火山岩储层质量预测方法探讨——以松辽盆地徐家围子断陷为例  

Study on volcanic reservoir quality prediction:A case study of Xujiaweizi fault depression,Songliao Basin

作　　者：肖丽华[1,2] 施立冬 王建伟[3] 孟元林[1] 田伟志 潘雪梅 刘文慧 胡安文[1] 李吉君[1] 

机构地区：[1]东北石油大学,黑龙江大庆163318 [2]油气藏形成机理与资源评价黑龙江省重点实验室,黑龙江大庆163318 [3]中国石油辽河油田勘探开发研究院,辽宁盘锦124010 [4]中国石油长城钻探工程分公司,辽宁盘锦124010 [5]中国石油大庆油田有限责任公司第四采油厂,黑龙江大庆163511

出　　处：《地质科学》2014年第4期1287-1301,共15页Chinese Journal of Geology(Scientia Geologica Sinica)

基　　金：国家自然科学基金项目(编号:U1262106;41002044);全国油气资源战略选区调查与评价国家专项(编号:2009GYXQ13);黑龙江研究生创新科研项目(编号:YJSCX2012-064HLJ)资助

摘　　要：松辽盆地徐家围子断陷深层火山岩储层具有埋藏深、温度高、压力大、物性差、非均质性强的特征。为了预测火山岩储层类型和质量在平面上的变化规律,本文讨论了影响火山岩储层物性的主要地质因素。结果表明,火山岩的物性主要受火山岩相(组)和所处对应碎屑岩成岩阶段的影响。距火山口越远的火山岩相组的火山岩储层,其孔隙度和渗透率越低。火山岩工业气层主要分布在晚成岩阶段A期以前的火山岩储层中。在晚成岩阶段B期,只有少量低产气层。本文充分考虑徐家围子断陷火山岩相和成岩作用对火山岩储层物性的影响与控制,应用成岩模拟软件,预测了成岩阶段的横向展布,通过叠合营三段火山岩相图和成岩阶段预测图,预测了火山岩储层的类型和质量,目前已发现工业气流的井主要分布在断陷中部的Ⅱ、Ⅲ类火山岩储层中。The volcanic reservoirs are deep-buried,high-temperature,high-pressure,low-porosity,low-permeability,and high-heterogeneity in the Xujiaweizi fault depression,Songliao Basin.In order to predict the volcanic reservoir types and quality transversally,the main controlling geological factors of the porosity and permeability of the volcanic reservoirs were discussed.As the results show,the physical properties of volcanic reservoirs are mainly controlled by the volcanic facies or volcanic facies group,and the diagenetic stages the volcanic reservoirs located in.The longer distances from the volcanic facies group to the volcanic vents are,the lower porosity and permeability of the volcanic reservoirs in the volcanic facies group are.Diagenesis has a dominant influence on the porosity and permeability of volcanic reservoirs,and most commercial gas reservoirs have been found in the diagenetic stages before period A of late diagenetic stage and a only few stripper wells are located in period B of late diagenetic stage.Taking the integrated influences of volcanic facies and diagenesis on the volcanic reservoir quality into consideration,predicting diagenetic stages by diagenetic numerical modeling software,and overlying the volcanic facies maps on the predicted diagenetic stage maps,the quality and types of volcanic reservoirs were predicted.As the well testing data show,current industrial gas wells are mainly developed in the reservoirs of type Ⅱ and type Ⅲ in the middle part of the depression.

关 键 词：火山岩 成岩作用 非常规油气 储层质量预测 徐家围子断陷 松辽盆地 

分 类 号：P588.1[天文地球—岩石学] P618.21[天文地球—地质学]