US3342267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbo-generator heater for oil and gas wells and pipe lines
Assignee: MARSHALL MONTE B
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Filing: 1965-04-29
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Granted: 1967-09-19
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Expires: 1985-04-29
Abstract
No abstract record available.
Inventors
- 👤 Gerald S Cotter
- 👤 James E Huffmaster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:29
CPC Classifications
E; E21; E21B; E21B36/00; E21B36/04; E21B41/00; E21B41/0085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
AN OIL WELL PRODUCTION TUBING HEATER ADAPTED TO BE OPERATIVELY ASSOCIATED WITH A WELL TUBING AT A POINT REMOTE FROM THE SURFACE OF THE GROUND AND COMPRISING IN COMBINATION A SECTION OF OIL WELL TUBING THROUGH WHICH OIL IS PRODUCED, AN ELECTRIC HEATING ELEMENT MOUNTED UPON SAID TUBING SECTION IN GOOD HEAT EXCHANGE RELATION THEREWITH FOR HEATING PRODUCTION FLUID FLOWING UPWARDLY THERETHROUGH, A PRODUCTION FLUID ACTUATED SOURCE OF ELECTRICAL ENERGY MOUNTED UPON SAID TUBING CLOSELY ADJACENT SAID HEATING ELEMENT AND ELECTRICALLY CONNECTED TO AND ENERGIZING THE LATTER FOR ENERGIZING SAID HEATING ELEMENT FROM WITHIN THE WELL, SAID ENERGY SOURCE COMPRISING AN ELECTRIC GENERATOR AND DRIVING MEANS COUPLED THERETO, SAID HEATING ELEMENT BEING DISPOSED WITHIN SAID TUBING AND OF AN ANNULAR CONFIGURATION THEREBY PRESENTING A MINIMUM RESISTANCE TO THE FLOW OF FLUID THERETHROUGH, SAID DRIVING MEANS COMPRISING A PRODUCTION FLUID ACTUATED TURBINE DISPOSED WITHIN SAID TUBING AND OPERATED BY PRODUCTION FLUID FLOWING UPWARDLY THROUGH SAID TUBING.
Claim 2
Dependent Claim
155 words
AN OIL WELL PRODUCTION TUBING HEATER ADAPTED TO BE OPERATIVELY ASSOCIATED WITH A WELL TUBING AT A POINT REMOTE FROM THE SURFACE OF THE GROUND AND COMPRISING IN COMBINATION A SECTION OF OIL WELL TUBING THROUGH WHICH OIL IS PRODUCED, AN ELECTRIC HEATING ELEMENT MOUNTED UPON SAID TUBING SECTION IN GOOD HEAT EXCHANGE RELATION THEREWITH FOR HEATING PRODUCTION FLUID FLOWING UPWARDLY THERETHROUGH, A PRODUCTION FLUID ACTUATED SOURCE OF ELECTRICAL ENERGY MOUNTED UPON SAID TUBING CLOSELY ADJACENT SAID HEATING ELEMENT AND ELECTRICALLY CONNECTED TO AND ENERGIZING THE LATTER FOR ENERGIZING SAID HEATING ELEMENT FROM WITHIN THE WELL, SAID ENERGY SOURCE COMPRISING AN ELECTRIC GENERATOR AND DRIVING MEANS COUPLED THERETO, SAID HEATING ELEMENT BEING DISPOSED WITHIN SAID TUBING AND OF AN ANNULAR CONFIGURATION THEREBY PRESENTING A MINIMUM RESISTANCE TO THE FLOW OF FLUID THERETHROUGH, SAID DRIVING MEANS COMPRISING A PRODUCTION FLUID ACTUATED TURBINE DISPOSED WITHIN SAID TUBING AND OPERATED BY PRODUCTION FLUID FLOWING UPWARDLY THROUGH SAID 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) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |