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US3027319A
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US
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Reduction of sludge deposition from crude oils
Assignee: BP PLC
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Filing: 1955-06-14
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Granted: 1962-03-27
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Expires: 1975-06-14
Abstract
No abstract record available.
Inventors
- 👤 Meyer Percy
- 👤 Griffiths Graham Neville
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:23
CPC Classifications
C; C10; C10G; C10G31/00; C10G31/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A CONTINUOUS PROCESS FOR TREATING CRUDE OIL TO REDUCE ITS TENDENCY TO DEPOSIT SLUDGE ON STORAGE COMPRISING HEATING THE OIL FROM A TEMPERATURE NOT HIGHER THAN ABOUT 70* F. TO AN ELEVATED TEMPERATURE ABOVE 100*F. BY DISSOLVING COMPRESSED VAPORS THEREIN WHICH HAVE BEEN OBTAINED FROM SAID OIL, SAID MAXIMUM ELEVATED TEMPERATURE BEING THAT TEMPERATURE AT WHICH MINIMUM SLUDGE DEPOSITION, BY TEST, IS DEPOSITED, SUBJECTING THE HEATED OIL TO AUTO-REFRIGERATION TO PRODUCE OIL VAPORS, THEREFROM, COMPRESSING SAID PRODUCED VAPORS, AND PASSING THE COMPRESSED VAPORS TO THE OIL UNDERGOING TREATMENT FOR DISSOLUTION THEREIN TO HEAT SAME.
Claim 2
Dependent Claim
94 words
A CONTINUOUS PROCESS FOR TREATING CRUDE OIL TO REDUCE ITS TENDENCY TO DEPOSIT SLUDGE ON STORAGE COMPRISING HEATING THE OIL FROM A TEMPERATURE NOT HIGHER THAN ABOUT 70* F. TO AN ELEVATED TEMPERATURE ABOVE 100*F. BY DISSOLVING COMPRESSED VAPORS THEREIN WHICH HAVE BEEN OBTAINED FROM SAID OIL, SAID MAXIMUM ELEVATED TEMPERATURE BEING THAT TEMPERATURE AT WHICH MINIMUM SLUDGE DEPOSITION, BY TEST, IS DEPOSITED, SUBJECTING THE HEATED OIL TO AUTO-REFRIGERATION TO PRODUCE OIL VAPORS, THEREFROM, COMPRESSING SAID PRODUCED VAPORS, AND PASSING THE COMPRESSED VAPORS TO THE OIL UNDERGOING TREATMENT FOR DISSOLUTION THEREIN TO HEAT SAME.
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) | 1965-03-26 | 1965-09-25 | 1966-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-26 | 1969-09-25 | 1970-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-26 | 1973-09-25 | 1974-03-27 | $7700.00 | Window Closed / Lapsed |