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An Analysis of Pore Network of Drilling Core from Pohang Basin for Geological Storage of CO2

이산화탄소 지중저장을 위한 포항분지 시추코어의 공극구조 분석

  • Received : 2016.05.23
  • Accepted : 2016.06.09
  • Published : 2016.06.30

Abstract

In geological storage of $CO_2$, the behavior of $CO_2$ is influenced by pore network of rock. In this study, the drilling cores from Pohang Basin were analyzed quantitatively using three-dimensional images acquired by X-ray micro computed tomography. The porosities of sandstone specimens around 740 m-depth (T1), 780 m-depth (T2) and 810 m-depth (T3) which were target strata were 25.22%, 23.97%, 6.28%, respectively. Equivalent diameter, volume, area, local thickness of pores inside the sandstone specimens were analyzed. As a result, the microstructural properties of T1 and T2 specimens were more suitable for geological storage of $CO_2$ than those of T3 specimens. The result of the study can be used as input data of the site for decision of injection condition, flow simulation and so on.

Keywords

X-ray computed tomography;Micro-CT;CCS;Geological storage;Pore network

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Cited by

  1. Reaction in High Pressure Condition vol.26, pp.4, 2016, https://doi.org/10.7474/TUS.2016.26.4.293

Acknowledgement

Supported by : 한국에너지기술평가원(KETEP)