US2645291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically fracturing well formation
Assignee: Standard Oil Co
•
Filing: 1948-10-29
•
Granted: 1953-07-14
•
Expires: 1968-10-29
Abstract
No abstract record available.
Inventors
- 👤 Voorhees Vanderveer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:12
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/62; C09K8/64
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
119 words
THE METHOD OF DEVELOPING PASSAGES OF LIQUIDS THROUGH AN UNDERGROUND FORMATION ADJACENT DEEP WELL BORES WHICH COMPRISES INJECTING INTO SAID FORMATION UNDER HIGH PRESSURE OF BETWEEN ABOUT 1000 ANT 15,000 P.S.I., A SLURRY OF FINELY DIVIDED WATER-SOLUBLE AND WATER INSOLUBLE SOLIDS IN OIL THEREBY FRACTURING SAID FORMATION, SAID WATER-SOLUBLE SOLIDS HAVING A PARTICLE SIZE OF ABOUT 150 TO 400 MESH AND COMPRISING ABOUT 1 TO 10 POUNDS OF SOLIDS PER GALLON OF OIL, RETAINING SAID SLURRY IN SAID FORMATION UNTIL SAID WATER SOLUBLE SOLIDS ARE SUBSTANTIALLY DISSOLVED IN WATER PRESENT IN SAID FORMATION AND THEN WITHDRAWING THE SOLUTION OF WATER-SOLUBLE SOLIDS AND OIL FROM SAID FORMATION LEAVING THE WATER INSOLUBLE SOLIDS WITHIN THE FORMATION TO PROVIDE A PERMEABLE CHANNEL.
References Cited (Backward Citations)
USRE16535E
Cited
US1382337A
Cited
US1513371A
Cited
US2010800A
Cited
US2055666A
Cited
GB471637A
Cited
US2354570A
Cited
US2379516A
Cited
US2596845A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |