Abstract
We propose a method to calibrate the petro-elastic model in a multi-well fashion, applicable to multimineral,multi-fluid rocks. We use a model that combines Gassmann’s equations (1951) with the modified MacBeth (2004) rock stress sensitivity model (Alvarez & MacBeth, 2013) through a linear search optimisation algorithm, which allows modelling of the variations of the dry-frame elastic moduli with changes in porosity and mineralogy. The importance of the rock framework characterisation on PEM predictions is highlighted, and it is concluded that an over-simplification of the dry-frame characterisation in 4D seismic-related studies can lead to errors of the same magnitude as the 4D seismic signal and therefore these effects cannot be ignored.
| Original language | English |
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| DOIs | |
| Publication status | Published - 17 Feb 2014 |
| Event | EAGE/FESM Joint Regional Conference Petrophysics Meets Geoscience - Kuala Lumpur, Malaysia Duration: 17 Feb 2014 → 18 Feb 2014 |
Conference
| Conference | EAGE/FESM Joint Regional Conference Petrophysics Meets Geoscience |
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| Country/Territory | Malaysia |
| City | Kuala Lumpur |
| Period | 17/02/14 → 18/02/14 |
| Other | "From Nano Pores to Mega Structures" |
Keywords
- 4D seismic
- petro-elastic model
- Gassmann
- multi-mineral