Research and application of the formation pressure prediction method to complex regions in the junggar basin
准噶尔盆地复杂地区地层压力预测方法研究及应用

The character of formation pressure distribution in the Junggar Basin is complex. For a long time because it is not precise to predict formation pressure,there are many engineering accidents such as wall of a well losing steady state,blocking drill,wall of a well collapsing,drilling fluid leaking and so on. For reducing engineering complex problem,it is very important to predict formation pressure truly.Therefor ,we have developped interpreting methods for complex structure by correlative fault fold theory ,instructing velocity model by geologic structure modeling,computing interval velocity and true dips of every layer,and then computing formation pore pressure by Terzaghi theory in the Junggar Basin. The research result proves that the precision of formation pressure prediction is improved remarkably.