关键词: 多重复合油藏, 低渗透油藏, 注水井, 试井分析, 压力

Abstract: Low-permeability reservoir often shows characteristics of multiple composite reservoirs because of the heterogeneity of lithologic development.These characteristics are difficult to be observed from oil well test data,but they could be reflected with the water well test data.The later curves of water injection well test data often upward.It is difficult to interpret these data. So,the study of well test analysis theory about heterogeneous reservoir is very important for low-permeability reservoir in complex geology.Thus,the theoretical models of multiple composite reservoir are presented and the corresponding typic curves are ploted,and the pressure transient characteristics are analyzed in this paper.Some analysis examples of oil and water well test are given to show the necessary for analyzing water injection well test data.

Key words: multiply composite reservoir, low-permeability reservoir, water injection well, well test analysis, pressure