Geophysics and Geophysical Exploration (지구물리와물리탐사)

Korean Society of Earth and Exploration Geophysicists (한국지구물리·물리탐사학회)
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International developments in geological storage of $CO_2$

$CO_2$의 지질학적인 저장에 있어서의 국제적인 개발들

  • Published : 2006.02.28
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Abstract

Geological storage of captured $CO_2$ is a new way of reducing greenhouse gas emissions to protect the climate, but is based on the established technology associated with injection of fluids underground. The geological formations of interest for this technique include operational and depleted oil and gas fields, and deep saline aquifers. Prediction of storage performance will depend on models of the behaviour of $CO_2$ in geological formations; these need to be refined and verified, and methods of monitoring developed and proved. These needs can be met through monitored demonstration and research projects. Current commercial projects that are demonstrating $CO_2$ storage include Sleipner, Weyburn, ORC, and In Salah; research projects include West Pearl Queen, Nagaoka, and Frio. In this paper, some of the monitored injection projects are described. The reservoirs employed for storing $CO_2$, and the associated monitoring techniques, are briefly reviewed. It is argued that small-scale research projects, used to develop techniques and prove models, are complementary to the large-scale monitored injections that will establish the viability of this technique for mitigating climate change.

포획된 $CO_2$ 의 지질학적 저장은 기후 보호를 위한 온실가스 방출 감소의 새로운 방법이나, 유체의 땅속 주입과 관련된 기존의 확립된 기술에 근거하고 있다. 이 기술에 대해 관심있는 지층 구조는 현재 가행 중이거나 고갈된 석유, 가스층, 그리고 심부 염수 대수층이다. 저장 능력에 대한 예측은 지층구조내에서 $CO_2$의 거동 모델들에 의해 좌우되는데, 이들 모델들은 정제되고 입증될 필요가 있고 모니터링 방법들도 개발되고 증명될 필요가 있다. 이 필요성들은 모니터링 되어지는 시범이나 연구 프로젝트를 통해 충족될 수 있다. 현재 $CO_2$ 저장을 시범해 보이는 상업적 프로젝트에는 Sleipner, Weyburn, ORC, In Salah가 있으며, 연구 프로젝트로는 West Pearl Queen, Nagaoka, Frio가 있다. 이 논문에서는 모니터링 되는 주입 프로젝트들 중 몇 개에 대해 서술한다. $CO_2$ 저장에 사용되는 저류층들과 관련된 모니터링 기술들을 간단히 살펴본다. 모델들을 증명하고 기술들을 개발하기 위해 이용되는 작은 규모의 연구프로젝트들이 기후 변화 완화에 이 기술들의 실행 가능성을 확립하는 큰 규모의 모니터링되는 주입들에 유용한지에 대해서는 논란거리이다.

Keywords

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