Method and installation for locating the position of the boundary formed at the interface between two fluids contained in a reservoir
US6999878B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 25, 2002 |
| Grant date | Feb 14, 2006 |
| Priority date | — |
| Expiry date | Feb 4, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Process for the location of the position of the interface (5) between two fluids (f1, f2) each contained in a zone (7-1, 7-2) of a reservoir (4) in which: a) a reference transient flow condition that produces a reference pressure difference (ΔPref(t)), is initiated in a reservoir (4) that comprises at least one pressure sensor (8) located within one of the zones (Z1), b) later an effective transient flow condition that produces a pressure wave which propagates within the reservoir (4) producing an effective pressure difference (ΔPu1?(t)) is initiated, c) the pressure differences (ΔPref(t)), (ΔPu1(t)) are compared, d) a point in time (Δ1) that represents the instant when the pressure wave reaches the interface (5) between the two fluids (f1, f2) is determined, the distance (L1) between the interface (5) and the pressure sensor (8) is calculated. The operations b) to d) are repeated in order to monitor movement of the boundary. Application in the petroleum industry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.