A Study on Mineralogical and Microbiological Clogging in Water Curtain System of Underground Hydrocarbon Storage Caverns - Calcite and Slime-Forming Bacteria

Hyung-Jun Park; Hyun-Cheol Kim; Seung-Hee Yang; Jong-Un Lee

doi:10.12972/ksmer.2017.54.1.011

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Research Paper

A Study on Mineralogical and Microbiological Clogging in Water Curtain System of Underground Hydrocarbon Storage Caverns - Calcite and Slime-Forming Bacteria 지하 유류비축기지 수장막 시스템의 광물학적 및 미생물학적 클로깅 연구 - 방해석과 점액생성균

28 February 2017. pp. 11-19

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Abstract

Mineralogical and microbiological clogging was investigated through experiments employing rock core columns for proper management of water curtain system in underground hydrocarbon storage caverns. Injection of the solution synthesized for calcite oversaturation resulted in precipitation of calcite on fracture surfaces and thus significant decrease in effluent volume through the columns over time. When the calcite clogging was treated with 0.1 N HCl, the effluent volume was recovered at 4 days. Microbiological clogging by slime-forming bacteria also led to fracture closure over time. Injection of 50 and 100 ppm of peroxyacetic acid as a bactericide to the bioclogging partly restored the effluent volume, however, the fracture was closed again over time. The result indicated that bactericide treatment might not be significantly effective for removal of sessile bacteria forming biofilms on fracture surfaces.

Keywords

Underground hydrocarbon storage

Water curtain system

Clogging

Calcite

Slime-forming bacteria

지하 유류비축기지 수장막 시스템의 효율적 운영을 위하여 암석 코어 컬럼을 이용한 실험을 통해 광물학적 및 미생물학적 클로깅 현상을 연구하였다. 인공 열극면에 인위적으로 조제한 방해석 형성 용액을 주입한 결과, 시간이 경과하며 침전된 방해석이 간극을 폐색하여 삼출수량이 감소하였다. 폐색된 열극면에 0.1 N 염산을 가한 결과 약 4일 경과 후 삼출수량이 회복되었다. 점액생성균에 의한 미생물학적 클로깅을 유도한 결과, 역시 시간이 경과하며 열극이 막혀 삼출수가 배출되지 않았다. 이미 형성된 바이오필름에 대한 살균제의 효과를 파악하기 위하여 과산화초산 50 및 100 ppm을 주입하자 일시적으로 삼출수량이 일부 증가한 경우가 관찰되었으나 시간이 경과하며 다시 폐색되었다. 이러한 결과는 열극면에 이미 고착한 점액생성균의 제거에 살균제 투여가 큰 효과가 없을 수도 있음을 의미한다.

키워드

지하 유류비축기지

수장막 시스템

클로깅

방해석

점액생성균

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Information

Publisher :The Korean Society of Mineral and Energy Resources Engineers
Publisher(Ko) :한국자원공학회
Journal Title :Journal of the Korean Society of Mineral and Energy Resources Engineers
Journal Title(Ko) :한국자원공학회지
Volume : 54
No :1
Pages :11-19
Received Date : 2016-12-23
Revised Date : 2017-02-03
Accepted Date : 2017-02-16
DOI :https://doi.org/10.12972/ksmer.2017.54.1.011

Journal of the Korean Society of Mineral and Energy Resources Engineers ISSN:2288-0291(Print) 2288-2790(Online) 한국자원공학회지

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