전통 석유 자원의 매장량이 감소함에 따라, 생산 난이도가 높은 비전통 석유자원의 개발이 확대되고 있다. 비전통

석유자원인 오일샌드 개발에서 ES-SAGD(Expanded Solvent-Steam Assisted Gravity Drainage) 공법 연구가 많아지고

있으며, ES-SAGD 공법의 에너지 효율 향상과 온실가스 저감이 중요한 과제로 대두되고 있다. 본 연구에서는 ESSAGD

CPF(Central Processing Facility) 공정을 대상으로 Aspen HYSYS를 이용한 공정 시뮬레이션을 수행했으며, 핀

치 분석(Pinch Analysis) 기법을 적용하여 열교환망(Heat Exchanger Network)의 에너지 최적화 가능성을 정량적으로

평가하였다. 분석 결과, 열교환기 최소 접근 온도 15℃ 기준으로 가열 유틸리티 6.7%, 냉각 유틸리티 42.6%를 절감할

수 있음을 확인했으며, 이를 통해 전체적으로 약 11.5%의 에너지 효율 개선이 가능함을 입증하였다. 또한, 이러한 열

교환망 최적화는 시간당 약 2,830 kg의 이산화탄소 배출 저감 효과를 기대할 수 있다. 본 연구의 결과는 향후 상업적

규모의 ES-SAGD 플랜트의 열교환망 설계 및 경제성 향상을 위한 중요한 기술적 지표로 활용될 수 있을 것이다.

As conventional petroleum reserves decline, the development of unconventional resources like oil sands, which require advanced extraction technologies, is steadily increasing. In the development of oil sands, an unconventional petroleum resource, research on the Expanded Solvent-Steam Assisted Gravity Drainage (ES-SAGD) process has been increasing; consequently, enhancing energy efficiency and reducing greenhouse gas emissions have emerged as critical challenges in this field. This study performed process simulations of the ES-SAGD Central Processing Facility (CPF) using Aspen HYSYS and quantitatively evaluated the energy optimization potential of the Heat Exchanger Network (HEN) via Pinch Analysis. The results indicated that at an Exchanger Minimum Approach Temperature (EMAT) of 15℃,

the heating and cooling utilities could be reduced by 6.7% and 42.6%, respectively, leading to an overall energy efficiency improvement of 11.5%. Furthermore, this optimization is estimated to reduce CO2 emissions by approximately 2,830 kg/h. These findings provide critical technical insights for the design of energy-efficient heat exchanger networks and the enhancement of economic viability in commercial-scale ES-SAGD plants.

Oilsands, ES-SAGD, Process modeling, Pinch analysis, Energy targeting

1. Unconventional Oil Ores Around the World: A Review (2021).
2. An Innovative In Situ Solvent Generation Enhanced SAGD
Technique (2024).
3. https://www.capp.ca/en/oil-natural-gas-you/oil-natural-gas-canada/
oil-sands/
4. Nasr, T., Beaulieu, G., Golbeck, H. and Heck, G., “Novel expanding
solvent-SAGD process (ES-SAGD),” Proceedings of the Canadian
International Petroleum Conference, Calgary, AB, Canada,
Jun. 11-13(2002).
5. Orr, B., “ES-SAGD: Past, Present and Future,” in Proceedings of
the SPE Annual Technical Conference and Exhibition, New Orleans,
LA, USA, 4–7 Oct. 2009, Paper SPE 129518-STU.
6. Amer, H., Sheng, K., Okuno, R., Al-Gawfi, A. and Nakutnyy, P.,
“A Systematic Comparison of Solvents and Their Concentrations
in Bitumen Gravity Drainage Under Controlled Thermodynamic
Conditions,” Fuel, 357, 129723(2024).
7. Jeong, M., Lee, H., Hwang, I. and Byun, H., “Economic Analysis
of Commercial Scale Central Processing Facility for ES-SAGD
Oilsand Plant,” Korean Chemical Engineering Research, 63(3),105127(2025).
8. Jeong, M., Lee, S., Shin, H., Cho, E., Hwang, I. and Kang, C.,
“Design and Assessment of An Oil-treatment Process for Bitumen
Separation,” The KSFM Journal of Fluid Machinery, 19(3),
5-9(2016).
9. Jeong, M., Rho, S., Kang, C. and Hwang, I., “Optimization of Heat
Exchanger Network in the Dehydration Process Using Utility Pinch
Analysis,” Korean Journal of Chemical Engineering, 37, 1565-
1572(2020).
10. Towler, G. and Sinnott, R. K., Chemical engineering design:
principles, practice and economics of plant and process design,
3rd ed., Butterworth-Heinemann, Oxford (2021).
11. Yaxian, Z., Yingjie, Z., Yi, H., Jiancheng, W., Weiren, B., Liping,
C., Lijuan, S. and Qun, Y., “Pinch Analysis for Heat Integration
of Pulverized Coke Chemical Looping Gasification Coupled with
Coke-oven Gas to Methanol and Ammonia,” Processes, 10(9),
1879(2022).