基于岩性分类的火山岩储层流体识别方法——以克拉美丽气田石炭系火山岩为例  

Study on Fluid Identification Method of Volcanic Reservoir Based on Lithology Classification:A Case Study of Carboniferous Volcanic Rocks in Kelamei Gasfield

作　　者：张艺[1] 李道清[1] 仇鹏[1] 陈超[1] 郭巧珍[1] ZHANG Yi;LI Daoqing;QIU Peng;CHEN Chao;GUO Qiaozhen(Exploration and Development Research Institute,PetroChina Xinjiang Oilfield Company,Karamay,Xinjiang 834000,China)

机构地区：[1]中国石油新疆油田分公司勘探开发研究院,新疆克拉玛依834000

出　　处：《西安石油大学学报（自然科学版）》2020年第6期22-29,共8页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：国家重大专项“复杂气藏有效开发及稳产关键技术研究及应用”(2017E-0410)。

摘　　要：克拉美丽气田石炭系火山岩储层流体环境复杂,识别难度大。综合利用多种手段分岩类进行流体识别,突出不同流体的特征响应差异,以有效识别气水层。首先利用层次分解思路区分不同岩石类型,通过GR与RT/AC交会图版识别火山沉积岩和火山岩;再根据GR-RT交会图版,识别基性、中性、酸性火山岩及次火山岩。在岩性识别基础上,利用纵横波比值、常规测井交会图版及归一化气测法3种手段,建立了一套特殊测井、常规测井和地质录井相辅相成的火山岩储层气水识别方法。经试气验证,研究区53口探井、评价井解释符合率达90%。The Carboniferous volcanic rocks in Kelamei gasfield have complex fluid environment,and therefore the identification of fluids is difficult.In order to effectively identify gas and water layers,different types of fluid are identified by using various methods and the difference of characteristic response of different fluids is highlighted.Firstly,the hierarchical decomposition is used to distinguish different rock types and the volcanic sedimentary rocks and volcanic rocks are identified by establishing GR-RT/AC crossplot.Then,basic,neutral,acidic volcanic rocks and subvolcanic rocks are identified according to GR-RT crossplot.On the basis of lithology classification,a comprehensive gas and water identification method for volcanic reservoir based on special logging,conventional logging and geological logging was established by using vertical-to-horizontal wave ratio method,conventional logging crossplots and normalized gas measurement method.Gas testing results show that the interpretation coincidence rate of 53 exploration wells and evaluation wells in the study area reached to 90%.This comprehensive gas and water identification method for volcanic reservoir is of good application effect.

关 键 词：气水识别 纵横波比值法 归一化气测法 火山岩储层 克拉美丽气田 

分 类 号：TE122[石油与天然气工程—油气勘探]