摘要
核磁共振实验可以对储层流体进行有效性评价。通过核磁共振实验中对流体氢核NMR(核磁共振)信号的观测,可以直接对岩石孔隙中的流体进行定性测量,得到储层的有效孔隙度、渗透率、可动流体和束缚流体体积等与储层物性相关的有效地质信息。从核磁共振测试图谱可以看出:被测试的6块岩样的T2谱有较大的形态变化,且均有单双峰结构,表明该类储层孔隙类型较为复杂,伴随着渗透率增大,逐渐呈现出右峰,且左峰逐渐降低,右峰升高,说明岩样随渗透率增大,大孔隙所占比例逐渐增大。
Nuclear magnetic resonance(NMR)experiments can be used to evaluate effectively the reservoir fluids.The fluid hydrogen nuclear NMR signals which are directly observed by NMR experiments can be used for the qualitative measurement of the fluid in the pores of the rock to obtain the effective geological information such as porosity and permeability of reservoir as well as the movable fluid and irreducible fluid volume that are related with physical properties of reservoir.The NMR spectra indicate that the 6 tested samples of the T2 spectra have large morphological changes,and have a single-double peak structure representing the complex pore categories.With the increase of permeability,the right peak appears gradually,furthermore,the left peak decreases and the right peak increases,which indicates that the proportion of macropores increases with the increase of permeability.
作者
谢宝
Xie Bao(Department of Geology,Northwestern University,Xi’an 710069,China)
出处
《石化技术》
CAS
2018年第4期185-186,共2页
Petrochemical Industry Technology
关键词
核磁共振
储层流体
流体特征
孔隙类型
渗透率
nuclear magnetic resonance
reservoir fluid
fluid characteristics
pore type
permeability
