Patent US3266572A successfully refreshed from Google Patents.
US3266572A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stimulation of production of underground fluids by use of techniques involving high energy combustion principles
Assignee: Dow Chemical Co
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Filing: 1963-12-06
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Granted: 1966-08-16
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Expires: 1983-12-06
Abstract
No abstract record available.
Inventors
- 👤 Paul E Woodward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:29
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
THE METHOD OF TREATING A FORMATION PENETRATED BY A WELLBORE WHICH CONSISTS ESSENTIALLY OF INJECTING DOWN THE WELLBORE A FIRST COMPONENT OF HYPERGOLIC MIXTURE SELECTED FROM THE CLASS CONSISTING OF LIQUID FUELS AND LIQUID OXIDIZERS; INJECTING DOWN THE WELLBORE A SPACER LIQUID WHICH IS SUBSTANTIALLY CHEMICALLY INERT TO SAID FIRST COMPONENT; INJECTING DOWN THE WELLBORE A SECOND COMPONENT, TO WHICH SAID SPACER LIQUID SUBSTANTIALLY INERT AND WHICH CREATES A HYPERGOLIC MIXTURE WHEN BROUGHT INTO CONTACT WITH SAID FIRST COMPONENT, WHICH IS MAINTAINED SPACED APART FROM SAID FORST COMPONENT BY SAID SPACER LIQUID IN THE WELLBORE; INJECTING DOWN THE WELLBORE A LIQUID WHICH IS SUBSTANTIALLY INERT TO SAID SECOND COMPONENT IN AN AMOUNT SUFFICIENT TO DISPLACE SAID FIRST COMPONENT, SPACER LIQIUD, AND SECOND COMPONENT INTO THE FORMATION THEREBY TO BRING ABOUT SOME INTERMINGLING OF SAID FIRST AND SECOND COMPONENTS IN THE FORMATION AT A DISTANCE FROM THE WELLBORE TO CAUSE COMBUSTION BETWEEN SAID COMPONENTS AND ACCOMPANYING HEAT, PRESSURE, AND TURBULENCE, EXTENDING OVER AN APPRECIABLE LENGTH OF TIME, WHEREBY FRACTURES ARE CREATED AND PORTIONS OF THE FORMATION RELATIVELY REMOTE FROM THE WELLBORE ARE SHATTERED AND RENDERED MORE PERMEABLE.
Claim 2
Independent Claim
186 words
THE METHOD OF TREATING A FORMATION PENETRATED BY A WELLBORE WHICH CONSISTS ESSENTIALLY OF INJECTING DOWN THE WELLBORE A FIRST COMPONENT OF HYPERGOLIC MIXTURE SELECTED FROM THE CLASS CONSISTING OF LIQUID FUELS AND LIQUID OXIDIZERS; INJECTING DOWN THE WELLBORE A SPACER LIQUID WHICH IS SUBSTANTIALLY CHEMICALLY INERT TO SAID FIRST COMPONENT; INJECTING DOWN THE WELLBORE A SECOND COMPONENT, TO WHICH SAID SPACER LIQUID SUBSTANTIALLY INERT AND WHICH CREATES A HYPERGOLIC MIXTURE WHEN BROUGHT INTO CONTACT WITH SAID FIRST COMPONENT, WHICH IS MAINTAINED SPACED APART FROM SAID FORST COMPONENT BY SAID SPACER LIQUID IN THE WELLBORE; INJECTING DOWN THE WELLBORE A LIQUID WHICH IS SUBSTANTIALLY INERT TO SAID SECOND COMPONENT IN AN AMOUNT SUFFICIENT TO DISPLACE SAID FIRST COMPONENT, SPACER LIQIUD, AND SECOND COMPONENT INTO THE FORMATION THEREBY TO BRING ABOUT SOME INTERMINGLING OF SAID FIRST AND SECOND COMPONENTS IN THE FORMATION AT A DISTANCE FROM THE WELLBORE TO CAUSE COMBUSTION BETWEEN SAID COMPONENTS AND ACCOMPANYING HEAT, PRESSURE, AND TURBULENCE, EXTENDING OVER AN APPRECIABLE LENGTH OF TIME, WHEREBY FRACTURES ARE CREATED AND PORTIONS OF THE FORMATION RELATIVELY REMOTE FROM THE WELLBORE ARE SHATTERED AND RENDERED MORE PERMEABLE.
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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |