摘要
比如盆地北部比如-那曲-索县地区碎屑岩储层发育于中下侏罗统希湖群、中上侏罗统拉贡塘组、下白垩统多尼组和上白垩统竞柱山组。通过储集物性和成岩作用等研究,认为比如盆地北部地区碎屑岩成岩作用较为强烈,多属于晚成岩期。储集空间类型以次生溶孔为主,孔隙结构主要为微-细孔微喉型。储层的物性主要受成岩作用、岩性和沉积相控制。竞柱山组物性较好,拉贡塘组次之,希湖群和多尼组的物性较差。
The clastic reservoirs in the Biru-Nagqu-Sog zone in northern Biru Basin, Xizang are developed Lower - Middle Jurassic Xihu Group, Middle - Upper Jurassic Lagongtang Formation, Lower Cretaceous Duoni Formation and Upper Cretaceous Jingzhushan Formation. These clastic rocks are now in the late diagenetic stage. The porosity types include secondary solution openings with micropores to microthroats. The reservoir quality is better in the Jingzhushan Formation, followed by the Lagongtang Formation, whereas worse in the Xihu Group and Duoni Formation.
出处
《沉积与特提斯地质》
CAS
CSCD
2009年第4期73-78,共6页
Sedimentary Geology and Tethyan Geology
基金
国土资源部全国油气资源战略选区调查项目(XQ2004-06)
国家自然科学基金项目(40672086)
中国石油化工股份有限公司"青藏特提斯活动古地理与油气远景:项目(T060007ZS15)
关键词
比如盆地
碎屑岩
储层
储层评价
Biru Basin
clastic rock
reservoir
reservoir assessment
