杨楼油田核三段储层孔隙恢复与孔隙演化测算

Restoration and evolution calculation of reservoir porosity in member H3 of Yanglou Oilfield

肖卫权 王克杰 张玉霞 张亚君 丁诚开

Xiao Weiquan Wang Kejie Zhang Yuxia Zhang Yajun Ding Chengkai

中国地质大学, 北京 100083; 中国石油化工股份有限公司河南油田分公司勘探开发研究院, 河南南阳 473132

China University of Geosciences, Beijing 100083; E & P Institute of Henan Oilfield Branch Company, SINOPEC, Nanyang 473132

杨楼油田核三段储层成岩阶段为早成岩阶段B亚期, 成岩作用主要有机械压实作用、胶结作用、溶蚀作用三种, 成岩作用阶段也是储层孔隙演化的过程。依据比尔德的孔隙恢复与演化测算方法, 建立杨楼油田孔隙演化模式, 对核三段Ⅳ油组至Ⅵ油组共十个小层进行了孔隙恢复定量计算, 其结果大多数与岩心分析值非常接近, 说明孔隙演化预测值基本上是可信的。该地区孔隙演化测算对指导杨楼油田储层评价具有较大参考意义。

Reservoirs in member H3 of Yanglou Oilfield is at the early diagenetic stage B subage period, the diagenesis of which can be divided into mechanical compaction, cementation and denudation. The period of diagenesis is also the evolution process of reservoir porosity. According to the method on reservoir restoration and evolution calculation of Beard, reservoir evolution pattern has been established and quantitative calculation of reservoir restoration from oil group Ⅳ to Ⅵ of member H3 has been carried out. The calculation result approximates to the value of core analysis, which indicates the predictive value of reservoir evolution is basically credible. Therefore, the evolution calculation of porosity has great directive value toward reservoir evaluation in Yanglou Oilfield.