Simulation and Sensitivity Analysis of Flare Gas Recovery for Application in Hydrocarbon Reservoirs as Injection Gas

Document Type : Original Article


1 M.Sc. Student, Department of Petroleum Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran

2 Assistant Professor, Department of Petroleum Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran



Flare gas recovery is one of the essential processes in reducing the greenhouse gas emissions caused in the oil and gas industry. On the other hand, due to the reduction of pressure and production rate of hydrocarbon reservoirs especially in Iran, it is necessary to provide solutions for reservoirs pressure maintenance. Therefore, in this paper the potential application of the separated carbon dioxide from the flare gas in Parsian refinery was investigated for injection into a gas condensate reservoir. For this purpose, the flare gas recovery process was simulated using Aspen HYSYS software and operational enhancements were applied. Next, the injection of the separated carbon dioxide into a gas condensate reservoir was simulated in Petrel software, and the best scenario was determined. The obtained results indicated that maximum CO2 recovery is achieved using Diisopropanolamine as solvent with the flow rate 1930 USGPM. The reservoir simulation results revealed that CO2 injection prevents severe pressure drop and causes the reservoir pressure to decline with a lower slope. Thus, the reservoir production rate increases and becomes more stable. The most stable production rate was attained for injection rate of 305 million cubic meters per day.


Main Subjects

Article Title [Persian]

شبیه‌سازی و آنالیز حساسیت بازیابی گاز مشعل جهت کاربرد در مخازن هیدروکربنی به‌عنوان گاز تزریقی

Authors [Persian]

  • محمد مهدی صباغیان 1
  • مستانه حاجی پور 2

1 کارشناس ارشد، گروه مهندسی نفت، دانشکده نفت و مهندسی شیمی، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران

2 استادیار، گروه مهندسی نفت، دانشکده نفت و مهندسی شیمی، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران

Abstract [Persian]

بازیابی گاز مشعل یکی از فرآیندهای ضروری در کاهش انتشار گازهای گلخانه‌ای در صنایع نفت و گاز است. از طرفی با توجه به کاهش فشار و میزان تولید مخازن هیدروکربنی به‌ویژه در ایران، ارائه راهکارهایی برای نگهداری فشار مخازن ضروری است، بنابراین در این مطالعه پتانسیل استفاده از دی‌اکسید کربن جدا شده از گاز فلر در پالایشگاه پارسیان برای تزریق به یک مخزن گاز میعانی بررسی شد. برای این منظور، فرآیند بازیابی گاز مشعل با استفاده از نرم‌افزار Aspen HYSYS شبیه‌سازی و بهبودهای عملیاتی اعمال شد. سپس تزریق گاز دی‌اکسید کربن جدا شده به یک مخزن گاز میعانی در نرم‌افزار Petrel شبیه‌سازی شده و بهترین سناریو تعیین شد. نتایج به دست آمده نشان داد که بیشترین بازیابی CO2 با استفاده از دی ایزوپروپانول آمین به‌عنوان حلال با دبی USGPM ۱۹۳۰ حاصل می‌شود. نتایج شبیه‌سازی مخزن نشان داد که تزریق CO2 از افت فشار شدید جلوگیری کرده و موجب می‌شود که فشار مخزن با شیب کمتری کاهش یابد، بنابراین، نرخ تولید مخزن افزایش یافته و پایدارتر خواهد بود. پایدارترین نرخ تولید از مخزن برای نرخ تزریق ۳۰۵ میلیون مترمکعب در روز به‌دست آمد.

Keywords [Persian]

