US2727792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pebble gas lift
Assignee: Phillips Petroleum Co
•
Filing: 1952-01-02
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Granted: 1955-12-20
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Expires: 1972-01-02
Abstract
No abstract record available.
Inventors
- 👤 Louis C Bearer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:37
CPC Classifications
F; F28; F28C; F28C3/00; F28C3/10; F28C3/12; F28C3/14; B; B01; B01J; B01J8/00; B01J8/18; B01J8/1881
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A METHOD FOR MAINTAINING CONTINUOUS FLOW IN A GAS LIFT IN A PEBBLE HEATER SYSTEM, WHICH COMPRISES, DETECTING AT LEAST AN IMPENDING BLOCK IN THE LIFT CONDUIT BY DETECTING A PREDETERMINED VARIATION IN A PRESELECTED VARIBLE AND IN RESPONSE TO SAID VARIATION INCREASING THE RATE OF FLOW OF LIFT GAS UPWARDLY THROUGH SAID CONDUIT SUFFICIENT TO OVERCOME THE OBJECTIONABLE CONDITIONS OF PEBBLE FLOW, DECELERATING THE PEBBLES LIFTED AT THE RESULTANT INCREASED VELOCITY BEFORE ENTRY INTO A PEBBLE DROP-OUT CHAMBER TO MINIMIZE MECHANICAL SHOCK THERETO BY DISENGAGING PART OF THE LIFT GAS FROM THE PEBBLE STREAM AT A POINT BELOW SAID DROP OUT CHAMBER, AND DECREASING SAID RATE OF FLOW OF LIFT GAS TO NORMAL AND STOPPING DECELERATION OF PEBBLES AS HEREINBEFORE DESCRIBED WHEN THE VALUE OF THE PRESELECTED VARIABLE INDICATES THAT THE CONDITIONS WHICH CAUSED SAID OBJECTIONABLE PEBBLE FLOW NO LONGER OBTAIN.
Claim 2
Independent Claim
142 words
A METHOD FOR MAINTAINING CONTINUOUS FLOW IN A GAS LIFT IN A PEBBLE HEATER SYSTEM, WHICH COMPRISES, DETECTING AT LEAST AN IMPENDING BLOCK IN THE LIFT CONDUIT BY DETECTING A PREDETERMINED VARIATION IN A PRESELECTED VARIBLE AND IN RESPONSE TO SAID VARIATION INCREASING THE RATE OF FLOW OF LIFT GAS UPWARDLY THROUGH SAID CONDUIT SUFFICIENT TO OVERCOME THE OBJECTIONABLE CONDITIONS OF PEBBLE FLOW, DECELERATING THE PEBBLES LIFTED AT THE RESULTANT INCREASED VELOCITY BEFORE ENTRY INTO A PEBBLE DROP-OUT CHAMBER TO MINIMIZE MECHANICAL SHOCK THERETO BY DISENGAGING PART OF THE LIFT GAS FROM THE PEBBLE STREAM AT A POINT BELOW SAID DROP OUT CHAMBER, AND DECREASING SAID RATE OF FLOW OF LIFT GAS TO NORMAL AND STOPPING DECELERATION OF PEBBLES AS HEREINBEFORE DESCRIBED WHEN THE VALUE OF THE PRESELECTED VARIABLE INDICATES THAT THE CONDITIONS WHICH CAUSED SAID OBJECTIONABLE PEBBLE FLOW NO LONGER OBTAIN.
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) | 1958-12-19 | 1959-06-20 | 1959-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-19 | 1963-06-20 | 1963-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-19 | 1967-06-20 | 1967-12-20 | $7700.00 | Window Closed / Lapsed |