靖安油田大路沟A区储层流动单元研究

Analyzing reservoir flow units in block A in Dalugou area of Jing'an oilfield

中国大多数油气田开发已进入高含水阶段。其油田开发效果一直是开发地质工作者关心的主要问题。以靖安油田大路沟A区油气田为例,利用岩芯、测井、录井、试油、生产动态等资料,采用流动分层指标(FZI)与地质综合研究相结合的方法,研究与划分了大路沟A区长212储层流动单元。结果表明,研究区长2_1~2可划分为Ⅰ、Ⅱ、Ⅲ、Ⅳ类储层流动单元,并以Ⅱ、Ⅲ类为主,其中Ⅰ类占12.2%,Ⅱ类占50%,Ⅲ类占33.3%。储层流动单元呈北东—南西向条带状分布。运用流动分层指标(FZI)与地质综合研究相结合法划分储层流动单元,结果可靠,为下一步油藏描述、剩余油分布预测、油田开发效果改善提供了可靠的地质依据。

The development of most of the oil and gas fields in China has come into high water cut stage.The oilfield development effect is still what the geologists are interested now.Taking block A in Dalugou area of Jing`an oilfield as an example,Chang 2_1~2 reservoir flow units in block A of Dalugou area were studied and divided by the new method of combining flowing zone indicator(FZI)with geological comprehensive research,with analyzing data of core drills,well logging,oil testing and production performance.The results indicate that reservoir of chang 2_1~2 is divided into four types of flow units(Ⅰ、Ⅱ、Ⅲ、Ⅳ)and mainly intoⅡ,Ⅲtype flow unit.TypeⅡaccount 50% meanwhile typeⅠand typeⅢrespectively account 12.2% and 33.3%.The distribution of reservoir flowing unit is a belt along NE-SW.The results of analyzing reservoir flow units by combining flowing zone indicator(FZI)with geological comprehensive research are veritably and reliably,provide dependable geological basis for reservoir description,prediction of remaining oil distribution and improvement of oil-gas field development.