Burial and thermal histories of the Yingshan Formation in Well GC-6, Gucheng Low Uplift

Abstract The burial and thermal histories of the Yingshan Formation in Well GC-6, Gucheng Low Uplift, were constructed in detail by using the PetroMod software. The results show that the Gucheng Low Uplift has experienced multiple stages of tectonic movement and the Hercynian movement had the most important impacts on the study area. The burial depth of the Yingshan Formation reached its maximum (>6300 m) in the Middle Devonian. The deep burial of strata and the high heat flow in the early times made the maturity of Yingshan Formation reached its maximum value of nearly 2.5%Ro in the Late Devonian and did not change anymore. The favorable paleo-structural background, good source-reservoir-seal assemblage and developments of deep strike-slip fractures made a high yield gas reservoir formed in the Yingshan Formation, Well GC-6.