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| PubMed | |
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Article by Yao, S. Q. 1 |
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Article by Liu, Z. J. 1 |
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Article by 2 |
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Article by Chen, Y. C. 3 |
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Article by Jia, J. L. 1 |
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Article by Han, J. Y. 3 |
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Article by Miao, C. C. 1 |
ͭ�����������ϰ��ݵ���Ҫ��������λ����ϸ�о������ز㣬�����ڽ�һ���������ؽ��п�̽�Ϳ�������Ҫ���õ�������������ϵ������ϣ���ͭ����������˲�������ʶ�𣬲��״��ڱ����Բ����ڲ���ϵ�����������������ϸ�о���ͭ�����鶥������( T3��T5) Ϊ���������棬�ֱ����Ϊ�߽ǶȲ����Ϻ�“�ϳ��°�”�ķ�������; �ڲ���T3--1 Ϊ���Ϊ2 �������㼶( SQ1�� SQ2) ��T3--1 Ϊ�ֲ��������棬��Ҫ����Ϊ�ϳ�����ϵ���ڱ������ΰ��ϲ�����SQ2 �з������������״��ϳ��桢ĩ���ϳ���Ͷ������³����ΪLST��TST��HST ��RST���ڴ˻����Ϸ�����ͭ��������ڲ�����ṹ����Ϊ��������5 ����Ҫ����ṹ�����У����ҷ��䡢Ш״���䡢ǰ����������������ɽ( ½��) ǰ��������������������; ��ƽ�з��䡢��״��������dz��������������ƽԭ����; ƽ�з���λ����ص�ǵ���ģ��������������������
Tongbomiao Formation is an important horizon bearing oil and gas in Tanan Sag�� Studying thoroughly its sequence stratigraphy is beneficial for further exploration of the reservoir�� Using the seismic reflection characteristics combined with single well data��the sequence interfaces are recognized��and the seismic reflection characteristics of the internal system traces are studied for the first time�� The top and bottom interfaces of Tongbomiao Formation ( T3��T5) are regional unconformities and characterized by high angular unconformity with the " upside onlap and below denudation" reflection in feature�� The Tongbomiao Formation can be divided into two sequences in third order ( SQ1��SQ2) by T3--1��which is a local unconformity with the onlop reflection�� In the eastern sub-sag��system tracts are fully developed in the upper sequence ( SQ2) ��and can be divided into LST��TST�� HST and RST respectively by the first onlap interface��the last onlap interface and the downlap interface�� Based on the fact��the internal reflection structures of Tongbomiao Formation have been analyzed�� There mainly exist 5 kinds of reflection structures��named disorder-��foreset-��wedge-shaped-��parallel and sub-parallel or wavy-shaped reflections�� Among them��the first three reflections mainly appear on the front of mountains��representing the fan delta sediments��the sub-parallel or wavy-shaped reflection representing the shallow lake or fan delta plain sediments�� and the parallel reflection represents the semi-deep lake or deep lake sediments��