隔夹层精细表征新方法研究——以LD油田为例

A NEW METHOD FOR FINE CHARACTERIZATION OF INTERLAYERS:TAKING LD OILFIELD AS AN EXAMPLE

为了明确底水稠油油藏隔夹层的成因、类型及展布特征,从而提升油田的开发效果。本文以LD油田为例,结合岩心、测井、录井和生产动态资料,从目的层沉积类型出发,明确了隔夹层分为三类,分别是泥质、钙质和物性3种,通过统计分析泥质隔夹层最为发育。其次,利用夹层频率和夹层密度2个参数以及隔夹层平面展布规律的研究,明确了隔夹层发育特征,利用更新的精细三维地质模型指导了油田提液措施的实施,并取得了较好的增产效果。

In order to improve the development effect of the oilfield, the cause, type and distribution characteris. tics of the interlayer in the heavy water reservoir in the bottom water are needed. Taking LD oilfield as an exam. ple, combined with core, logging, logging and production dynamic data, starting from the sedimentary type of tar. get layer, it is clear that the interlayer is divided into three categories, mud interlayer, calcareous interlayer and physical interlayer. Analysis of the mud interlayer is the most developed, using two parameters of interlayer fre. quency and interlayer density and the law of the distribution of the interlayer, the development characteristics of the interlayer are clarified, and the updated fine three-dimensional geological model is used to guide the implementation of oil extraction measures in the oilfield, and it has achieved good results, so as to increase oil production.