准噶尔盆地阜东斜坡区中上侏罗统储集层特征差异及控制因素分析  

Character Differences and Controlling Factors of Reservoirs in the Upper-Middle Jurassic Fudong Slope Area,Junggar Basin

作　　者：于景维 叶勇[2] 柳妮[3] 朱永才[2] 文华国[4] YU Jingwei1 , YE Yong2 , LIU Ni3 , ZHU Yongcai2 , WEN Huaguo4(1 Karama y Campus of China University of Petroleum, Karamay , Xinjiang , 834000; 2 CNPC Xinjiang Oil field Exploration and Development Research Institution, Karamay, Xinjiang, 834000; 3 Karama y Vocational ＆ Technical College, Karamay , Xinjiang , 834000; 4 Chengdu University of Technology, Chengdu, 61005)

机构地区：[1]中国石油大学(北京)克拉玛依校区,新疆克拉玛依834000 [2]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 [3]克拉玛依职业技术学院,新疆克拉玛依834000 [4]成都理工大学"油气藏地质及开发工程"国家重点实验室,成都610059

出　　处：《地质学报》2018年第5期1070-1080,共11页Acta Geologica Sinica

基　　金：中国石油大学(北京)克拉玛依校区人才引进项目(编号RCYJ2016B-01-010);新疆自治区青年基金(编号2016D01B012)资助成果

摘　　要：准噶尔盆地是中国西部地区最重要的含油气盆地之一,阜东斜坡区中上侏罗统头屯河组和齐古组是近期勘探重点。根据野外露头、钻井岩芯和分析化验资料,详细分析头屯河组和齐古组储集层特征差异,包括储集层岩矿特征和物性特征差异。岩矿特征中重点对碎屑、填隙物以及孔隙类型和结构特征进行对比分析,物性特征中重点对储集层类型进行研究,发现齐古组储集砂层储集质量总体上要好于头屯河组。通过综合分析,认为阜东斜坡区中上侏罗统储集层特征差异主要受构造、沉积相、异常压力和成岩作用复合控制,构造演化的差异是导致头屯河组和齐古组储集层特征差异的最关键因素,头屯河组物性最好储集层的微相类型为水下分流河道,齐古组物性最好储集层的微相类型为分流河道,异常压力对原生孔隙保存以及黏土矿物发育位置起到重要影响,成岩作用对于重点层位储集层物性好坏起到决定性作用,其中凝灰质的蚀变序列对于后期油气开发有重要参考价值。TheJunngar basin has been one of the most important petroliferous basins in western China.The Toutunhe and Qigu formations in the Upper-Middle Jurassic Fudong slope area are the recent key strata for exploration.Based on field outcrop,drilling cores and analysis test data,character differences of reservoirs in the Toutunhe and Qigu formations were studied in detail using petrolgic characteristics and physical properties differences of reservoirs.For the former,comparative study was performed on clastic,interstitial material,pore types and structural characteristics,and for the latter,reservoir type is the focus.The study shows that reservoir quality of the Qigu formation is better than that of Toutunhe formation.Comparative analysis indicates that the character differences of reservoirs of Upper-Middle Jurassic in study area are compositely controlled by tectonic,sedimentary facies,abnormal pressure and diagenesis,with tectonic evolution being the leading factor.The best microfacies responsible for good physical properties of the Toudunhe Formation is underwater distributary channel while the best that for the Qigu Formation is distributary channel.Abnormal pressures have important impact on preservation of primary pores and position of minerals development.Diagenesis plays a conclusive role in reservoir physical properties,with tuffaceous alteration sequence having important reference value for future exploration of oil and gas.

关 键 词：准噶尔盆地 阜东斜坡区 中上侏罗统 储集层特征 控制因素 

分 类 号：P618.13[天文地球—矿床学]