US2818728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production testing of wells while varying producing conditions
Assignee: Pan American Petroleum Corp
•
Filing: 1953-08-14
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Granted: 1958-01-07
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Expires: 1973-08-14
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Hartline
- 👤 Silverman Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:35
CPC Classifications
E; E21; E21B; E21B49/00; E21B49/08; E21B49/087
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
THE METHOD OF TESTING WELL WHICH PRODUCE BOTH OIL AND WATER WHICH COMPRISES THE STEPS OF CHANGING THE RATE OF WITHDRAWAL OF LIQUIDS FROM NEAR THE WELL BOTTOM TO CHANGE THE PRODUCING CONDITIONS OF A WELL AND INITIATE
Claim 2
Independent Claim
38 words
THE METHOD OF TESTING WELL WHICH PRODUCE BOTH OIL AND WATER WHICH COMPRISES THE STEPS OF CHANGING THE RATE OF WITHDRAWAL OF LIQUIDS FROM NEAR THE WELL BOTTOM TO CHANGE THE PRODUCING CONDITIONS OF A WELL AND INITIATE
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) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |