吉林大学学报(地球科学版) ›› 2018, Vol. 48 ›› Issue (5): 1342-1352.doi: 10.13278/j.cnki.jjuese.20170155
瞿雪姣1,2, 李继强1,2, 张吉3, 赵忠军3, 戚志林1,2, 罗超1,2
Qu Xuejiao1,2, Li Jiqiang1,2, Zhang Ji3, Zhao Zhongjun3, Qi Zhilin1,2, Luo Chao1,2
摘要: 针对现有辫状河储层构型单元定量表征方法关键参数获取困难且可靠性存疑的问题,以储层构型理论为指导,基于现代辫状河沉积、钻井岩心、录井和测井等资料,提出了基于单一辫状河道宽度的构型单元定量表征方法。首先,根据单井构型单元解释结果,确定同期辫状河道平面分布;其次,根据连井对比剖面,确定连井剖面内单一辫状河道间的界线位置;再次,根据现代辫状河单一辫状河道宽度与构型单元关系定量模型,限定辫状水道宽度、复合心滩长度及宽度等4级构型单元规模;最后,在单一辫状河道内确定4级构型单元平面分布,进而在密集井网区对复合心滩进行解剖,确定单个心滩位置和几何形态。采用该方法对苏××提高采收率试验区盒8下1-3单层辫状河致密砂岩气藏进行了分析,结果表明:该单层砂岩气藏发育5条单一辫状河道,其宽度为1 050~1 890 m;辫状水道宽度为234~435 m;复合心滩长度和宽度分别为1 931~3 569 m、685~1 242 m;单个心滩长度和宽度分别为660~1 880 m、310~1 030 m。
中图分类号:
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