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지하 퇴적층에 산재한 중질 비투멘은 비전통 에너지원의 일종이며, 이를 추출하는 방법으로 퇴적층에 생산정을 뚫어, 고온 고압의 증기를 주입함으로써 비투멘의 점성을 작게 하여 지상으로 회수하는 SAGD(steam assisted gravity drainage) 공법을 적용하고 있다. 이러한 SAGD 방식에 있어 고온 고압의 증기 생산에 드는 막대한 에너지를 절감하는 방법으로 탄화수소 용매를 함께 주입하는 ES-SAGD(expanding solvent - steam assisted gravity drainage) 방식의 생산공법이 주목받고 있다. 본 연구에서는 기존 SAGD 방식에 솔벤트를 주입하는 ES-SAGD 방식의 중앙처리시설 공정계통을 모델링하고, 생산용량 300배럴일 때 에너지 및 유틸리티, 운전비용 절감효과를 분석하였다. 기존 SAGD 방식 대비 ES-SAGD 방식의 경우에, 솔벤트 주입에 따라 증기 공급량과 제반 유틸리티 비용이 감소하고, 운전비용이 조건에 따라 약 22.4% 감소하는 것으로 평가되었다.
Bitumen scattered in the underground sedimentary layer is a kind of unconventional energy source. As a method of extracting it, a production well is drilled in the sedimentary layer, high-temperature and high-pressure steam is injected to reduce the viscosity of bitumen, and the SAGD method is applied. In this SAGD method, a production method of the ES-SAGD method in which a hydrocarbon solvent is injected together as a method for saving enormous energy required for high temperature and high pressure steam production is attracting attention. In this study, the process system of the central processing facility of the ES-SAGD method that injects solvent into the existing SAGD method was modeled, and energy, utility, and operating cost savings were analyzed in the case of a production capacity of 300 barrels. In the case of the ES-SAGD method compared to the existing SAGD method, it was evaluated that the amount of steam supply and various utility costs decreased according to the solvent injection, and the operating cost decreased by about 22.4% depending on the conditions.
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- Publisher :The Society of Convergence Knowledge
- Publisher(Ko) :융복합지식학회
- Journal Title :The Society of Convergence Knowledge Transactions
- Journal Title(Ko) :융복합지식학회논문지
- Volume : 10
- No :1
- Pages :13-21
- DOI :https://doi.org/10.22716/sckt.2022.10.1.002
The Society of Convergence Knowledge Transactions
