Full text loading...
-
The Methane Storage Capacity of Black Shales
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 3rd EAGE Shale Workshop - Shale Physics and Shale Chemistry, Jan 2012, cp-275-00038
- ISBN: 978-94-6282-062-3
- Previous article
- Table of Contents
- Next article
Abstract
Estimations of gas storage capacities (GIP) are crucial in evaluation of gas shale plays, yet they are affected by a great deal of uncertainty owing to strong heterogeneity of shale rocks, scarcity of available data and our incomplete knowledge of storage mechanisms in gas shales and their dependence on reservoir conditions. Storage capacity of gas shales comprises compressed (“free”) gas in the pore volume as well as sorbed gas associated mainly with organic matter and clay minerals. The relative significance of free vs. sorbed gas remains to be established for a broader range of samples and experimental conditions. Some authors suggest that at high temperatures the total storage capacity of gas shale play is controlled primarily by total effective porosity with only a negligible contribution from sorbed gas (e.g. [1]).