%0 Journal Article
%T APPLICATIONS AND CHARACTERIZATION OF NMR RELATION DERIVED FROM SPHERE-CAPILLARY MODEL<br>球管孔隙模型的核磁共振（NMR）弛豫特征及应用
%A LIU Tang-Yan
%A XIAO Li-Zhi FU Rong-Shan WANG Zhong-Dong School of Earth
%A Space Sciences University of Science
%A Technology of China
%A Hefei
%A China School of Ocean
%A Earth Science
%A Tongji University
%A Shanghai
%A China School of Resource
%A Information Technology
%A University of Petroleum
%A Beijing
%A China Logging Company of Liaohe Oil Field
%A Panjin
%A China
%A <br>刘堂晏
%A 肖立志
%A 傅容珊
%A 王忠东
%J 地球物理学报
%D 2004
%I 
%X All pores in rock can be regarded as a system consisting of spherical pore and capillary pores. This paper presents a model of sphere-capillary. All pores are divided into different groups by their radii, and the relaxation time of each group can be calculated with the sphere-capillary model. The transversal relaxation time (T 2), spaced on the sphere-capillary model, can be utilized to conduct the inversion of NMR relaxation signal. Our research suggests that the T 2 distribution from the inversion is related with the special pore structure defined by the sphere-capillary model. Using different sphere-capillary models to derive different relaxation times, we conduct the inversion of relaxation signal with the relaxation time. When a T 2 distribution fits the relaxation signal in the least squares, the pore structure defined by the sphere-capillary model characterizes the pore system in rock best. Data from lab NMR measurements are analyzed with the sphere-capillary model, and the results are compared with the pressure data from mercury injection. The result shows that the sphere-capillary model describes properly the relaxation characteristic related with pore structure. Furthermore, the relaxation characteristic may be associated the with pore fluids.
%K NMR
%K Pore structure
%K Mercury injection
%K Sphere-capillary model
%K Relaxation
%K Petro-Geophy-
%K sics<br>核磁共振
%K 孔隙结构
%K 压汞分析
%K 球管模型
%K 弛豫
%K 岩石物理
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=1E44AE713D8A6DE0&jid=14DC41C59CBF6770055A7D610D53AE46&aid=A629C134A79C3914&yid=D0E58B75BFD8E51C&vid=F4B561950EE1D31A&iid=E158A972A605785F&sid=46FF101E7ECF9F15&eid=93661EC4C0CCEA67&journal_id=0001-5733&journal_name=地球物理学报&referenced_num=18&reference_num=18