苏东气藏地层压力与单位压降产气量分布特征分析

Distribution Characteristics of Formation Pressure and Gas Production Under Unit Pressure Drop in Sudong Gas Reservoir

苏东地区大多数井采用快速投产、井下节流等新工艺,利用常规的压力动态监测方法难以准确获取地层中部的压力。结合苏东气藏的实际情况,建立了新的地层压力评价方法,将表面套管压力转化为地层压力,应用于苏东气藏地层压力及单位压降产气量分布特征分析。

In Sudong area, new production practice such as the rapid production and downhole choke is applied in most wells. It is difficult to obtain the pressure in the middle of formation by using the conventional pressure behavior monitoring method. A new method of formation pressure evaluation is established based on the actual situation of the Sudong gas reservoirs by converting the surface casing pressure into the formation pressure to analyze the distribution characteristics of formation pressure and the gas production under unit pressure drop.