What is it about?
Understanding how fractures in coal seams help to predict the production performance of a well. Sonic and resistivity image log reveal stress state and fracture conditions, and we link fracture orientations to fast shear wave angles.
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Photo by Jannet Serhan on Unsplash
Why is it important?
We have found by using Mohr's Coulomb criteria that fractures in coal seams are not interconnected and therefore there was no gas production to date after the dewatering period. Our observations indicated that identified fractures existed in a non-critically stressed condition, suggesting a lack of interconnectivity among them. These findings correspond to the absence of gas production to date, providing insights into the dynamics of fractures and their impact on production behavior.
Perspectives
This study has helped to understand the case for non-gas production in a well. Stress state and fracture contribute to understanding the dynamics of production behavior.
Dr Abir Banerjee
Oil and Natural Gas Corp
Read the Original
This page is a summary of: Implication of Fast Shear Wave Azimuth and Critically Stressed Fractures in Coalbed Methane Reservoir, Interpretation, May 2024, Society of Exploration Geophysicists,
DOI: 10.1190/int-2023-0119.1.
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