摘要
从常规物性特征及测井响应特征方面看,嘉二1亚段与嘉二2亚段具有类似的储层特征,都表现出了良好的储集性。嘉二段岩芯的核磁共振实验分析表明,嘉二1亚段与嘉二2亚段孔隙结构存在较大的差异。嘉二1亚段虽有较大的孔隙度,但孔隙空间主要被束缚流体所占据,利用岩芯的核磁共振实验资料可对储层的有效性进行评价。而由于嘉二2亚段孔隙空间主要被可动流体所占据,可采用喉道半径法来确定有效储层的下限值,以此为标准作为有效储层的判别依据。
Viewed from conventional physical property and well logging response,there is similar reservoir characteristic between T1j21 & T1j22,they are all good reservoirs.NMR analysis of the cores from T1j22 indicates that there are big difference in pore structure in T1j21 & T1j22.Although there is higher porosity in T1j21,the poor spaces are taken up by irreducible fluids.The NMR data can be used to evaluate the reservoir effectiveness.To T1j21,the pore spaces are mainly taken up by mobile fluids,the throat radius method can be used to determine the limit of effective reservoirs,and it can be used as criteria to assess effective reservoirs.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2009年第5期13-16,共4页
Journal of Southwest Petroleum University(Science & Technology Edition)
基金
国家863专项课题(2006AA06Z220)
关键词
储层特征
孔隙结构
储层有效性
核磁共振
喉道半径
reservoir characterization
pore structure
reservoir effectiveness
NMR
throat radius
