Inferred production rates of a rod pumped well from surface and pump card information
US7212923B2 · kind B2 · utility
23Cited by
3References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 5, 2005 |
| Grant date | May 1, 2007 |
| Priority date | — |
| Expiry date | Mar 13, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/009
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for inferring production of a rod pumped well. Inferred production is estimated in a well manager which not only performs pump-off control with a down-hole pump card, but also estimates liquid (oil-water) and gas production using the subsurface pump as a meter. Methods are incorporated in the well manager for identifying and quantifying several conditions: pump leakage, unanchored tubing, free gas and oil shrinkage. Quantifying such conditions in the well manger enables accurate inferring of production thereby eliminating the need for traditional well tests.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.