数值试井分析法在HG油田不稳定试井中的应用

Application of Element Analysis in Transient Well Testing in HG Oilfield

HG油田储层储集空间类型较多,主要为孔隙与裂缝及其组合,储集层的结构特征较复杂。在这种复杂的地质条件下,使得常规不稳定试井解释存在局限性。为此,采用了数值试井分析法进行不稳定试井解释。通过油气藏空间离散化,实现对油气藏内部不同区域储层渗流条件和流体渗流特征的精细刻画,通过对不同单元的描述,分析油气藏内部井间干扰,从而对目的井单元的分析更加全面、准确。

There are various types of reservoir bed in HG Oilfield,mainly are hole, spilt and their combination, the structural feature of reservoir bed is complex. So the conventional unstable WTA is limiting under this complex geological condition. Therefore,the finite element analysis was introduced. The porous conditions and porous characteristics in different zones were described with fine scale through the reservoir discretization. The well intervention between wells were analyzed though the description of different block so that the analysis for the block of target well were more accurate and comprehensive.