Method of formation testing
US5703286A · kind A · utility
52Cited by
11References
7Claims
0Family size
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Key dates
| Filing date | Oct 20, 1995 |
| Grant date | Dec 30, 1997 |
| Priority date | — |
| Expiry date | Oct 20, 2015 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A new technique for interpreting pressure data measured during a formation test. The new technique uses an exact spherical flow model that considers the effects of flow line storage and that can be solved in closed, analytical form. This technique generates a type-curve that matches the entire measured pressure plot and that can accurately predict ultimate formation pressure during formation testing from a pressure plot that has not achieved steady state values near the formation pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.