萨北开发区井网加密后剩余油分布再认识

Recognition of residual oil distribution after well pattern thickening in Sabei Area

李艳军 焦艳丽

Li Yanjun Jiao Yanli

中国石油化工股份有限公司石油勘探开发研究院, 北京 100083; 大庆油田有限责任公司第三采油厂, 黑龙江大庆 163113

SINOPEC Exploration & Production Research Institute, Beijing 100083; No.3 Production Plant of Daqing Oil Field Co. Ltd., Daqing 163113

在北二西二类油层及三次加密新井完钻后, 通过补绘和完善89个单元沉积相带图, 结合动态分析、取心井资料和各类油层的水淹状况对储层砂体进行再认识, 描述各类砂体的平面几何形态、组合关系及连通状况。对比分析加密前后的砂体分布变化, 总结加密井网条件下各类砂体分布规律。综合分析剩余油分布特征, 针对砂体微相形态, 进行注采对应关系分析, 提出相应的调整措施建议, 对改善特高含水期油田开发效果具有重要的指导意义。

Through supplementing 89 sedimentary facies maps after finished Class Ⅱ oil reservoir and infill wells, combining with coring data and performance analysis, this paper gives us a brand new recognition of various sand bodies, including the description of lateral morphology and reservoir connectivity. Compared with sand body distribution before and after well pattern thickening, the rules of sand body distribution were summarized. On basis of analysis of injection-production relationship and characteristics of residual oil distribution, measures and advice that will play a significant role for improving field development were put forward.