肇州油田油井间歇性出水机理分析

An mechanism analysis of intermittent water production of oil wells in zhao zhou oilfield

在复杂断块油田的开发过程中,由于断层发育,砂体纵向上的叠置、变形,使得这类油田的油水关系十分复杂,造成油井生产过程出现一些非常规的出水现象。本文通过对肇州油田N 2井间歇性出水现象的研究,认为造成这种现象的原因是在同期沉积的两套砂体之间存在一个构造位置相对较低的小砂体,该小砂体在油气充注过程中成为局限小水体的封存空间。

During the complicated fault--block oilfield development, Because of fault development, overlapping and deformation of sand bodies in longitudinal direction make water--oil relationship compli- cated,and unconventional water production appears in oil recovery process . According to the study of in- termittent water production of well N2 ,this topic concluded as follow：there is a small sand body with a lower position of the structure between two sand bodies which are deposited in the same period, and the sand body is canned room of the small limited water volume in the process of the backfilling of oil and gas.