Patent US3196947A successfully refreshed from Google Patents.
US3196947A
Expired / Lapsed
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Method for facilitating the production of viscous petroleum through a well
Assignee: Marathon Oil Co
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Filing: 1962-06-14
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Granted: 1965-07-27
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Expires: 1982-06-14
Abstract
No abstract record available.
Inventors
- 👤 Hendrik K Van Poollen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:27
CPC Classifications
E; E21; E21B; E21B43/00; Y; Y10; Y10T; Y10T137/00; Y10T137/4238
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
THE METHOD FOR FACILITATING THE PRODUCTIN OF VISCOUS PETROLEUM FROM THE PRODUCTION ZONE OF A WELL WHICH COMPRISES PROVIDING A PRODUCTION TUBING IN THE WELL, INTRODUCING TO THE WELL ADJACENT THE PRODUCTION ZONE THEREOF A LOW VISCOSITY LUBRICATING FLUID NOT MISCIBLE WITH THE PETROLEUM, AND ADMITTING THE LUBRICATING FLUID TO THE INNER PERIPHERY OF THE TUBING ABOUT THE VISCOUS PETROLEUM TO MAINTAIN A LAYER OF FLUID ABOUT THE PETROLEUM FLOWING UPWARDLY IN THE TUBING TO REDUCE WALL FRICTION AND FACILITATE THE FLOW OF PETROLEUM THROUGH THE TUBING.
Claim 2
Independent Claim
87 words
THE METHOD FOR FACILITATING THE PRODUCTIN OF VISCOUS PETROLEUM FROM THE PRODUCTION ZONE OF A WELL WHICH COMPRISES PROVIDING A PRODUCTION TUBING IN THE WELL, INTRODUCING TO THE WELL ADJACENT THE PRODUCTION ZONE THEREOF A LOW VISCOSITY LUBRICATING FLUID NOT MISCIBLE WITH THE PETROLEUM, AND ADMITTING THE LUBRICATING FLUID TO THE INNER PERIPHERY OF THE TUBING ABOUT THE VISCOUS PETROLEUM TO MAINTAIN A LAYER OF FLUID ABOUT THE PETROLEUM FLOWING UPWARDLY IN THE TUBING TO REDUCE WALL FRICTION AND FACILITATE THE FLOW OF PETROLEUM THROUGH THE TUBING.
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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |