Characteristics of permeability in carbonate areas of Korea
Abstract
Permeability (hydraulic conductivity) in carbonate areas is affected by various factors such as fracture, pore and degree of weathering and diagenesis. Also, caves developed in carbonate area are main factors. This study was performed to understand factors controlling the permeability in carbonate areas in Korea. In order to conduct this study, the permeability and well logging data (n=30) were collected from many literatures and rock samples were collected around wells. Vertical profile of the carbonate areas can be classified into soil, weathered carbonate and fresh carbonate zone. They show a different range at each region. Most of the rock samples were hardly weathered. The permeability showed wide ranges (0.009 to 1.1 m/day). The average value of the permeability was 0.159 m/day. However, 80% (n=24) of total data had the permeability valves lower than 0.1 m/day. The permeability values were distinguished according to degree of development of fractures. The permeability showed low values (approximately <0.04 m/day) in hardly fractured carbonate area, intermediate values (approximately 0.04 to 0.5 m/day) in fractured carbonate area and high values (approximately >0.5 m/day) in highly fractured carbonate. These results mean that fractures are dominant factors controlling the permeability in carbonate areas of Korea than others. This work was supported by Energy Resource R&D program (2009T100200058) under the Ministry of Knowledge Economy, Republic of Korea.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2010
- Bibcode:
- 2010AGUFM.H23D1224P
- Keywords:
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- 1829 HYDROLOGY / Groundwater hydrology;
- 1859 HYDROLOGY / Rocks: physical properties;
- 5114 PHYSICAL PROPERTIES OF ROCKS / Permeability and porosity