Method of generating a grid on a heterogenous formation crossed by one or more geometric discontinuities in order to carry out simulations
US7047165B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2000 |
| Grant date | May 16, 2006 |
| Priority date | — |
| Expiry date | May 31, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V20/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of generating a hybrid grid of a heterogeneous formation crossed by one or more geometric discontinuities such as, for example, an underground formation where one or more wells have been drilled, or a fractured formation, by combining structured grids and non-structured grids in order to carry out simulations in accordance with a defined numerical pattern is disclosed. Hybrid gridding is performed by associating a first structured grid (G1) for gridding of the heterogeneous medium considering discontinuities thereof with second structured, radial type grids (G2) for gridding of a zone around each pipe or well, which allows better consideration of constraints linked with flows in the zone. In order to connect the first grid of the medium and the second well grids, non-structured transition grids (G3) are interposed there between. A power diagram technique is used, which is particularly advantageous in that it allows appropriate connection of non-regular structured grids. An application is hydrocarbon reservoir simulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.