US2740478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressurizing of wells by gaseous release
Assignee: Individual
•
Filing: 1953-02-24
•
Granted: 1956-04-03
•
Expires: 1973-02-24
Abstract
No abstract record available.
Inventors
- 👤 Haskell M Greene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:18
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/52; C09K8/524; E; E21; E21B; E21B37/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
WELL TREATING APPARATUS COMPRISING A BODY ADAPTED TO BE LOWERED INTO A WELL, TWO PACKERS CARRIED BY THE BODY ADAPTED TO ENGAGE THE WELL BORE WALL AND SEAL THE BORE AT TWO VERTICALLY SPACED UPPER AND LOWER LOCATIONS AGAINST BOTH UPWARD AND DOWNWARD ESCAPE OF GASES FROM BETWEEN SAID TWO LOCATIONS, AND A GAS PRODUCING CHARGE CARRIED BY THE BODY AND CONSTRUCTED TO PRODUCE A LARGE QUANTITY OF GASES UNDER HIGH PRESSURE VERTICALLY BETWEEN THE PACKERS AT A POSITION TO APPLY THE FORCE OF SAID GASES TO THE BORE WALL BETWEEN SAID SPACED LOCATIONS.
Claim 2
Dependent Claim
94 words
WELL TREATING APPARATUS COMPRISING A BODY ADAPTED TO BE LOWERED INTO A WELL, TWO PACKERS CARRIED BY THE BODY ADAPTED TO ENGAGE THE WELL BORE WALL AND SEAL THE BORE AT TWO VERTICALLY SPACED UPPER AND LOWER LOCATIONS AGAINST BOTH UPWARD AND DOWNWARD ESCAPE OF GASES FROM BETWEEN SAID TWO LOCATIONS, AND A GAS PRODUCING CHARGE CARRIED BY THE BODY AND CONSTRUCTED TO PRODUCE A LARGE QUANTITY OF GASES UNDER HIGH PRESSURE VERTICALLY BETWEEN THE PACKERS AT A POSITION TO APPLY THE FORCE OF SAID GASES TO THE BORE WALL BETWEEN SAID SPACED LOCATIONS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-03 | 1959-10-03 | 1960-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-03 | 1963-10-03 | 1964-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-03 | 1967-10-03 | 1968-04-03 | $7700.00 | Window Closed / Lapsed |