摘要
川中侏罗系大安寨段为典型自生自储致密油藏,储层物性差,纵向裂缝较发育,单井产量受多因素综合控制,无法用常规油藏勘探开发思维及已有行业评定标准进行分析。通过对川中侏罗系大安寨段进行研究,结合《SYT6943–2013致密油地质评价方法》,运用层次分析法预测川中侏罗系大安寨段致密油甜点区,并和当前掌握的地质情况与开采情况对比。研究表明:使用层次分析法可将模糊定性的地质结论量化为科学权重,有效解决了因地质资料不足而造成的分析瓶颈,降低了勘探风险;但致密油属非常规油藏,与常规油藏差别大,评估时各参数并不是越高或者越低越好的线性关系,而是需要找出参数区间或者上下限;层次分析法需与行业标准结合运用才能提高运算精度。
Da'anzhai member of Jurassic in central Sichuan was a typical self-generating and self-preserving tight oil reservoir, with poor reservoir property and developed longitudinal cracks. As the single well production is affected by many factors, conventional reservoir exploration and development thoughts and the existing industry standards could not be used. Through the geological research on Da'anzhai member of Jurassic in central Sichuan, combining with the industry standard of SYT6943-2013 tight oil geological evaluation method, the feasibility of the analytic hierarchy process to predict the tight oil and sweet spot area is demonstrated, and the current geological conditions and production status were compared. The research results show that the use of AHP to quantify the fuzzy qualitative geological conclusions for the scientific weight, effectively solve the bottleneck analysis due to lack of geological data and reduce the exploration risk.While the dense oil belongs to unconventional reservoir, and there was big difference between the unconventional reservoir and conventional reservoir. In contrast to conventional reservoir, the parameters are not the higher or lower when the linear relationship is better, the parameter interval or upper and lower limit is needed to find out. The analytic hierarchy process should be combined with industry standard to improve the operation accuracy.
出处
《石油地质与工程》
CAS
2017年第5期101-105,共5页
Petroleum Geology and Engineering
关键词
川中侏罗系
大安寨段
甜点区
层次分析法
Jurassic in central Sichuan
Da'anzhai member
sweet spot area
analytic hierarchy process(ahp)
