摘要
通过天然气储层和盖层及其组合关系研究得到,徐家围子断陷主要存在K1yc1顶/K1yc1、K1d2/K1yc3和K1d2/K1yc43套储盖组合,K1yc1顶/K1yc1和K1d2/K1yc42套储盖组合主要分布在徐家围子断陷南部,K1d2/K1yc3储盖组合主要分布在徐家围子断陷北部.通过储盖组合与天然气分布之间关系研究得到,储盖组合对徐家围子断陷天然气富集具有3方面的控制作用:K1yc1顶/K1yc1和K1d2/K1yc3储盖组合岩性不同天然气富集程度不同;K1yc1/K1yc1储盖组合较K1d2/K1yc3储盖组合距沙河子组源岩近,天然气富集程度高;断陷南部与北部储盖组合不同,天然气富集程度不同.
By research on natural gas reservoir and cap rock and their assemblage relation,it was considered that there were mainly top of K1yc1/K1yc1,K1d2/K1yc3 and K1d2/K1yc4 3 sets of reservoir-seal assemblage in Xujiaweizi fault depression.The top of K1yc1/K1yc1 and K1d2/K1yc4 2 sets of reservoir-seal assemblage is mainly distributed in the south of Xujiaweizi fault depression,while K1d2/K1yc3 reservoir-seal assemblage are mainly distributed in the north of Xujiaweizi fault depression.By studies on relation between reservoir-seal assemblage and natural gas distribution,it was concluded that there were mainly 3 aspects of control effect of reservoir-seal assemblage on natural gas enrichment in Xujiaweizi fault depression.Lithology of K1yc1/K1yc1 and K1d2/K1yc3 reservoir-seal assemblage is different so that natural gas enrichment degree is different.The distance from K1sh to K1yc1/K1yc1 reservoir-seal assemblage is shorter than that from K1sh to K1d2/K1yc3 reservoir-seal assemblage,so that natural gas enrichment degree in K1yc1/K1yc1 reservoir-seal assemblage is higher.Reservoir-seal assemblage in south and north of fault depression is different so that natural gas enrichment degree is different.
出处
《大庆石油学院学报》
CAS
北大核心
2009年第4期5-8,18,共5页
Journal of Daqing Petroleum Institute
基金
黑龙江省教育厅科学技术研究项目(11531Z13)
关键词
徐家围子断陷
天然气
储盖组合
富集程度
沙河子组源岩
Xujiaweizi fault depression
natural gas
reservoir-seal assemblage
enrichment degree
K1sh source rock
