Apparatus for analysis and control of a reciprocating pump system by determination of a pump card
US8036829B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2008 |
| Grant date | Oct 11, 2011 |
| Priority date | — |
| Expiry date | Feb 23, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/009
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An instrumentation system for assessing operation of a reciprocating pump system which produces hydrocarbons from a non-vertical or a vertical wellbore. The instrumentation system periodically produces a downhole pump card as a function of a directly or indirectly measured surface card and a friction law function from a wave equation which describes the linear vibrations in a long slender rod. A control signal or command signal is generated based on characteristics of the downhole pump card for controlling the pumping system. It also generates a pump and well analysis report that is useful for a pump operation and determination of its condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.