渤海湾盆地沧东凹陷古近纪孔三段沉积时期物源体系分析  

Provenance System Analysis of Sedimentary Period of Third Member of Kongdian Formation in Paleogene in Cangdong Depression of Bohai Bay Basin

作　　者：聂舟 李勇[2] 王锦程[3] 段润梅[3] 郑斯赫 NIE Zhou;LI Yong;WANG Jincheng;DUAN Runmei;ZHEN Sihe(College of Earth Sciences,Chengdu University of Technology,Chengdu 610059,Sichuan;State Key Laboratory of Geohazard Prevention and Geoenvironment Protection,Chengdu University of Technology,Chengdu 610059,Sichuan;Research Institute of Exploration and Development,Dagang Oilfield Company,Petro China,Tianjin 300280)

机构地区：[1]成都理工大学沉积地质研究院,四川成都610059 [2]成都理工大学油气藏地质及开发工程国家重点实验室,四川成都610059 [3]大港油田公司勘探开发研究院,天津300280

出　　处：《四川师范大学学报（自然科学版）》2018年第6期834-839,共6页Journal of Sichuan Normal University（Natural Science）

基　　金：国家自然科学基金(41372114);四川省科技计划项目(2017JY0140);油气藏地质及开发工程国家重点实验室开放基金(PLC201604)

摘　　要：采用重力异常法与古地貌分析法、砂岩骨架成分分析法、重矿物分析法、地震属性分析法、砂体分散体系分析法,对沧东凹陷孔三段主体沉积区物源体系进行综合分析.根据重力异常与古地貌分析,初步标定孔三段主体沉积区6个物源口;根据砂岩骨架成分分析和重矿物特征分析,标定4个物源体系;结合地震属性和砂体分散体系分析,确定了孔三段主体沉积区的6个物源体系及其空间分布范围;并根据地震属性特征和古地貌特征,对孔三段主体沉积区内无井资料地区的砂体规模和空间展布进行了预测,对今后的勘探具有重要意义.In this study,gravitational anomaly analytics,paleogeomorphic analytics,sandstone matrix components analytics,heavy minerals analytics,seismic property analytics and sandstone body dispersion system analytics have been used to comprehensively analyze the provenance system of the main sedimentary zone of the Third Member of Kongdian Formation in Cangdong depression.According to the analysis of the gravitational anomaly and paleogeomorphy,six sources for provenance have been primarily calibrated in the main sedimentary zone of the Third Member of Kongdian Formation;and four provenance systems have been calibrated according to the analysis of sandstone matrix components and heavy minerals characteristics;finally,six provenance systems and their spatial distribution have been identified based on the analysis of seismic property and sandstone body dispersion system;furthermore,in the light of seismic property and paleogemorphy features,this study has predicted the sand body scale and its spatial distribution of the main sedimentary zone where no well has been drilled of the Third Member of Kongdian Formation,which will have significant guidance for future exploration.

关 键 词：沧东凹陷 物源分析 孔三段 古近纪 

分 类 号：P5[天文地球—地质学]