FRESH WATER BASE FRACTURING LIQUID CONTAINING TOTAL DISSOLVED SALTS OF LESS THAN ABOUT 3,000 P.P.M., THE IMPROVEMENT WHICH COMPRISES ADJUSTING THE SALT CONCENTRATION OF SAID LIQUID SO THAT THE DISSOLVED DIVALENT CATION SALT CONTENT IS AT LEAST ABOUT 5 PERCENT OF THE TOTAL DISSOLVED SALTS, APPLYING TO THE RESULTING LIQUID SUFFICIENT PRESSURE TO FORCE IT INTO SAID FORMATION AND TO FRACTURE THE LATTER, AND THEREAFTER PRODUCING SAID WELL.
Claim 2
Dependent Claim
87 words
IN A PROCESS FOR HYDRAULICALLY FRACTURING A SUBTERRANEAN FLUID-CONTAINING WATER SENSITIVE CLAY FORMATION PENETRATED BY A WELL WITH A FRESH WATER BASE FRACTURING LIQUID CONTAINING TOTAL DISSOLVED SALTS OF LESS THAN ABOUT 3,000 P.P.M., THE IMPROVEMENT WHICH COMPRISES ADJUSTING THE SALT CONCENTRATION OF SAID LIQUID SO THAT THE DISSOLVED DIVALENT CATION SALT CONTENT IS AT LEAST ABOUT 5 PERCENT OF THE TOTAL DISSOLVED SALTS, APPLYING TO THE RESULTING LIQUID SUFFICIENT PRESSURE TO FORCE IT INTO SAID FORMATION AND TO FRACTURE THE LATTER, 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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |