Apparatus and methods for canceling the effects of fluid storage in downhole tools
US7013723B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2003 |
| Grant date | Mar 21, 2006 |
| Priority date | — |
| Expiry date | Dec 25, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/008
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The effects of storage on the interpretation of data obtained at observation probes of a borehole tool are eliminated by controlling the storage volumes relative to the observation probes. For a homogeneous medium, the effect of storage on the interpretation of data is eliminated by causing the flow line volumes connected to each observation probe to be equal to each other. For a heterogeneous medium, the effect of storage on the interpretation of data is eliminated by causing the flow line volumes to vary in proportion to the relative permeabilities of the strata of the heterogeneous medium adjacent the probes. The borehole tool is provided with mechanisms for conducting flow line volume adjustment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.