Inline downhole heater
US7509036B2 · kind B2 · utility
0Cited by
4References
23Claims
0Family size
Inventor
Key dates
| Filing date | Sep 4, 2007 |
| Grant date | Mar 24, 2009 |
| Priority date | — |
| Expiry date | Sep 4, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B36/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A well bore fluid is being heated to prevent paraffin build-up in the production line by an electrical heating element lowered into a pre-determined subterranean location. The heating element is controlled by a control unit that is connected to a temperature sensor, which detects temperature in the vicinity of the heating element and energizes an above-the-surface electric power source to deliver sufficient electric power to the electric heating element to keep the paraffin substance in a liquefied state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.