台西盆地地层沉积特征与成烃-成藏地质条件

doi:10.11743/ogg20190115

Abstract

Abstract:

The Taixi Basin is a superimposed Mesozoic-Cenozoic basin located in the Taiwan Strait,with its main body lying between Taiwan Island and onshore Fujian.Large volume of hydrocarbon has been discovered in the eastern basin and Taiwan Island.Based on the previous studies,the study focused on stratigraphic distribution,sedimentary features and hydrocarbon generation potentials of the basin through fine interpretation of seismic data and marine-continental comparative analysis.The results show that evolution of the Mesozoic-Cenozoic basin could be subdivided into three stages,namely the Cretaceous-Eocene rift depression lacustrine stage,the Oligocene uplift denudation stageand the Miocene-present sedimentation and subsidence stage.Correspondingly,three sets of source rocks are developed in this basin including the Lower Cretaceous,Paleocene and Eocene source rocks.The reservoir types are mainly clastic rocks,such as lacustrine facies,delta,subaqueous fan and channel sands.Medium-sized oil-gas fields may develop in the study area due to its favorable geological conditions for hydrocarbon generation and accumulation,thus its hydrocarbon exploration potential is believed to be relatively high.

Key words: sedimentary characteristics, hydrocarbon generation and accumulation, potential for hydrocarbon exploration, Taixi Basin

CLC Number:

TE121

Zhang Li, Lei Zhenyu, Xu Hong, Shuai Qingwei, Luo Shuaibing, Qian Xing. Sedimentary features and geological conditions for hydrocarbon generation and accumulation in Taixi Basin[J]. Oil & Gas Geology, 2019, 40(1): 152-161.

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Sedimentary features and geological conditions for hydrocarbon generation and accumulation in Taixi Basin

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