二维趋势面分析在微幅度构造识别过程中的应用

Application of Two Dimensional Trend Surface Analysis in the Process of Recognizing the Tiny Structure

大庆市古龙油田葡萄花油层油水关系十分复杂,微幅度构造对剩余油的分布和油井的产能有更加明显的控制作用。应用二维趋势面分析的方法进行了微幅度构造识别,介绍其基本原理、数学模型和微幅构造图绘制原则。通过研究与分析,识别出微幅度构造160个,幅度差主要分布在1—4m,面积主要分布在0.05—0.2km^2,其中最大幅度33m、最小幅度1m,最大面积0.29km^2、最小面积0.02km^2,总面积22.84km^2。依据微幅度构造位置、沉积相等成藏主控因素在常家围子向斜设计有利目标井位1口,研究结果对古龙油田下一步的油气勘探及有利区的优选具有深远的指导作用。

The oil - water relationship was very complicated in PuLaohua oil layer of Gulong oilfield, the distribution of remaining oil and the pro- duction capacity of oil well were obviously controlled by micro amplitude structure. Applying the two dimensional trend surface analysis to recognize the tiny structure, which introduced the basic principles, the mathematical model and the tiny structure drawing principles. The results of the study, recognized 160 tiny structures, which maximum amplitude 33m, minimum amplitude i m, the largest area 0.29km2 , the smallest area 0.02km2 , the to- tal area 22.8km2 . Based on the controlling factors of hydrocarbon accumulation of micro amplitude structure and sedimentary facies in Changjiaweizi syncline designed favorable target 1 wells, for the next step of Gulong oilfield oil and gas exploration and favorable area optimization had a guiding role in the profound.