A Case Study on Preservation Conditions and Influencing Factors of Shale Gas in the Lower Paleozoic Niutitang Formation, Western Hubei and Hunan, Middle Yangtze Region, China

<div>The distribution of Є<sub>1</sub>n shale’s pore-fracture structures in the well HY1: (a) 2461.9 m, organic matter nanopores, ×50000; (b) 2505.2 m, pores among clay particles and intergranular microfracture, ×20000; (c) 2547.8 m, interlayer microfracture, ×3000; (d) 2558.27 m, mould pores in organic matter surface, ×8500.</div>

Geofluids

fig6

Figure 6

Figure 6: A Case Study on Preservation Conditions and Influencing Factors of Shale Gas in the Lower Paleozoic Niutitang Formation, Western Hubei and Hunan, Middle Yangtze Region, China 

Figure 6 | A Case Study on Preservation Conditions and Influencing Factors of Shale Gas in the Lower Paleozoic Niutitang Formation, Western Hubei and Hunan, Middle Yangtze Region, China 