岩性油气藏 ›› 2018, Vol. 30 ›› Issue (4): 105112.doi: 10.12108/yxyqc.20180412
黄斌1, 许瑞1, 傅程1,2, 张威1, 史振中1
HUANG Bin1, XU Rui1, FU Cheng1,2, ZHANG Wei1, SHI Zhenzhong1
摘要: 为了正确识别并评价注采井间优势通道的发育情况,制定合适的调剖堵水措施,针对其识别过程的复杂性和模糊性,提出了基于层次分析法与模糊综合评价相结合的多层次模糊综合评价指标体系(AHP-FCE)。该评价指标体系包括3个评价对象子系统和25个评价指标,其中注采井间的连通性通过灰色关联度进行定量表征。将该模型应用于N油田S14层优势通道识别,建立了一级优势通道、次级优势通道、正常孔隙通道3种评价等级,利用熵权法确定各因素权重,选择半梯形隶属度函数计算隶属度矩阵,并根据最大隶属度原则对各注采方向进行了优势通道模糊综合评价。结果表明:共识别出一级优势通道16处、次级优势通道10处,高渗透层及注采关系不完善的井间优势通道发育明显;经过井间示踪剂法验证,识别准确率达87.5%。该方法合理准确,可为油田后期实施调剖堵水措施提供指导。
中图分类号:
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