What question did this study set out to answer?

The study aims to uncover how lithofacies, mineralogy, and organic matter impact sweet spot distribution in shale gas reservoirs.

March 7, 2026GeosciencesOpen Access

Synergetic Controls of Lithofacies, Mineralogy, and Organic Matter on Sweet Spot Distribution in Shale Gas Reservoir: A Case Study from Permian Shanxi Formation, Eastern Ordos Basin

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The study aims to uncover how lithofacies, mineralogy, and organic matter impact sweet spot distribution in shale gas reservoirs.
Multi-dimensional characterization of shale gas reservoirs
Integration of drilling/logging data and core analyses
Use of X-ray diffraction (XRD) and organic geochemical testing
Assessment of porosity, permeability, and gas content desorption
Identification of three lithofacies associations: mud-wrapped sand, sand-mud interbedding, and sand-wrapped mud
Type III kerogen dominates organic matter with TOC values between 0.04% and 12.15%
Average total organic carbon (TOC) is higher in the Shan 2 Member (2.55%) compared to the Shan 1 Member (1.36%)
Average porosity is ultra-low at 0.77% and permeability at 0.26 × 10−3 μm2
A TOC threshold of 1.5% is established for sweet spot identification

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Implication

Reveals the synergistic controls of lithofacies, mineralogy, and organic matter on sweet spot distribution in shale gas reservoirs, indicating implications for resource optimization.

Cite This Study

Wang et al. (2026) studied this question.

synapsesocial.com/papers/69abc1e85af8044f7a4eaf1e https://doi.org/10.3390/geosciences16030107

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Implication

Reveals the synergistic controls of lithofacies, mineralogy, and organic matter on sweet spot distribution in shale gas reservoirs, indicating implications for resource optimization.

Synergetic Controls of Lithofacies, Mineralogy, and Organic Matter on Sweet Spot Distribution in Shale Gas Reservoir: A Case Study from Permian Shanxi Formation, Eastern Ordos Basin

Key Points

Discussion

Implication

Cite This Study

Synergetic Controls of Lithofacies, Mineralogy, and Organic Matter on Sweet Spot Distribution in Shale Gas Reservoir: A Case Study from Permian Shanxi Formation, Eastern Ordos Basin

Key Points

Discussion

Implication

Cite This Study

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