大庆石油地质与开发2017，Vol.36Issue(5)：76-80,5.DOI:10.19597/J.ISSN.1000-3754.201706063
方正断陷李家店次凹断裂特征及构造演化
FRACTURE CHARACTERISTICS AND TECTONIC EVOLUTION OF LIJIADIAN SUBSAG IN FANGZHENG FAULT DEPRESSION
摘要
Abstract
The previous studies on Fangzheng Fault Depression are mainly concerned on the 3D seismic-data-covered area,while the researches on 2D seismic-data-covered area are rather rare.Based on the 2D seismic-data-covered area of Lijiadian Subsag in the south of Fangzheng Fault Depression,the fracture characteristics of Lijiadian Subsag were analyzed.The results show that the fault profile features are mostly presented in Shape "y",flowerform,Shape step etc,and the characteristics of the fault plane combination show the inheritance variation;the subsag Cretaceous structures have experienced the following two evolutionary stages:the early rifting and basin formation stage and the middle and late returning and uplifting;and in Cenozoic era,the structures went through four evolutionary stages:subsided again for Xin'ancun-Wuyun and Dalianhe Formations,uplifted in the late Dalianhe deposition,steadily settled in Baoquanling Formation and strike-slipped and pulled-apart in Neogene.The researches have made up the limitation on the whole understandings about Fangzheng Fault Depression and furthermore possess the guiding significance for the next exploration of the oil and gas.关键词
构造演化/断裂特征/地层厚度/李家店次凹/方正断陷Key words
tectonic/structural evolution/fracture characteristic/formation thickness/Lijiadian Subsag/Fangzheng Fault Depression分类
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姜红..方正断陷李家店次凹断裂特征及构造演化[J].大庆石油地质与开发,2017,36(5):76-80,5.基金项目
中国石油天然气股份有限公司“十三五”重大科技专项“大庆油气持续有效发展关键技术研究与应用”(2017ZX03001-002). （2017ZX03001-002）
