Study on gas-water two-phase seepage law and flow characteristics of the matrix-fracture system in shale gas reservoirs.

ABSTRACT: As a clean energy source, shale gas plays a vital role in supporting China's strategic objectives of carbon peaking and carbon neutrality through its efficient development. Due to the low porosity, low permeability, complex pore structure, and strong heterogeneity of deep shale gas reservoirs, the gas-water two-phase seepage law and flow characteristics remain unclear. This study focuses on deep shale gas in the Western Chongqing block as the research subject. Through the gas-water displacement experiments combined with NMR techniques, the gas-water two-phase seepage laws and flow characteristics of the shale gas matrix-fracture system were revealed. The results show that: (1) In the water displacement gas experiment, formation water cannot break through the matrix-type sample, with its di

SUBMITTER: He S 

PROVIDER: S-EPMC12818680 | biostudies-literature | 2026

REPOSITORIES: biostudies-literature