Accuracy of shaly sand formation evaluation
US7168310B2 · kind B2 · utility
16Cited by
16References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 26, 2004 |
| Grant date | Jan 30, 2007 |
| Priority date | — |
| Expiry date | Oct 16, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/306
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A novel process and methodology in deterministic formation evaluation is provided. The formation evaluation results can accurately quantify formation attributes, such as clay-volume, clay-bound-water, effective-porosity and water saturation in shaly sands. Total-porosity is determined using porosity-logs, such as density, neutron and sonic logs. After clay-volume and total-porosity are determined, sand volume (quartz, feldspar, mica . . . ) is the remaining part in the bulk formation evaluated, see FIG. 5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.