The variation of petrophysical parameters with pressure drawdown is better known, but the changing law of them with cycling, rising and declining of formation pressure is seldom researched.
The variation of petrophysical parameters with pressure drawdown is better known, but the changing law of them with cycling, rising and declining of formation pressure is seldom researched.
对于岩石物性参数随压力下降的变化规律已有统一认识，但对于地层压力循环升降过程中岩石物性参数的变化规律研究还较少。