Ansai oil field in Ordos basin is a ultra low permeability reservoir with natural and inducedfractures, which caused serious lateral heterogeneity of permeability in the reservoir.
鄂尔多斯盆地安塞特低渗透油田由于存在天然裂缝或人工压裂裂缝，造成了储集层平面渗透率的方向非均质性。
2
An experimental procedure was designed to simulate the reservoir permeability (matrix, natural fractures and inducedfractures) reduction as a function of increasing effective stress.
一个实验过程设计模仿水库渗透矩阵，天然的东西是一个增加有效压力的功能断裂和引起破裂减少。
3
Various natural fractures are the objective reason of leakage in carbonate reservoir, while the tools vibration, stress release and inducedfractures are the external reasons of leakage.