Method for determining formation porosity and gas saturation in a gas reservoir
US7282704B2 · kind B2 · utility
8Cited by
17References
31Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 28, 2004 |
| Grant date | Oct 16, 2007 |
| Priority date | — |
| Expiry date | Mar 9, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V5/125
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Measurements made with porosity and density logging tools in a gas reservoir may differ due to invasion effects. The effects are particularly large on measurement-while-drilling applications where invasion is minimal. Using a Monte-Carlo method, a relationship is established between true formation porosity and porosity estimates from density and porosity tools. This relationship is used on real data to get an improved estimate of formation porosity and of gas saturation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.