Patent US3250328A successfully refreshed from Google Patents.
US3250328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil production method utilizing in situ chemical heating of hydrocarbons
Assignee: Shell USA Inc
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Filing: 1963-11-19
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Granted: 1966-05-10
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Expires: 1983-11-19
Abstract
No abstract record available.
Inventors
- 👤 Philip J Closmann
- 👤 Prats Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:26
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A METHOD OF PRODUCING LIQUID OR LIQUIFIABLE HYDROCARBONS FROM A HYDROCARBON-CONTAINING SUBSURFACE FORMATION, FORMATION BEING PENETRATED BY AT LEAST ONE WELL, SAID METHOD COMPRISING: INTRODUCING INTO A WELL A QUANTITY OF A SOLIDS-FREE LIQID REACTANT WHICH REACTS EXOTHERMICALLY WITH HYDROCARBONS, CONFINING SAID LIQUID REACTANT IN SAID WELL OPPOSITE A SELECTED INTERVAL OF SAID HYDROCARBON-CONTAINING FORMATION, APPLYING A PRESSURE TO SAID LIQUID REACTANT SUFFICIENT TO FORM FRACTURES IN SAID HYDROCARBON-CONTAINING FORMATION, SUBSEQUENTLY MAINTAINING SAID LIQUID REACTANT IN SAID FRACTURES FOR A TIME SUFFICIENT FOR THE LIQUID REACTANT TO REACT EXOTHERMICALLY WITH A PORTION OF SAID HYDROCARBON OF SAID FORMATION AND HEAT THE HYDROCARBONCONTAINING FORMATION ADJACENT THE WELL, AND SUBSEQUENTLY PRODUCING HYDROCARBONS FROM THE HEATED HYDROCARBON-CONTAINING FORMATION ADJACENT THE FRACTURES TO FORM PERMEABLE FLOW CHANNELS IN SAID FORMATION ALONG SAID FRACTURES.
Claim 2
Independent Claim
129 words
A METHOD OF PRODUCING LIQUID OR LIQUIFIABLE HYDROCARBONS FROM A HYDROCARBON-CONTAINING SUBSURFACE FORMATION, FORMATION BEING PENETRATED BY AT LEAST ONE WELL, SAID METHOD COMPRISING: INTRODUCING INTO A WELL A QUANTITY OF A SOLIDS-FREE LIQID REACTANT WHICH REACTS EXOTHERMICALLY WITH HYDROCARBONS, CONFINING SAID LIQUID REACTANT IN SAID WELL OPPOSITE A SELECTED INTERVAL OF SAID HYDROCARBON-CONTAINING FORMATION, APPLYING A PRESSURE TO SAID LIQUID REACTANT SUFFICIENT TO FORM FRACTURES IN SAID HYDROCARBON-CONTAINING FORMATION, SUBSEQUENTLY MAINTAINING SAID LIQUID REACTANT IN SAID FRACTURES FOR A TIME SUFFICIENT FOR THE LIQUID REACTANT TO REACT EXOTHERMICALLY WITH A PORTION OF SAID HYDROCARBON OF SAID FORMATION AND HEAT THE HYDROCARBONCONTAINING FORMATION ADJACENT THE WELL, AND SUBSEQUENTLY PRODUCING HYDROCARBONS FROM THE HEATED HYDROCARBON-CONTAINING FORMATION ADJACENT THE FRACTURES TO FORM PERMEABLE FLOW CHANNELS IN SAID FORMATION ALONG SAID FRACTURES.
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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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |