Impact of Paleoclimatic Variability on Shale Oil Enrichment in Deep to Semi-Deep Lacustrine Facies: A Case Study of the Second Member of the Funing Formation, Qintong Depression, Subei Basin, Eastern China.

ABSTRACT: Lacustrine depositional systems are more sensitive to climatic fluctuations than marine systems, producing significant stratigraphic and sedimentological heterogeneity that affects shale oil distribution. However, the mechanisms linking paleoclimatic variability to shale oil enrichment remain insufficiently constrained. This study investigates the coupling between hydrological variations, organic matter enrichment, and pore structure development under different climatic conditions in the Second Member of the Funing Formation from Well A1 in the Qintong Depression. Using a combination of total organic carbon (TOC) analysis, total sulfur (TS) analysis, X-ray diffraction (XRD), high-resolution geochemical profiling, field-emission scanning electron microscopy (FE-SEM), and helium porosimetry,

SUBMITTER: Tang S 

PROVIDER: S-EPMC12593966 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature