摘要
渤中19-6大型凝析气田的发现是渤海湾盆地孔店组砂砾岩勘探的战略性突破。气田南块巨厚砂砾岩储层单井间产气差异大,因此开展储层分类研究对制定油田开发方案具有重要意义。影响本区产气能力的重要原因是孔隙结构差异,为此,结合常规岩心分析、铸体薄片和压汞资料,分析了孔店组砂砾岩储层的微观孔隙结构特征;利用核磁共振测井、常规电阻率测井建立了储层综合评价指标,结合测压资料将孔店组砂砾岩储层分为3类,并明确了不同类型储层间的综合指标界限,实现了各井的全井段分类。研究表明:储层综合评价指标与单井测试产能有较好的相关关系,单井产能主要由Ⅰ类储层提供,且渤中19-6气田孔店组砂砾岩储层上部品质较好、下部品质略差。
The discovery of Bozhong 19-6 large-scale gas field is a strategic breakthrough in the exploration of the Kongdian Formation glutenites in Bohai Bay Basin.The huge thick glutenites reservoir in the south of the gas field have large differences in gas production between single wells.Therefore,the reservoir classification research is of great significance to formulating oilfield development plans.The important reason that affects the gas production capacity of this area is the difference in pore structure.For this reason,combined with conventional core analysis,thin sections and mercury injection data,the microscopic pore structure characteristics of Kongdian Formation glutenites reservoir were analyzed,comprehensive evaluation indexes were established using nuclear magnetic resonance logging and conventional resistivity logging.The Kongdian Formation glutenites reservoir were divided into 3 types and the comprehensive index boundaries between different types of reservoirs were clarified combining pressure measurement data,realizing whole well classification of each well.The results show that the comprehensive index has a good correlation with single well test productivity,and the productivity is mainly provided by type I reservoir,and the upper part of the Kongdian Formation glutenites reservoir in the Bozhong 19-6 gas field is of good quality while the lower part is of slightly poor quality.
作者
杨兵
张占松
张超谟
YANG Bing;ZHANG Zhan-song;ZHANG Chao-mo(College of Geophysics and Oil Resources,Yangtze University,Wuhan 430100,China)
出处
《当代化工》
CAS
2020年第12期2786-2790,2817,共6页
Contemporary Chemical Industry
基金
国家科技重大专项(项目编号:2017ZX05032003-005)
关键词
渤中19-6气田
砂砾岩
孔隙结构
储层分类
综合评价指标
Bozhong 19-6 gas field
Glutenites
Pore structure
Reservoir classification
Comprehensive evaluation index
