Full text loading...
-
Optimization of Brittleness Estimation Using Rock Physics Templates
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 79th EAGE Conference and Exhibition 2017, Jun 2017, Volume 2017, p.1 - 5
Abstract
The absence of a universally accepted definition and measurement of brittleness in shale gas plays has led to various methods or models for its quantification. To enhance the reliability of brittleness for evaluating reservoir quality, the paper proposes to optimize the brittleness estimation using rock physics templates. It begins with constructing a rock physics workflow to link the elastic properties of shales to complex constituents and specific microstructure attributes, followed by calibration with well log data, the constructed rock physics template could be used for geophysical prediction of porosity and lithology. Last, the brittleness index defined in terms of mineralogy and different geomechanical parameters based on the template is investigated. Consistent with the well-derived brittleness analysis, the constructed templates show great potential for deciding a better brittleness indicator in practice and enhancing the applicability of well log and seismic data for the estimation of brittleness.