基于常规测井的火成岩岩性识别方法——以准噶尔盆地西北缘红车断裂带石炭系火成岩储层为例  

Lithologic identification of igneous rocks based on conventional log: a case study of Carboniferous igneous reservoir in Hongche Fault Zone in Northwestern Junggar Basin

作　　者：冯梓岩 殷文 钟云滔 于杰 赵磊[1,2] 冯程 FENG Ziyan;YIN Wen;ZHONG Yuntao;YU Jie;ZHAO Lei;FENG Cheng(School of Geophysics,China University of Petroleum(Beijing),Beijing 102200,China;School of Petroleum,China University of Petroleum(Beijing),Karamay,Xinjiang 834000,China;Institute of Experiment and Detection,Xinjiang Oilfield Company,PetroChina,Karamay,Xinjiang 834000,China)

机构地区：[1]中国石油大学(北京)地球物理学院,北京昌平102200 [2]中国石油大学(北京)克拉玛依校区石油学院,新疆克拉玛依834000 [3]中国石油新疆油田公司实验检测研究院,新疆克拉玛依834000

出　　处：《东北石油大学学报》2021年第5期95-108,I0007,I0008,共16页Journal of Northeast Petroleum University

基　　金：国家自然科学基金青年科学基金项目(42004089);新疆维吾尔自治区自然科学基金资助项目(2021D01E22);新疆维吾尔自治区自然科学基金项目(2020D01A141)。

摘　　要：石炭系火成岩储层是准噶尔盆地油气勘探开发的重要方向之一。以准噶尔盆地西北缘红车断裂带石炭系火成岩储层为主要研究对象,基于薄片鉴定、取心分析及测录井等资料,分析研究区的7种优势岩性及测井响应特征,采用多参数分布交会法,建立自然伽马—密度、中子孔隙度—密度和自然伽马—构建参数交会图版,预测优势岩性的平面分布。结果表明:研究区优势岩性为玄武岩、安山岩、火山角砾岩、凝灰岩、凝灰质砂砾岩、凝灰质细砂岩和沉凝灰岩;优势火成岩岩性具有局部发育的分布特征,以凝灰质为主的岩性(凝灰岩、凝灰质砂砾岩和凝灰质细砂岩)主要分布于研究区北部和主断层东侧,火山熔岩(玄武岩、安山岩)和火山角砾岩主要分布于研究区主断层西侧。多参数分步交会法可有效应用于研究区优势火成岩岩性识别,为利用常规测井资料有效识别火成岩岩性提供一种方法。The Carboniferous igneous reservoir is one of the important directions of oil and gas exploration and development in Junggar Basin.Take Carboniferous igneous reservoirs in Hongche Fault Zone in the northwestern margin of Junggar Basin as the research object.Seven dominant lithologies and corresponding log response characteristics were summarized and concluded based on thin section identification,coring analysis and log data.The crossplots of gamma-density,neutron void-density,and gamma-constructed parameter are established by using the multi-parameter sequential crossplots method.Furthermore,the plane distribution of the dominant lithology has been predicted.The results show that the dominant lithologies in the study area are basalt,andesite,volcanic breccia,tuff,tuffaceous glutenite,tuffaceous fine sandstone and tuffite.Advantages of igneous rock lithology in the study area has the distribution characteristics of local development,and tuffaceous lithologic(tuff,tuffaceous glutenite and tuffaceous fine sandstone)mainly distributed in the north and the east of the main fault in the study area.Volcanic lava and volcanic breccia are mainly distributed in the west side of the main faults in the study area.The multi-parameter sequential crossplots method can be effectively applied to the identification of dominant igneous rock lithology in the study area.The improved multiparameter sequential crossplots in this paper provides an approach for the accurate identification of igneous rocks by using conventional log.

关 键 词：准噶尔盆地 红车断裂带 火成岩储层 多参数分步交会 岩性识别 优势岩性分布 

分 类 号：TE121.1[石油与天然气工程—油气勘探]