水驱油田特高含水期油井变化评价指标体系

EVALUATION INDEX SYSTEM FOR OIL WELL OF WATERFLOODING OILFIELD IN ULTRA-HIGH WATER CUT STAGE

吉林油田已全面进入特高含水期开发阶段,动态分析时影响水驱油井变化的静态因素、生产因素、动态因素多,为了准确判断引起油井变化的原因,选取了影响油井变化的静动态评价指标,运用基于指数标度的层次分析和灰色关联分析相结合的主客观赋权法综合确定了水驱油井变化静动态评价指标的权重。结果表明,渗流阻力综合系数、孔隙度和沉积连通类型影响系数是油井变化的静态评价指标,产液、产油、含水率、流压是油井变化的动态评价指标,沉积连通类型影响系数和产油量这两项指标分别是油井变化评价指标中的主要指标。

Jilin oilfield has entered into the extra high water cut development stage,when analyzing dynamic there are a lot of static factors,production factors and dynamic factors that influence oil well change. only by the qualitative analysis,it is difficult to accurately judge the cause of oil well change,so as not to meet the urgent need of oilfield development. This paper selects the static and dynamic factors affecting the oil well change,the weight of static and dynamic influencing factors of the change of waterflooding wells are determined using the grey correlation analysis and the analytic hierarchy process based on exponential scale. The results show that the weight of static and dynamic factors of the oil well change determined that using this method is scientific and reasonable,which accords with the actual of oilfield,and provides a reliable basis for intelligent analysis of dynamic change of oil well.