  • گاز فلر
  • تزریق گاز
  • مخزن گاز میعانی
  • شبیه‌سازی
Adewale D., Ogunrinde J., (2010), “An Economic Approach to Gas Flare-Down in a Selected Field in Nigeria”, Annual International Conference and Exhibition, Nigeria.
Alcheikhhamdon Y., Hoorfar, M., (2016), “Natural gas quality enhancement: A review of the conventional treatment processes, and the industrial challenges facing emerging technologies”, Journal of Natural Gas Science & Engineering 34, 689-701.
Amer M.A., Ghazi S., Ali S., Zafar T., Riaz M., (2018), “Enhanced Gas Recovery by CO2 Injection Method in Depleted Gas Reservoirs”, Archives of Petroleum & Environmental Biotechnology, 144, 1-13.
Bauer M. and Köck M., Jörg k., Ramakrishnan C., Scheed A., (2012), “Flare-Gas Recovery in TunisiaFrom Liability to Value”, Oil and Gas Facilities, 44, 51-59.
Cao, C., Hou, Z., Li, Z., Pu, X., Liao, J., Wang, G., (2022), Numerical modeling for CO2 storage with impurities associated with enhanced gas recovery in depleted gas reservoirs. J. Nat. Gas Sci. Eng., 102, 104554.
Dai, S., Dong, Y., Wang, F., Xing, Z., Hu, P., Yang, F., (2022), “A sensitivity analysis of factors affecting in geologic CO2 storage in the Ordos Basin and its contribution to carbon neutrality”, China Geol. 5, 359–371.
Ding, J., Cao, T., Wu, J., (2019), “Experimental Investigation of Supercritical CO2 Injection for Enhanced Gas Recovery in Tight Gas Reservoir”, Carbon Management Technology Conference, USA.
Guo X., Feng J., Wang P., Kong B., Wang L., Dong X., Guo S., (2023), “Review on the Mechanism of CO2 Storage and Enhanced Gas Recovery in Carbonate Sour Gas Reservoir”, Processes 11, 164, 1-15.
Hamza A., Hussein I., Al-Marri M., Mahmoud M., Shawabkeh R., Aparicio S., (2021), “CO2 enhanced gas recovery and sequestration in depleted gas reservoirs: A review”, Journal of Petroleum Science and Engineering, 196, 107685.
Hasan M., Eliebid M., Mahmoud M., Elkatatny S., Shawabkeh R., (2017),” Enhanced Gas Recovery (EGR) Methods and Production Enhancement Techniques for Shale & Tight Gas Reservoirs, SPE Annual Technical Symposium and Exhibition, Saudi Arabia.
Hashemi Fard K., Shafiee M., 2020. Recovering Gas Flares from the 12th Gas Phase of the South Pars Gas Refinery. Advanced Journal of Chemistry, Section A 3(1), 49-57.
Iogna A., Guillet-Lhermite J., Wood C., Deflandre J.P., (2017), CO2 Storage and Enhanced Gas Recovery: Using Extended Black Oil Modelling to Simulate CO2 Injection on a North Sea Depleted Gas Field, 79th EAGE Conference and Exhibition, France.
Kalra S., Wu X., (2014), “CO2 Injection for Enhanced Gas Recovery”, SPE Western North American and Rocky Mountain Joint Meeting, USA.
Kazeruni, V., Farhadipour, A. Omidvar, P., (2013), How to recover gases sent to Flare in a gas and liquefied gas refinery based on the concept of exergy, First National Iranian Petroleum Conference, Kerman.
Khanipour, M. and Mirokili, A. and Ebrahimzadeh Sarvestani, M., (2016), Modeling and simulation of flare gas recovery to reduce greenhouse gas emissions to the environment and increase methanol production in mega methanol reactor, Petrochemical and Energy Seminar, Bushehr.
Saadawi H., (2013), “Ten Years’ Experience with Flare Gas Recovery Systems in Abu Dhabi”, Annual Technical Conference and Exhibition, USA.
Salu S., Soliman M., Ansari N.A., (2014), “Unconventional Flare Gas Recovery Systems (FGRS)”, SPE Technical Symposium and Exhibition, Saudi Arabia.
Vickers S., Bruce S., Hutton A., Nunzi P., (2012), “Protect and Then Inject: Optimized Well Fluids Successfully Drill Depleted Reservoirs to Store Gas”, SPE Drill & Compl 27 (01): 113–117.
Wallace, E.M. Ehlig, C.A. (2015), “Associated Shale Gas: From Flares to Rig Power”, SPE E&P Health, Safety, Security and Environmental Conference, USA.
Wang, H., Rezaee, R., (2020), “CO2 Storage with Enhanced Gas Recovery CS-EGR in Conventional and Unconventional Gas Reservoirs in Australia”, SPE Asia Pacific Oil & Gas Conference and Exhibition, Virtual.