准噶尔盆地车排子凸起石炭系火山岩储层特征及主控因素  

Carboniferous Volcanic Rock Reservoir Characteristics and Main Controlling Factors in Chepaizi Uplift,the Junggar Basin

作　　者：王千军[1] 任新成[1] 张曰静[1] 桂诗琦 罗群[2,3] WANG Qian-jun;REN Xin-cheng;ZHANG Yue-jing;GUI Shi-qi;LUO Qun(Research Institute of Exploration and Development,SINOPEC Shengli Oilfield Company,Dongying 257000,China;State Key Laboratory of Petroleum Resources and Prospecting,Beijing 102249,China;Institute of Unconventional Oil and Gas Science and Technology,China University of Petroleum,Beijing 102249,China)

机构地区：[1]中国石化胜利油田分公司勘探开发研究院,东营257000 [2]中国石油大学(北京)油气资源与探测国家重点实验室,北京102249 [3]中国石油大学(北京)非常规油气科学技术研究院,北京102249

出　　处：《科学技术与工程》2025年第6期2311-2323,共13页Science Technology and Engineering

摘　　要：为研究火山岩储层特征及主控因素,利用岩心观察、铸体薄片鉴定、物性测试以及测井资料分析对准噶尔盆地石炭系火山岩储层特征及分布、主控因素进行了研究。结果表明:车排子地区石炭系火山岩储层主要发育火山溢流相、爆发相,凝灰岩相和火山沉积相,岩性主要为安山岩、玄武岩、火山角砾岩、凝灰岩以及凝灰质砂岩;储集空间依据孔隙与裂缝的配置关系划分为连通孔隙型、裂缝型、裂缝-孔隙型以及孔-洞-缝型;受岩性岩相、风化淋滤作用以及构造作用影响,储集性能具有强非均质性,优势储层岩性为安山岩,火山角砾岩以及凝灰岩,石炭系顶部发育黏土层、水解层、风化淋滤层三层风化壳结构,极大地改善了储层物性,裂缝是储层发育的有效补充因素。区别于前人侧重于刻画火山岩优势储层特征,基于岩性岩相、风化淋滤、走滑断裂对储层的耦合控制作用,明确了研究区主要发育断壳体以及断缝体两种火山岩优势储层发育模式,研究结果对车排子地区石炭系油气资源由东向西开拓具有一定的指导意义。For the research on the characteristics and main controlling factors of volcanic rock reservoirs,core observation,casting thin section identification,physical property testing and logging data analysis were utilized to conduct the study on the characteristics,distribution and main controlling factors of the Carboniferous volcanic rock reservoirs in the Junggar Basin.The results show that in the Chepaizi uplift,the Carboniferous volcanic rock reservoirs mainly developed volcanic effusion facies,explosive facies,tuffaceous facies and volcanic sedimentary facies,and the lithologies are mainly andesite,basalt,volcanic breccia,tuff and tuffaceous sandstone.The reservoir spaces are classified into connected pore type,fracture type,fracture-pore type and pore-cavity-fracture type according to the configuration relationship between pores and fractures.Affected by lithology and lithofacies,weathering and leaching effects and tectonic actions,the reservoir properties have strong heterogeneity.The dominant reservoir lithologies are andesite,volcanic breccia and tuff.A three-layer weathering crust structure composed of clay layer,hydrolysis layer and weathering and leaching layer is developed at the top of the Carboniferous,which significantly improved the reservoir physical properties.Fractures are an effective supplementary factor for reservoir development.Different from the previous studies that mainly focused on characterizing the characteristics of the dominant volcanic rock reservoirs,based on the coupled controlling effects of lithology and lithofacies,weathering and leaching,and strike-slip faults on the reservoirs,it is innovatively recognized that two dominant volcanic rock reservoir development models,namely fault-block body and fault-fracture body,are mainly developed in the study area.The research results have certain guiding significance for the exploitation of the Carboniferous oil and gas resources from east to west in the Chepaizi uplift.

关 键 词：准噶尔盆地 火山岩储层 主控因素 风化淋滤作用 构造作用 

分 类 号：TE121[石油与天然气工程—油气勘探] P618.13[天文地球—矿床学]