摘要
为刻画储层沥青充填作用对储集物性的影响,以大庆长垣扶余油层储层沥青为研究对象,运用偏光显微镜、傅里叶红外光谱和包裹体分析等技术进行分析得出：砂岩中棕褐色、黑色至暗色不透明物质为储层沥青。储层沥青发育在长石岩屑砂岩和岩屑长石砂岩中,含量分布为1%~16%,产状主要为孔隙充填,其次为孔隙壁衬式,呈分散状或定向分布。储层沥青对储层孔隙度的影响为1%~42%,平均为7%,含量随距青一段底界距离增大而呈减小的趋势。储层沥青不仅使物性下降,同时也导致储层非均质性增强,是储层致密化控制因素之一。
In order to describe the effect of the filling of reservoir bitumen on reservoir physical properties,the authors take the reservoir bitumen in Fuyu oil layer reservoir as the research object. The characteristics of reservoir bitumen were analyzed through polarizing microscope,fourier infrared spectrum and inclusions. The results show that reservoir bitumen appears as brown,black and opaque dark materials in sandstone,and is developed with the content of 1% ~ 16% in feldspar lithic sandstone and lithic feldspar sandstone. The occurrence is pore filling and followed by the pore wall lining type,and distributed in disperse and oriented states. The influence of reservoir bitumen on reservoir porosity is 1% ~ 42%,with an average of 7%. With the increase of distance from the bottom of the 1stmember of Qingshankou Formation,the content of bitumen presents a trend of decrease. The existence of reservoir bitumen makes the physical properties of reservoir decreased and the reservoir heterogeneity enhanced.Thus,the reservoir bitumen is one of the important controlling factors for reservoir densification.
出处
《世界地质》
CAS
2015年第4期1079-1084,共6页
World Geology
基金
大庆油田有限责任公司勘探开发研究院技术开发项目(2012-JS--740)
国家科技重大专项(2011ZX05016-002)
吉林省科技发展计划重点项目(20110426)联合资助
关键词
大庆长垣
扶余油层
储层沥青
储层物性
Daqing Placanticline
Fuyu oil layer
reservoir bitumen
reservoir property
