Patent US3240273A successfully refreshed from Google Patents.
US3240273A
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Method and apparatus for well stimulation
Assignee: Chevron USA Inc
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Filing: 1961-06-29
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Granted: 1966-03-15
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Expires: 1981-06-29
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Solari
- 👤 Darrell C Gallear
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:26
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A METHOD OF IMPROVING FLUID FLOW FROM A PETROLEUMBEARING INFORMATION PENETRATED BY A WELL COMPRISING ESTABLISHING A ZONE OF A CONSTNT PRESSURE IN SAID WELL SELECTIVELY COMMUNICABLE WITH SAID FORMATION, INJECTING A LIQUID INTO SAID WELL TO INCREASE THE PRESSURE ON SAID FORMATION ABOVE SAID CONSTANT PRESSURE WHILE RETAINING SAID ZONE AT SAID CONSTANT PRESSURE, ISOLATING SAID FORMATION AND SAID ZONE OF CONSTANT PRESSURE FROM SAID LIQUID IN SAID WELL ABOVE SAID FORMATION AND OPENING COMMUNICATION BETWEEN SAID FORMATION AND SAID ZONE OF CONSTANT PRESSURE TO CREATE A SURGE OF FLUID PRIMARILY FROM SAID FORMATION INTO SAID ZONE.
Claim 2
Independent Claim
98 words
A METHOD OF IMPROVING FLUID FLOW FROM A PETROLEUMBEARING INFORMATION PENETRATED BY A WELL COMPRISING ESTABLISHING A ZONE OF A CONSTNT PRESSURE IN SAID WELL SELECTIVELY COMMUNICABLE WITH SAID FORMATION, INJECTING A LIQUID INTO SAID WELL TO INCREASE THE PRESSURE ON SAID FORMATION ABOVE SAID CONSTANT PRESSURE WHILE RETAINING SAID ZONE AT SAID CONSTANT PRESSURE, ISOLATING SAID FORMATION AND SAID ZONE OF CONSTANT PRESSURE FROM SAID LIQUID IN SAID WELL ABOVE SAID FORMATION AND OPENING COMMUNICATION BETWEEN SAID FORMATION AND SAID ZONE OF CONSTANT PRESSURE TO CREATE A SURGE OF FLUID PRIMARILY FROM SAID FORMATION INTO SAID ZONE.
References Cited (Backward Citations)
US582828A
Cited
US1753066A
Cited
US2159023A
Cited
US2361558A
Cited
US2603294A
Cited
US2644532A
Cited
US2671510A
Cited
US2725942A
Cited
US2802534A
Cited
US2935130A
Cited
US3050119A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |