Well logging method for determining fractional flow characteristics of earth formations
US5497321A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 1994 |
| Grant date | Mar 5, 1996 |
| Priority date | — |
| Expiry date | Jan 11, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/38
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A logging tool provides a log of fractional flow characteristics of formations surrounding an earth borehole. The logging tool is suspended in the borehole and resistivity measurements are made at different radial depths of investigation while the logging tool is moved through the borehole to obtain several resistivity logs. Model fractional flow parameters are selected, and a formation conductivity model as a function of the model fractional flow parameters is determined. Several simulated resistivity log values are generated at respective radial depths of investigation from the formation conductivity model. The simulated resistivity log values are compared with values from the resistivity logs of the resistivity measurements to obtain an error indication. The model fractional flow parameters is modified accordingly. Steps are repeated until a predetermined criterion is met, then an output of formation fractional flow characteristics is produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.