Cable-suspended,linear-supported electric pump installation in well casing
Abstract
Abstract A CABLE-SUSPENDED, SUBMERGIBLE ELECTRIC PUMP INSTALLATION FOR USE IN A WELL CASING, INCLUDING CONCENTRICALLY CONNECTED PUMP, MOTOR AND MOTOR PROTECTING UNITS. A RETRIEVABLE CYLINDRICAL LINER ENCIRCLES THE CABLE AND EXTENDS INTO THE WELL CASING FROM GROUND LEVEL TO ENCLOSE THE DISCHARGE HEAD OF THE PUMP UNIT, WHERE A SHOE IS PROVIDED ON THE LINER TO ACTUALLY SUPPORT THE INSTALLATION AT A PREDETERMINED OPERATIVE ELEVATION IN THE WELL. THE PUMP INTAKE COMMUNICATES WITH THE WELL FLUID IN THE CASING, AND THE PUMP DISCHARGES TO THE EARTH''S SURFACE THROUGH THE LINER. THE ANNULUS BETWEEN THE LINER AND CASING ACTS AS A GAS SEPERATOR. ALL ELECTRIC CONNECTIONS AND SPLICES ARE MADE IN A LOW PRESSURE ZONE EFFECTED BY THE PUMP INTAKE, REMOVED FROM THE HIGH PRESSURE ZONE INFLUENCED BY THE PUMP DISCHARGE, TO AVOID THE DETRIMENTAL EFFECTS OF HIGH PRESSURE ON THE CONNECTION AND SPLICES. THE INSTALLATION ALSO INCLUDES MEANS TO PERMIT THE FLUSHING OF SAND WHICH MAY ACCUMULATE IN THE LINER ADJACENT THE PUMP DISCHARGE HEAD.
Inventors
- 👤 Armais Arutunoff
- 👤 John C O'rourke
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |