摘要
为了研究羌塘盆地烃源岩的生烃潜力及其储集条件 ,在野外石油地质调查及室内综合研究的基础上 ,首次对羌南坳陷查郎拉地区储层的分布、岩石学特征、储集性能等方面进行了全面、系统的研究 .指出区内主要以碎屑岩储层为主 ,其次为碳酸盐岩 .碎屑岩岩石类型多为长石岩屑砂岩及岩屑砂岩 ,分布层位广、厚度大 ;碳酸盐岩发育相对差 ,厚度也普遍小 .岩性主要为各类颗粒灰岩 .储层露头样品物性、孔隙结构普遍差 ,属于非常规致密型储集层 .但露头样品并不能客观地反映地下储层的储集性能 ,尤其是羌塘盆地后期经历了多期强烈的构造活动 。
Based on field geology investigation and laboratory research, the distribution, petrologic characteristics and oil reservioring characteristics of the reservoir in the area are studied for the first time. It is pointed out that, clastic rock is main reservoir rock, it is of huge thickness and widespread distribution, and feldspathic litharenite and lithic arenite are main petrologic types; carbonate rock is secondary reservoir rock, it is of poor development and little thickness, and the petrologic type is mainly grain limestone. Outcrop samples show that the physical property of the reservoir is poor, its porosity and permeability are low, and the reservoir can be classed with unconventional tight formation. But the outcrop samples can't completely reflect the characteristics of underground reservoir. The basin underwent multiple serious deformations, which are favorable to improving the oil reservoiring characteristics of the underground reservoir.
出处
《西安石油学院学报（自然科学版）》
2001年第5期1-3,10,共4页
Journal of Xi'an Petroleum Institute（Natural Science Edition)
基金
国家重点基础研究发展规划项目 (G19980 40 1- 5 )
中国石油天然气集团公司青藏"九五"科技工程项目(QT96 YD- 4)资助
