松辽盆地北部泉三、四段异常高孔隙带预测  

Prediction of anomalously high porosity zones of K_1q_3 and K_1q_4 in northern Songliao Basin

作　　者：孟元林[1] 丁桂霞[1] 吴河勇[2] 姜文亚[3] 修洪文[2] 李亚光[2] 王又春[4] 王正伟 

机构地区：[1]东北石油大学地球科学学院,黑龙江大庆163318 [2]中国石油大庆油田勘探开发研究院,黑龙江大庆163712 [3]中国石油大港油田勘探开发研究院,天津300280 [4]大庆油田第五采油厂,黑龙江大庆163513 [5]大庆油田第八采油厂,黑龙江大庆166400

出　　处：《中国石油大学学报（自然科学版）》2011年第4期8-13,共6页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家自然科学基金项目(40872076)

摘　　要：松辽盆地北部泉三、四段发育3个异常高孔隙带,主要由有机酸溶蚀储层形成。为预测次生孔隙发育带的横向展布,应用成岩作用数值模拟技术,对松辽盆地北部泉三、四段成岩阶段和成岩相的展布进行研究,探讨影响次生孔隙发育的地质因素并对异常高孔隙带进行预测。结果表明:次生孔隙发育的储层主要形成于曲流河、三角洲平原和三角洲前缘砂体,目前处于中成岩阶段A1亚期,发育中期溶蚀成岩相;从盆地边部到中心,早期压实相、早期胶结相、早期溶蚀相、中期溶蚀相、晚期溶蚀相和晚期胶结相呈环带状展布,在纵向上相邻的成岩相,在横向上也相邻,可称之为'成岩相律';泉三段Sq3异常高孔隙带主要分布在中央坳陷周围的边缘地区。There exist three anomalously high porosity zones vertically in the K1q3 and K1q4 of northern Songliao Basin.The anomalously high porosity zones were formed mainly by dissolution.In order to predict the lateral distribution of secondary porosity zones,the distributions of diagenetic stages and diagenetic facies were studied by numerical modeling,the geofactors affecting the secondary porosity developing were discussed and the anomalously high porosity zones were predicted.The results show that the anomalously high porosity zones are dominantly formed in the sandstones of meandering river,delta plain and delta front in the middle diagenetic stage A1 period,and developed middle solution diagenetic facieses.From the basin edge to center,the early compaction facieses,early cementation facieses,early solution facieses,middle solution facieses,late solution facieses,late cementation facieses distributed in the ringlike pattern,and the diagenetic facieses adjacent to each other vertically are also neighboring laterally,which is called diagenetic law.The anomalously high porosity zones in the Sq3 are mainly located in the peripheral region of central depression of the basin.

关 键 词：次生孔隙 成岩作用 成岩相 沉积相 扶杨油层 松辽盆地 

分 类 号：TE122.2[石油与天然气工程—油气勘探]