摘要
在复杂断块地区,断层封闭性的研究对于确定油气藏的分布有着极为重要的意义。以惠民凹陷临商断层的构造特征为基础,利用泥岩涂抹系数和断面正压力两种方法,分别定量研究了临商断层的侧向、垂向封闭性,并对其封闭性进行评价。结果表明,临商断层的封闭性在空间上存在着差异,其中侧向封闭性自西向东逐渐变好;垂向封闭性在较浅层位表现较差,随着埋深的增加其垂向封闭能力逐渐增强,并且,临商断层中部的垂向封闭性要好于西部和东部。总体上临商断层封闭性较好,有利于油气藏的保存。
In complex fault-block regions,it is important to study fault sealing performance to determine the distribution of reservoirs.Based on the tectonic features of Linshang faults in Huimin sag,and according to previous stu-dies,integrated with real geologic conditions,this paper uses evaluation methods of fault sealing ability,such as,mudstone smear factor,and normal pressure on fault plane.Taking these two key influential factors as appraisal parameters,quantitative study on lateral or vertical sealing of Linshang faults in contemporary is conducted,and a comprehensive evaluation of the vertical and lateral sealing capacities is made.It is shown that the sealing capacities of faults vary in space in Linshang faults.Lateral sealing of Linshang faults gradually changes from west to east for the better.Linshang faults develope poor capacity of vertical sealing in a relatively shallow stratum.As the depth increases,the capacity of vertical sealing gradually increased.Moreover,vertical sealing of Linshang faults is much better in the central areas than in the west and the east areas.In a whole,the sealing capacities of Linshang faults are good for conservation of reservoirs.
出处
《山东科技大学学报（自然科学版）》
CAS
2010年第2期20-25,共6页
Journal of Shandong University of Science and Technology(Natural Science)
基金
山东省自然科学基金项目(ZR2009EQ002)
关键词
临商断层
断层封闭性
惠民凹陷
构造特征
侧向封闭性
垂向封闭性
Linshang faults
fault sealing performance
Huimin sag
tectonic features
lateral sealing performance
vertical sealing performance
