摘要
龙门山北段推覆体构造带是指广元 -江油 -安县永安镇 ,呈NE -SW走向 ,隐伏断层前锋构造带的北西边界为马角坝断裂带 ,南东边界大致为龙门山前陆盆地北西侧的白垩系边界面 ,北东至广元射箭河一带。在该带里二叠系栖霞二段砂糖状白云岩储层的含油气前景日益显现出来。通过研究得出了几点认识 :(1)提出了一种新的、更能体现油气地质特征的龙门山推覆体构造带的划分方法。(2 )隐伏断层前锋构造带存在有丰富的烃源条件。 (3)二叠系栖霞二段砂糖状白云岩有良好的储集条件。(4 )运移聚集条件与之匹配好 ,并认为隐伏断层前锋构造带是油气勘探的有利区带。
The detachment structural belt in the north Longmen mountains lies on the area of Guangyuan-Jiangyou-Yongan town of Anxian and appears by NE-SW trend. The northwest boundary of the front structural belt of the buried faults is Majiaoba fracture belt. The southeast boundary almost is the interface of Cretaceous in the northwest side of the front-land basin of Longmen mountain. The northeast boundary reaches to Shijian river of Guangyuan. In the structural belt, the hydrocarbon potential appears more and more in the dolomite reservoir of Xixia section 2, Permian. The following results are gained by the study: (1) A new dividing method is proposed, which characterizes the geologic features of the detachment structural belt of Longmen mountain better; (2) There is rich hydrocarbon source in the front structural belt of buried faults; (3) The dolomite of Xixia section 2, Permian has good reservoir conditions; (4) The migration and accumulation conditions match the reservoir conditions very well. So, the front structural belt of buried faults is the prospective area for oil/gas exploration.
出处
《天然气勘探与开发》
2004年第3期7-10,共4页
Natural Gas Exploration and Development
基金
"龙门山北段推覆体下盘含油气条件评价研究"项目的部分研究成果
