摘要
通过气源岩有机质丰度、类型,储层、盖层、生储盖组合和圈闭条件等的分析,认为保山盆地烃源岩有机碳含量较高、有机质类型主要为Ⅱ1,Ⅱ2和Ⅲ型,拥有利于生物气生成的母质;储集层多为高孔低渗储层,部分高孔中渗储层,总体孔隙结构不太好;盖层主要是物性与烃浓度复合封闭的盖层;其生储盖组合主要为自生自储的生储盖组合型式;圈闭多为构造-地层(岩性)复合圈闭。在此基础上提出了成藏模式。
Through studing the organic matter abundance and types of gas source rocks, reservoirs, covers, source-reservoir-cap assemblage, migration, trap factors and so on, the main conclusions obtained are as follows. The source rocks with high content of organic carbon in the Baoshan basin is favorable to biogeneic gas production. The total pore structure is not so good, more of the geological conditions are high porosity and low permeability, some are high porosity and middle permeability. The cover is mainly physical properties and hydrocarbon concentration composite confined reservoir. The source-reservoir-cap assemblage is mainly a self-generation and self-accumulation. The traps are mainly structural-stratigraphic combination traps. Therefore, based on the study, the paper proposes the accumulation model of biogenic gas.
出处
《成都理工大学学报（自然科学版）》
CAS
CSCD
北大核心
2009年第1期35-39,共5页
Journal of Chengdu University of Technology: Science & Technology Edition
关键词
云南保山
生物气
生储盖组合
圈闭
成藏模式
Baoshan basin
biogenic gas
source-reservoir-cap assemblage
trap
accumulation model
