摘要
利用露头、岩心、测井及分析化验资料,对包界地区须家河组进行了高分辨率层序地层学的划分与对比,建立了须家河组二段层序地层格架。在此基础上进行了沉积相、构造特征、储集层特征、成岩特征、烃源岩及盖层特征等全面研究。提出了利用沉积相、储集层孔隙度、渗透率、有效厚度、储集层类型等参数进行有效叠合预测有利含气区的方法。包界地区须家河组二段共有5个有利的含气区带,高产区带主要分布在构造变形较大、沉积物粒度较粗、孔渗较好的水下分流河道沉积微相中,储集层类型多为Ⅱ类及以上储集层。
This paper presents the classification and correlation of the Xujiahe formation of Upper Triassic in Baojie by means of high- resolution stratigraphy using overwhelming drilled cores, well logs and other analytical data, integrated with the observation and description in surrounding field outcrops, and develops the sequence stratigraphic framework of 2~ member of Xujiahe formation, including in-depth studies of characteristics of its sedimentary facies, structure, reservoir, diagenesis, source rock and cap rock. The parameters such as the sedimentary facies, reservoir porosity, permeability, net pay thickness and reservoir type can be used for prediction of the zones through effective overlay technique. It is concluded that there exist five gas-bearing zones in this area, of which high capacity zones are distributed in the sedimentary microfacies of underwater distributary channel with large structural deformation, rough sediment grain-size and good porosity and permeability, and the reservoir types are dominated by Type Ⅰ and Type Ⅱ.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2010年第2期128-130,共3页
Xinjiang Petroleum Geology
基金
国家重大专项基金项目(2008ZX05000)
中国博士后基金项目(图201
中博基字[2006]17号20060400307)
关键词
四川盆地
包界地区
层序格架
沉积相
构造特征
储集层特征
有利含气区带
Baijie area
sequence stratigraphic framework
sedimentary facies
structural feature
reservoir quality
source rock
favorable gas-bearing zone
