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US3314477A Expired / Lapsed US ⏱️ 0.0 years remaining

Well treatment employing a hypergolic system

Assignee: Dow Chemical Co
•
Filing: 1964-12-11
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Granted: 1967-04-18
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Expires: 1984-12-11
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Abstract

No abstract record available.

Inventors

  • 👤 Billy G Boevers
  • 👤 Paul E Woodward
  • 👤 Curtis W Crowe
  • 👤 Archie N Barron

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 20:31
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/82

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 198 words
THE METHOD COMPRISING THE STEPS OF: (1) ADMIXING WITH A FIRST COMPONENT OF A HYPERGOLIC MIXTURE SELECTED FROM LIQUID FUELS AND LIQUID OXIDIZERS A POLYMER SWELLABLE AND DISPERSIBLE IN SAID COMPONENT BUT INSOLUBLE THEREIN IN AN AMOUNT SUFFICIENT TO IMBIBE SAID COMPONENT; (2) ADMIXING A LIQUID, WITH THE POLYMER CONTAINING THE SO IMBIBED COMPONENT, SELECTED FROM THE CLASS CONSISTING OF ADDITIONAL LIQUID COMPONENT AND AQUEOUS AND HYDROCARBON LIQUIDS SUBSTANTIALLY CHEMICALLY INERT TO THE COMPONENT OF SAID HYPERGOLIC MIXTURE AND TO THE POLYMER IN AN AMOUNT TO RENDER THE RESULTING COMPOSITION FLOWABLE; (3) INJECTING THE FLOWABLE FIRST COMPONENT COMPOSITION INTO THE WELLBORE OF A WELL; (4) POSITIONING A SPACER MEANS IN THE WELLBORE ABOVE SAID FLOWABLE FIRST COMPONENT COMPOSITION; (5) INJECTING A SECOND COMPONENT OF A HYPERGOLIC MIXTURE SELECTED FROM THE CLASS CONSISTING OF AN OXIDIZER, WHEN SAID FIRST COMPONENT IS A FUEL, AND A FUEL WHICH MAKES A HYPERGOLIC MIXTURE WHEN ADMIXED WITH THE OXIDIZER, WHEN SAID FIRST COMPONENT IS AN OXIDIZER; AND (6) INJECTING A DISPLACING LIQUID INTO THE WELLBORE AT SUFFICIENT PRESSURE TO DISPLACE SUBSTANTIALLY ALL OF SAID FIRST AND SECOND COMPONENTS FORM THE WELLBORE AND INTO THE FORMATION WHEREBY THEY ARE INTERMIXED IN THE FORMATION.
Claim 2
Independent Claim 198 words
THE METHOD COMPRISING THE STEPS OF: (1) ADMIXING WITH A FIRST COMPONENT OF A HYPERGOLIC MIXTURE SELECTED FROM LIQUID FUELS AND LIQUID OXIDIZERS A POLYMER SWELLABLE AND DISPERSIBLE IN SAID COMPONENT BUT INSOLUBLE THEREIN IN AN AMOUNT SUFFICIENT TO IMBIBE SAID COMPONENT; (2) ADMIXING A LIQUID, WITH THE POLYMER CONTAINING THE SO IMBIBED COMPONENT, SELECTED FROM THE CLASS CONSISTING OF ADDITIONAL LIQUID COMPONENT AND AQUEOUS AND HYDROCARBON LIQUIDS SUBSTANTIALLY CHEMICALLY INERT TO THE COMPONENT OF SAID HYPERGOLIC MIXTURE AND TO THE POLYMER IN AN AMOUNT TO RENDER THE RESULTING COMPOSITION FLOWABLE; (3) INJECTING THE FLOWABLE FIRST COMPONENT COMPOSITION INTO THE WELLBORE OF A WELL; (4) POSITIONING A SPACER MEANS IN THE WELLBORE ABOVE SAID FLOWABLE FIRST COMPONENT COMPOSITION; (5) INJECTING A SECOND COMPONENT OF A HYPERGOLIC MIXTURE SELECTED FROM THE CLASS CONSISTING OF AN OXIDIZER, WHEN SAID FIRST COMPONENT IS A FUEL, AND A FUEL WHICH MAKES A HYPERGOLIC MIXTURE WHEN ADMIXED WITH THE OXIDIZER, WHEN SAID FIRST COMPONENT IS AN OXIDIZER; AND (6) INJECTING A DISPLACING LIQUID INTO THE WELLBORE AT SUFFICIENT PRESSURE TO DISPLACE SUBSTANTIALLY ALL OF SAID FIRST AND SECOND COMPONENTS FORM THE WELLBORE AND INTO THE FORMATION WHEREBY THEY ARE INTERMIXED IN THE FORMATION.

References Cited (Backward Citations)

US2889884A Cited
US3075463A Cited
US3181612A Cited
US3252904A Cited
US3270815A Cited
US3266572A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1970-04-17 1970-10-17 1971-04-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1974-04-17 1974-10-17 1975-04-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1978-04-17 1978-10-17 1979-04-18 $7700.00 Window Closed / Lapsed

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