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分流河道油气藏的遮挡条件受到构造和储层变化的双重控制,隐蔽性强,滚动开发难度大。描述分流河道砂展布规律成为该类油气藏勘探的主要技术难点。在区域沉积体系研究基础上,运用电相解释图版、数学回归等方法对分流河道砂体进行定量-半定量描述;通过构造与分流河道砂体的匹配关系分析,确定分流河道油气藏的有利分布区域,从而形成了一套分流河道油气藏的滚动勘探开发技术流程。运用分流河道油藏的滚动勘探开发技术,在东营凹陷现河油区沙二段发现了一批分流河道油气藏,取得了良好应用效果和经济效益。
The obstructing conditions of the distributary channel reservoirs are controlled by the structural and reservoir changes. They have strong concealment and are difficult to roll and develop. Describing the distributary channel sand spreading law has become the main technical difficulty in the exploration of such reservoirs. Based on the study of regional sedimentary system, the quantitative and semi-quantitative description of distributary channel sand bodies was carried out by using electrographic interpretation maps and mathematical regression, and the favorable distribution of distributary channel reservoirs was determined through the analysis of the matching relationship between structure and distributary channel sand bodies Region, thus forming a set of distributary channel reservoirs rolling exploration and development technology process. Using the rolling exploration and development technology of distributary channel reservoirs, a number of distributary channel reservoirs have been discovered in the second member of Shahejie Formation in the Xianhe Oil Region, Dongying Depression, and have achieved good application effects and economic benefits.