特种油气藏2023，Vol.30Issue(6)：107-113,7.DOI:10.3969/j.issn.1006-6535.2023.06.014
团簇效应对裂缝连通性的影响
Influence of the Cluster Effect on the Fracture Connectivity
摘要
Abstract
In response to the problem that it is necessary to fully consider the randomness and non-homogeneity of the fracture network layout due to the strong non-homogeneity and disordered and complex distribution of fractures of the fractured-vuggy reservoirs in Tahe Oilfield,the percolation theory was adopted to simplify the fracture net-work into a random and disordered system,and then the connectivity of fracture networks with the clustering behav-ior was investigated.The results show that as the fracture network transforms from isotropic to anisotropic,the con-nectivity increases and then decreases;the local clustering effect of the fracture network affects the percolation threshold,which decreases with the increase of the clustering effect,suggesting that the clustering effect can im-prove the local network connectivity but impair the overall connectivity.The method was applied in the development of Tahe unit A,and the unit recovery rate increased from 15.6％to 20.7％,and the new recoverable reserves were more than 42.1×104t by formulating programs such as well network construction,well network flow potential ad-justment,and oil displacement of well group through injection of nitrogen.This study is of great significance to the recovery enhancement of fractured-vuggy reservoirs in Tahe Oilfield.关键词
逾渗理论/分形理论/团簇效应/裂缝网络连通性Key words
percolation theory/fractal theory/clustering effect/fracture network connectivity分类
能源科技引用本文复制引用
袁飞宇,唐潮,张超,付亚飞,陈波..团簇效应对裂缝连通性的影响[J].特种油气藏,2023,30(6):107-113,7.基金项目
中国石化科研项目"岩溶系统描述及空间结构井网构建研究"(P20042-1) （P20042-1）
