US3352355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of recovery of hydrocarbons from solid hydrocarbonaceous formations
Assignee: Dow Chemical Co
•
Filing: 1965-06-23
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Granted: 1967-11-14
•
Expires: 1985-06-23
Abstract
No abstract record available.
Inventors
- 👤 Maurice W Putman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:21
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/30; E21B43/34; E21B43/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A METHOD FOR THE PRODUCTION OF HYDROCARBONS FROM NATURALLY OCCURING SOLID HYDROCARBONACEOUS FORMATIONS WHICH COMPRISES PROVIDING AT LEAST FOUR WELLS INTO SAID FORMATION WHEREIN AT LEAST THREE OF SAID WELLS ARE SPACED FROM ONE ANOTHER AROUND THE PERIPHERY OF A PORTION OF SUCH FORMATION AND AT LEAST ONE SUCH WELL IS LOCATED CENTRALLY WITHIN SAID PORTION OF SUCH FORMATION, PROVIDING A SUBSTANTIALLY HORIZONTAL PERMEABLE SECTION WITHIN SAID FORMATION WHICH JOINS ALL OF SAID WELLS, INJECTING WATER CONTINUOUSLY INTO SAID CENTRAL WELL, INJECTING INTO AT LEAST ONE OF SAID PERIPHERAL WELLS A HYDROCARBON AT A TEMPERATURE GREATER THAN 600*F., INJECTING INTO AT LEAST ONE OTHER OF
Claim 2
Independent Claim
105 words
A METHOD FOR THE PRODUCTION OF HYDROCARBONS FROM NATURALLY OCCURING SOLID HYDROCARBONACEOUS FORMATIONS WHICH COMPRISES PROVIDING AT LEAST FOUR WELLS INTO SAID FORMATION WHEREIN AT LEAST THREE OF SAID WELLS ARE SPACED FROM ONE ANOTHER AROUND THE PERIPHERY OF A PORTION OF SUCH FORMATION AND AT LEAST ONE SUCH WELL IS LOCATED CENTRALLY WITHIN SAID PORTION OF SUCH FORMATION, PROVIDING A SUBSTANTIALLY HORIZONTAL PERMEABLE SECTION WITHIN SAID FORMATION WHICH JOINS ALL OF SAID WELLS, INJECTING WATER CONTINUOUSLY INTO SAID CENTRAL WELL, INJECTING INTO AT LEAST ONE OF SAID PERIPHERAL WELLS A HYDROCARBON AT A TEMPERATURE GREATER THAN 600*F., INJECTING INTO AT LEAST ONE OTHER OF
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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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |