[644] - Permeability prediction for low porosity rocks by mobile NMR

All available metadata of the dataset are listed below. Some features are available, e.g. download of dataset or additional description file.

Pape, H., Arnold, J., Pechnig, R., Clauser, C., Talnishnikh, E., Anferova, S., Blümich, B., 2009. Permeability prediction for low porosity rocks by mobile NMR. Pure and Applied Geophysics, 166, 1125 - 1163. DOI: 10.1007/s00024-009-0481-6.
Title(s):Main Title: Permeability prediction for low porosity rocks by mobile NMR
Description(s):Abstract: Estimating permeability from NMR well logs or mobile NMR core scanner data is an attractive method as the measurements can be performed directly in the formation or on fresh cores right after drilling. Furthermore, the method is fast and non-destructive. Compared to T 1 relaxation times, commonly measured T 2 distributions are influenced by external and internal magnetic field gradients. We performed two-dimensional T 1 and T2 relaxation experiments on samples of Rhaetian sandstone, a rock with low porosity and small pore radii, using a mobile NMR core scanner which operates within a nearly homogeneous static magnetic field. Because small pore sizes are associated with high internal magnetic field gradients, standard methods from NMR logging in the oil industry cannot be applied for accurate permeability prediction. Therefore, a new model theory was developed, which describes the pore radius dependence of the surface relaxivity ρ2 by both an analytical and a more practical empirical equation. Using corrected ρ2 values, permeability can be predicted accurately from the logarithmic mean of the T2 distribution and the physically based Kozeny-Carman equation. Additional core plug measurements of structural parameters such as porosity, permeability, specific inner surface area and pore radius distributions supported the NMR results.
Identifier(s):DOI: 10.1007/s00024-009-0481-6
Responsible Party
Creator(s):Author: Hansgeorg Pape
Author: Juliane Arnold
Author: Renate Pechnig
Author: Christoph Clauser
Author: Elena Talnishnikh
Author: S. Anferova
Author: Bernhard Blümich
Publisher:Birkhäuser Verlag
TR32 Topic:Other
Subject(s):CRC/TR32 Keywords: NMR, Permeability, Surface Relaxivity, Rock Physics
File Details
File Name:2009_Pape_PAG.pdf
Data Type:Text
Size(s):39 Pages
File Size:3901 kB (3.81 MB)
Date(s):Date Accepted: 2008-08-28
Issued: 2009-06-04
Mime Type:application/pdf
Data Format:PDF
Download Permission:OnlyTR32
General Access and Use Conditions:For internal use only
Access Limitations:For internal use only
Licence:TR32DB Data policy agreement
North:-no map data
Measurement Region:Laboratory
Measurement Location:--Laboratory--
Specific Informations - Publication
Article Type:Journal
Source:Pure and Applied Geophysics
Number Of Pages:39
Page Range:1125 - 1163
Metadata Details
Metadata Creator:Oliver Mohnke
Metadata Created:2013-12-02
Metadata Last Updated:2013-12-02
Funding Phase:1
Metadata Language:English
Metadata Version:V40
Dataset Metrics
Page Visits:393
Metadata Downloads:0
Dataset Downloads:0
Dataset Activity