中高渗透油藏特高含水期开采规律

Development law for mid high permeability reservoir in super high water cut stage.

对胜利油区已处于特高含水阶段的中高渗透、中高粘度油藏的开采规律进行了研究。可采储量采出程度达８０％后，单井日产液、采液速度降低。综合含水达９０％后，油井开井数降低。特高含水井关井是导致油井开井数降低的主要原因。特高含水阶段约能采出可采储量的１／３。随可采储量采出程度的增加，单井日产油、采油速度和含水上升率均降低。研究得出的定量关系式、趋势分析规律对特高含水期油田开发指标的预测具有一定指导作用，已应用于油区及主要油田“九五”开发规划的编制。

This paper researched the super high water cut stage development law for mid high permeability and mid high viscosity reservoirs in Shengli oilfield. When the recovery of recoverable reserve is more than 80%, the single well fluid productivity rate will decline, the number of active wells will reduce as the composite water cut is more than 90%. Oil production in super high water cut stage is about one third of that of recoverable reserve. With the recovery increasing, the single well productivity rate and water raising rate will decline. The quantitative relationship and tendency analysis have some guiding signification for the development target prediction of super high water cut stage oilfield. They have been applied to oilfields and their “Ninth Five Year” state development plan formulating and proved to be correct in field testing