Well production control system
US4594665A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1984 |
| Grant date | Jun 10, 1986 |
| Priority date | — |
| Expiry date | Feb 13, 2004 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/009
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Apparatus for detecting fluid pound in a sucker-rod oil well, using values of sucker-rod position and of sucker-rod load to calculate a reference position and a selected load value. The apparatus continually updates the reference positions and selected load values to compensate for drift in characteristics of transducers used in determining rod load and rod position and for a gradual change in well characteristics. When the sucker-rod moves downward to the updated reference position, the actual rod load is checked against the updated selected value and a warning signal develops when the amount of load exceeds the updated selected value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.