A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
METHOD FOR IMPROVING CO_2 INJECTIVITY BY DECREASING IRREDUCIBLE WATER SATURATION NEAR WELLBORE IN UNDERGROUND STORAGE
According to the present invention, a method for improving the injectivity of an underground gas storage layer, comprises the steps of: injecting a reducing agent for lowering a residual water saturation level of a storage layer through an injection well, connected to a underground gas storage layer composed of water-permeable rock; and storing carbon dioxide by injecting the same in the storage layer after injecting the reducing agent. The method can improve the carbon dioxide injectivity of the storage layer by discharging water and a reducing agent which are filled in a cavity of the storage layer, with respect to the injection of carbon dioxide, and lowering a residual water saturation level around an injection well. In the present invention, as the reducing agent, a surfactant or a substance which can be miscible in both carbon dioxide and water can be used.
본 발명에 따른 지중 가스 저장층의 주입성 향상방법은 투수성 암질로 이루어진 지중의 가스 저장층까지 연결되어 있는 주입정을 통해 저장층의 잔류수포화도를 낮출 수 있는 저감제를 주입하는 단계와, 저감제 주입후 저장층에 이산화탄소를 주입하여 저장하는 단계를 포함하여 이루어지며, 이산화탄소를 주입함에 따라, 저장층의 공극을 채우고 있던 저감제와 물은 함께 배출되어 주입정 주변의 잔류수포화도가 낮아짐으로써 저장층의 이산화탄소 주입성이 향상된다. 본 발명에서 저감제는 계면활성제를 사용하거나 또는 이산화탄소와 물에 모두 혼합(miscible)될 수 있는 물질을 사용할 수 있다.
METHOD FOR IMPROVING CO_2 INJECTIVITY BY DECREASING IRREDUCIBLE WATER SATURATION NEAR WELLBORE IN UNDERGROUND STORAGE
According to the present invention, a method for improving the injectivity of an underground gas storage layer, comprises the steps of: injecting a reducing agent for lowering a residual water saturation level of a storage layer through an injection well, connected to a underground gas storage layer composed of water-permeable rock; and storing carbon dioxide by injecting the same in the storage layer after injecting the reducing agent. The method can improve the carbon dioxide injectivity of the storage layer by discharging water and a reducing agent which are filled in a cavity of the storage layer, with respect to the injection of carbon dioxide, and lowering a residual water saturation level around an injection well. In the present invention, as the reducing agent, a surfactant or a substance which can be miscible in both carbon dioxide and water can be used.
본 발명에 따른 지중 가스 저장층의 주입성 향상방법은 투수성 암질로 이루어진 지중의 가스 저장층까지 연결되어 있는 주입정을 통해 저장층의 잔류수포화도를 낮출 수 있는 저감제를 주입하는 단계와, 저감제 주입후 저장층에 이산화탄소를 주입하여 저장하는 단계를 포함하여 이루어지며, 이산화탄소를 주입함에 따라, 저장층의 공극을 채우고 있던 저감제와 물은 함께 배출되어 주입정 주변의 잔류수포화도가 낮아짐으로써 저장층의 이산화탄소 주입성이 향상된다. 본 발명에서 저감제는 계면활성제를 사용하거나 또는 이산화탄소와 물에 모두 혼합(miscible)될 수 있는 물질을 사용할 수 있다.
METHOD FOR IMPROVING CO_2 INJECTIVITY BY DECREASING IRREDUCIBLE WATER SATURATION NEAR WELLBORE IN UNDERGROUND STORAGE
주입정 주변의 잔류수포화도 저감을 통한 지중 가스 저장층의 주입성 향상방법
PARK YONG CHAN (author) / LEE TAE HUN (author) / PARK KWON GYU (author) / LEE SEUNG WOO (author)
2016-01-20
Patent
Electronic Resource
Korean
From Wellbore Instability and Grain Mixing to Injectivity Reduction
| Online Contents | 2019
From Wellbore Instability and Grain Mixing to Injectivity Reduction
| Online Contents | 2019
Breakthrough CO_2 adsorption in bio-based activated carbons
| Online Contents | 2015
METHOD FOR PROVIDING ZONAL ISOLATION IN AN UNDERGROUND WELLBORE
| European Patent Office | 2017
METHOD FOR PROVIDING ZONAL ISOLATION IN AN UNDERGROUND WELLBORE
| European Patent Office | 2019