多旋回复杂碳酸盐岩储层渗透率测井评价  

Logging evaluation of permeability of multicyclic carbonate rock reservoirs in the Middle Sichuan Basin

作　　者：刘宏[1] 吴兴波[1] 谭秀成[1] 周彦[1] 姚宴波[2] 唐青松[2] 周成刚[3] 

机构地区：[1]西南石油大学资源与环境学院,四川成都610500 [2]中国石油天然气股份有限公司西南油气田分公司川中油气矿,四川遂宁629000 [3]中国石油天然气集团公司东方地球物理公司研究院库尔勒分院,新疆库尔勒841001

出　　处：《石油与天然气地质》2010年第5期678-684,共7页Oil & Gas Geology

基　　金：中国石油天然气集团公司石油科技中青年创新基金项目(06E1018);四川省教育厅省级重点学科建设项目(SZD0414)

摘　　要：以四川盆地中部磨溪气田下三叠统嘉陵江组二段第二亚段多旋回碳酸盐岩为例,通过岩心观察,利用物性分析、压汞、铸体、扫描电镜等实验室分析资料,从储层微观孔喉结构及储层成因机理出发,提出地质约束条件下的渗透率测井评价方法。根据不同岩性及不同孔喉结构建立储层渗透率测井解释模型。实际应用效果表明,利用该方法所得到的渗透率与岩心分析数据相关性较好,其结果能准确表征非均质性极强的多旋回复杂碳酸盐岩储层渗透率,为储层评价提供可靠依据。Taking multicyelic carbonate reservoirs in the 2nd interval of the 2na member of the Lower Triassic Jialingjiang Formation in the Moxi gas field as an example, and from the perspective of microscopic pore-throat structure and reservoir genesis, this paper puts forward a geology-constrained logging evaluation method of per- meability based on experimental data such as core observation, physical property analysis, mercury penetration, cast and electron scanning microscope. Various logging interpretation models of permeability are set up according to different lithologies and pore-throat structures. Practical application shows that permeability obtained with this method correlates well with core analysis and can accurately characterize permeability of multicyclic carbonate reservoirs with great heterogeneity. This new method provides another reliable tool for reservoir evaluation.

关 键 词：孔-渗关系 渗透率模型 孔喉结构 嘉陵江组 碳酸盐岩储层 四川盆地中部 

分 类 号：TE121.3[石油与天然气工程—油气勘探]