Evaporation Process and Pore Size Distribution in Tight Sandstones: A Study using NMR and MICP
MetadataShow full item record
The phenomenon of evaporation is widely observed in a variety of processes and draws attentions from researchers. In the petrophysical study of sandstone, the knowledge of evaporation is necessary to understand the fluids distribution in the rock. Besides, evaporation method was used in the determination of irreducible saturation in lab and removing water blocking in gas well. In this study, Nuclear Magnetic Resonance (NMR) T2 distribution was used to determine the water distribution and migration during evaporation. Mercury Injection Capillary Pressure (MICP) was used to calibrate the T2 distribution produced by NMR. Based on the NMR data and MICP data, the absolute pore radius distribution was obtained and the whole evaporation process of tight sandstones can be divided into three stages. In the tight sandstone samples, the threshold pore radius for the initial evaporation is larger than 0.8 um.
This open access article is distributed under the Creative Commons license http://creativecommons.org/licenses/by-nc-nd/4.0/
Showing items related by title, author, creator and subject.
Preliminary study of improving reservoir quality of tight gas sands in the near wellbore region by microwave heatingWang, H.; Rezaee, M. Reza; Saeedi, A. (2016)The formation damages, such as water blocking and clay swelling, in tight gas reservoir have been recognized as severe problems impairing gas production. To remedy these damages, formation heat treatment (FHT) was taken ...
The High Temperature Effects on Pore Size Distribution of Tight Sandstone: An Application of Microwave Heating in Enhanced Gas Recovery (EGR)Wang, H.; Rezaee, M. Reza; Saeedi, Ali (2015)The present work studied the effects of microwave heating on sandstones with low porosity and permeability based on the comparison of pore size distribution (PSD) using Nuclear Magnetic Resonance (NMR) technique. ...
Implications of pore microgeometry heterogeneity for the movement and chemical reactivity of CO2 in carbonatesVialle, Stephanie; Dvorkin, J.; Mavko, G. (2013)We studied the heterogeneity of natural rocks with respect to their pore-size distribution, obtained from mercury-intrusion capillary pressure (MICP) tests, at a scale about one-fifth of the standard plug size (2.5 cm). ...