Genesis Mechanism and Characteristics of Submarine Channel: A Case Study of the First Member of Yinggehai Formation in Ledong Area of Yinggehai Basin
Tian Dongmei
Jiang Tao
Zhang Daojun
Zuo Qianmei
Sun Hui
He Xiaohu
Abstract：The submarine channel is one of the important targets for deep water hydrocarbon exploration as well as the key point for the investigation into source and sink.Based on the newly acquired 3D seismic data and 3 boreholes in the Ledong area of the Yinggehai basin,the sequence stratigraphic framework for the first member of the Yinggehai Formation is set up.The development of every fourth-order sequence is derived by the enough sediment supply and high frequency sea-level changes under stable tectonic setting.The submarine channels occur in lowstand systems of every fourth-order sequence,which can be classified into slope channel and axial channel.Furthermore,the evolution of submarine channels is described,such as flowing through the lower topography with a convergent system,being reworked by mass-transport deposits (MTDs) and diapirs.Controlled by the sediment supply,high-frequency sea-level fluctuation and regional tectonic activities,the number and scale of submarine channels gradually decrease.The recorded high frequency sea-level fluctuation by high sedimentary rate in Ledong area makes it possible to better understand the evolution and controlling factors of submarine channels,which facilitates future hydrocarbon exploration.
Keywords：submarine channelfourth-order sequenceYinggehai basinpetroleum geology
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：12( 130-141 )