盐家油田盐22块复杂砂砾岩储层表征  

Characterization of the Complex Glutenite Reservoir in Yan22 Block of Yanjia Oilfield

作　　者：董越 张翔宇[2] 侯加根[2] 邓强[2,3] 

机构地区：[1]中国地质大学(北京),北京100083 [2]中国石油大学(北京),北京102200 [3]振华石油控股有限公司,北京100045

出　　处：《特种油气藏》2018年第1期11-15,共5页Special Oil & Gas Reservoirs

基　　金：国家重点基础研究发展计划"973"项目"陆相致密油高效开发基础研究"(2015CB250901)

摘　　要：针对盐22块沙四上亚段复杂砂砾岩储层分布规律不清的问题,利用多概率函数最优融合岩石相建模的方法,讨论了砂砾岩储层在垂向和平面的分布规律。结果表明:盐22块砂砾岩储层在测井上可识别出3类岩石相,其中砂砾岩相储层性质最好,中粗砾岩相较差,而泥岩为非储层;沙四上亚段垂向存在正韵律,其中Ⅰ、Ⅱ、Ⅳ砂组优质储层发育较差;Ⅲ砂组储层性质最好,平面上发育4个规模较大、储层物性较好的砂砾岩相储集体,而在垂向上具有"整体厚、单层薄、横向短"的特点。该研究对于东营凹陷及类似复杂砂砾岩储层的表征具有一定指导意义。The optimal fusion of multi-probability function and lithofacies modeling is used to identify the distribution of complex glutenite reservoir in the upper member of Sha4 in Yan22 block and discuss its lateral and longitudinal distributions. Research indicates that 3 types of lithofacies can be identified through the glutenite reservoir logging data, includiug the high-quality glutenite reservoir, coarse conglomerate reservoir with medium-quality and mudstone as non-reservoir. There is a positive rhythm in the longitudinal direction of Sha4 upper member, where relatively low-quality reservoirs develop in the Ⅰ, Ⅱ and Ⅳ sandgroups. The Sandgroup Ⅲ with best reservoir quality includes 4 large-scale glutenite reservoirs, which are featured by ＂large integral thickness, small thickness of single layer, short lateral scale＂. This research could provide certain guidance to the characterization of glutenite reservoirs in Dongying Sag and other similar glutenite reservoirs.

关 键 词：盐22块 砂砾岩储层 岩石相 概率函数 最优融合 储层建模 

分 类 号：TE122[石油与天然气工程—油气勘探]