Research of reasonable well pattern by crossplot method in fracture type low permeability reservoir
HA Jun-da · China Mining Magazine · 2011
It is difficult to develop and dispose in the heterogeneous low-permeability reservoir in which abundant fractures exist because of high heterogeneity.The theory formula of well output,starting coefficient and the time scale of water free oil production period was developed in five spot pattern that was usually used in fracture type low-permeability reservoir through application streamline law.Then the chart was established according to the theory formula.The method that the theory charts and crossplot were combined can be used to research the justified starting coefficient and the time scale of water free oil production period,and a reasonable well and well space can be calculated.It is significant to develop reasonably in fracture type low-permeability reservoir.