准噶尔盆地南缘上侏罗统喀拉扎组沉积储层研究进展  

Research progress on the sedimentary reservoirs of the Upper JurassicKaraza Formation on the southern margin of the Junggar Basin

作　　者：张昌民[1] 付文俊 冀东升 赵康 张祥辉 ZHANG Changmin;FU Wenjun;JI Dongsheng;ZHAO Kang;ZHANG Xianghui(School of Geosciences,Yangtze University,Wuhan 430100,Hubei;Research Institute of Exploration and Development,Xinjiang Oilfield Branch,CNPC,Urumqi 830013,Xinjiang)

机构地区：[1]长江大学地球科学学院,湖北武汉430100 [2]中国石油新疆油田分公司勘探开发研究院,新疆乌鲁木齐830013

出　　处：《长江大学学报（自然科学版）》2023年第5期67-80,共14页Journal of Yangtze University(Natural Science Edition)

基　　金：国家自然科学基金项目“分支河流体系沉积模式与储层定量预测模型”(42130813)。

摘　　要：准噶尔盆地南缘上侏罗统喀拉扎组是准噶尔盆地油气勘探新的关注点。对准噶尔盆地南缘喀拉扎组的沉积储层研究现状进行了全面综述,把喀拉扎组的沉积储层研究划分为建组定名、地层学研究、沉积储层研究3个阶段,分析了喀拉扎组地层分布、物源、沉积相、沉积体系、沉积模式和储层特征等方面的研究现状。分析表明,喀拉扎组广泛分布在准噶尔盆地南缘广大地区,在头屯河地区沉积的喀拉扎组最厚,并向东西减薄,至四棵树地区逐渐尖灭;天山和博格达山构成喀拉扎组2大物源区,扎伊尔山物源影响到了四棵树凹陷南部地区;喀拉扎组沉积环境和沉积相研究还处于零星的局部描述阶段,需要开展地面地下对比,重建不同时期的沉积体系分布模式,现有的冲积扇和扇三角洲观点在一定程度上限制了沉积相模式研究的创新,建议采用分支河流体系的新概念建立新的沉积模式,对沉积体系规模及其分布进行定量化的预测;喀拉扎组以大套厚层砾岩和中粗砂岩为特征,储集空间主要为粒内溶孔、粒间溶孔、裂缝以及原生孔隙,属于中低孔、中低渗透储层,沉积相对储层物性具有明显的控制作用,受成岩作用影响显著,地震活动改善了喀拉扎组的储集层条件。该研究为准噶尔盆地南缘油气勘探研究提供了较全面的信息,为后续沉积储层研究指出了方向。The Upper Jurassic Karaza Formation on the southern margin of the Junggar Basin is a new focus of oil and gas exploration in the basin.A comprehensive review of the current status of sedimentary reservoir studies of the Karaza Formation on the southern margin of the Junggar Basin was presented,which divided the sedimentary reservoir studies of the Karaza Formation into three stages:stratigraphic nomenclature,stratigraphic research and sedimentary reservoir research,and analyzed the current status of research on stratigraphic distribution,provenance,sedimentary facies,sedimentary systems,sedimentation model and reservoir characteristics.It is concluded that the stratigraphy of the Karaza Formation is widely distributed in vast areas of the southern margin of the Junggar Basin,but the stratigraphic thickness and sedimentary facies vary in different areas.The stratum of Kalaza Formation deposited in Toutunhe area is the thickest and thins to the east and west,and gradually disappears in Sikeshu area;The Tianshan Mountains and Bogda Mountains constitute the two major source areas of the Karaza Formation,and the provenance of Zhayier Mountain affects the southern part of Sikeshu Depression;The study on sedimentary environment and sedimentary facies of the Karaza Formation is still at the stage of sporadic local description,and it is necessary to carry out surface-subsurface comparison and reconstruct the distribution pattern of sedimentary system in different periods.The existing view of alluvial fan and fan-delta have limited the innovation of sedimentary model to a certain extent,and it is suggested to adopt the new concept of the Distributive Fluvial System(DFS)to establish a new sedimentary model and make quantitative prediction of the scale of the sedimentary system and its distribution.The Karaza Formation is characterized by large sets of thick conglomerates and medium-coarse sandstones,and the reservoir space mainly includes solution pore,inter-grain solution pore,fracture and primary pore space,which belongs

关 键 词：准噶尔盆地南缘 喀拉扎组 沉积相 沉积模式 沉积储层 

分 类 号：TE12[石油与天然气工程—油气勘探]