Huff-N-Puff Gas Injection for Enhanced Condensate Recovery in Eagle Ford
- Authors
- Reza Ganjdanesh (The University of Texas at Austin) | Wei Yu (The University of Texas at Austin) | Mauricio Xavier Fiallos Torres (The University of Texas at Austin) | Kamy Sepehrnoori (The University of Texas at Austin) | Erich Kerr (EP Energy) | Raymond Ambrose (EP Energy)
- DOI
- https://doi.org/10.2118/195996-MS
- Document ID
- SPE-195996-MS
- Publisher
- Society of Petroleum Engineers
- Source
- SPE Annual Technical Conference and Exhibition, 30 September - 2 October, Calgary, Alberta, Canada
- Publication Date
- 2019
- Document Type
- Conference Paper
- Language
- English
- ISBN
- 978-1-61399-663-8
- Copyright
- 2019. Society of Petroleum Engineers
- Keywords
- Huff-n-puff, Eagle Ford, Unconventional EOR, Field Pilot Test, Condensate
- Downloads
- 35 in the last 30 days
- 273 since 2007
- Show more detail
- View rights & permissions
SPE Member Price: | USD 9.50 |
SPE Non-Member Price: | USD 28.00 |
As the pressure drops below dew point in an unconventional gas-condensate reservoir, the liquid drops out of gas phase and forms an oil phase in matrix and fracture. The volume of oil phase formed in the matrix mostly stays below the residual oil saturation, i.e., the oil will be trapped in matrix permanently if enhanced oil recovery techniques are not applied. The huff-n-puff process has been performed and shown the potential of improving the recovery from tight oil reservoirs. The objective of the study was to investigate the feasibility of huff-n-puff EOR in a gas condensate reservoir in Eagle Ford. The studied section of the field contains 13 horizontal producers. The wells have been producing for 4 to 8 years and the oil production rate of each well declined below 10 barrels per day.
Compositional reservoir simulation was used to predict the performance of enhanced oil recovery. A sector model was built for the area selected as the prospective candidate for gas injection. The embedded discrete fracture model (EDFM) was used for modeling the fractures. A Peng-Robinson equation-of-state model was prepared based on the early produced samples from the wells. The only available gas for injection was the produced gas from the surrounding producers. A thorough phase behavior analysis was conducted to understand the miscibility of the injected gas and the in-situ fluid.
The field production data was used to history match the sector model. The field data of the initial huff-n-puff cycles were incorporated into the history match to fine tune the model. The robust sector model was employed to forecast the performance of gas huff-n-puff in 4 infill wells for 5 years of EOR operation.
File Size | 1 MB | Number of Pages | 17 |
Alfarge, D., Wei, M., Bai, B., 2017. IOR Methods in Unconventional Reservoirs of North America: Comprehensive Review. Presented at the SPE Western Regional Meeting, Bakersfield, California, USA, 23 April. SPE-185640-MS. https://doi.org/10.2118/185640-MS
Alharthy, N., Teklu, T.W., Kazemi, H., Graves, R.M., Hawthorne, S.B., Braunberger, J., Kurtoglu, B., 2018. Enhanced Oil Recovery in Liquid-Rich Shale Reservoirs: Laboratory to Field. SPE Reserv. Eval. Eng. 21, 137–159. https://doi.org/10.2118/175034-PA
Atan, S., Ajayi, A., Honarpour, M., Turek, E., Dillenbeck, E., Mock, C., Ahmadi, M., Pereira, C., 2018. The Viability of Gas Injection EOR in Eagle Ford Shale Reservoirs. Presented at the SPE Annual Technical Conference and Exhibition, Dallas, Texas, USA, 24-26 September. SPE-191673-MS. https://doi.org/10.2118/191673-MS
Fiallos, M.X., Yu, W., Ganjdanesh, R., Kerr, E., Sepehrnoori, K., Miao, J., Ambrose, R., 2019. Modeling Interwell Interference Due to Complex Fracture Hits in Eagle Ford Using EDFM. Presented at the International Petroleum Technology Conference, Beijing, China, 26-28 March. IPTC-19468-MS. https://doi.org/10.2523/IPTC-19468-MS
Fiallos Torres, M.X., Yu, W., Ganjdanesh, R., Kerr, E., Sepehrnoori, K., Miao, J., Ambrose, R., 2019. Modeling Interwell Fracture Interference and Huff-N-Puff Pressure Containment in Eagle Ford Using EDFM. Presented at the SPE Oklahoma City Oil and Gas Symposium, Oklahoma City, Oklahoma, USA, 9-10 April. SPE-195240-MS. https://doi.org/10.2118/195240-MS
Ganjdanesh, R., Rezaveisi, M., Pope, G.A., Sepehrnoori, K., 2016. Treatment of Condensate and Water Blocks in Hydraulic-Fractured Shale-Gas/Condensate Reservoirs. SPE J. 21, 665–674. https://doi.org/10.2118/175145-PA
Hoffman, B.T., 2018. Huff-N-Puff Gas Injection Pilot Projects in the Eagle Ford. Presented at the SPE Canada Unconventional Resources Conference, Calgary, Alberta, Canada, 13-14 March. SPE-189816-MS. https://doi.org/10.2118/189816-MS
Jia, B., Tsau, J.-S., Barati, R., 2019. A Review of the Current Progress of CO2 Injection EOR and Carbon Storage in Shale Oil Reservoirs. Fuel 236, 404–427. https://doi.org/10.1016/j.fuel.2018.08.103
Jin, L., Hawthorne, S., Sorensen, J., Pekot, L., Bosshart, N., Gorecki, C., Steadman, E., Harju, J., 2017. Utilization of Produced Gas for Improved Oil Recovery and Reduced Emissions from the Bakken Formation. Presented at the SPE Health, Safety, Security, Environment, & Social Responsibility Conference - North America, New Orleans, Louisiana, USA, 18-20 April. SPE-184414-MS. https://doi.org/10.2118/184414-MS
Liu, W., Ganjdanesh, R., Varavei, A., Yu, W., Sepehrnoori, K., 2018. Numerical Modeling and Optimization of Condensate Banking Treatment in the Hydraulic-Fractured Shale Gas Condensate Reservoir. Presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, Houston, Texas, USA, 23-25 July. URTeC: 2902081. https://doi.org/10.15530/URTEC-2018-2902081
MacDonald, R.M., Geetan, S.I., Klemin, D., 2017. Dynamic Flow Behavior in Shales Described via Digital Rock Modeling Provides Insight into Gas Injection. Presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, Austin, Texas, USA, 24-26 July. URTeC: 2671283. https://doi.org/10.15530/URTEC-2017-2671283
McMillan, M.D., Nwachukwu, C.R., Rahnema, H., 2016. Geospatial Analysis of Compositional Variations across the Eagle Ford and Barnett Shale Plays. Presented at the SPE Annual Technical Conference and Exhibition, Dubai, UAE, 26-28 September. SPE-181702-MS. https://doi.org/10.2118/181702-MS
Moinfar, A., Varavei, A., Sepehrnoori, K., Johns, R.T., 2012. Development of a Novel and Computationally-Efficient Discrete-Fracture Model to Study IOR Processes in Naturally Fractured Reservoirs. Presented at the SPE Improved Oil Recovery Symposium, Tulsa, Oklahoma, USA, 14-18 April. SPE 154246. https://doi.org/10.2118/154246-MS
Orozco, D., Fragoso, A., Selvan, K., Aguilera, R., 2018. Eagle Ford Huff-and-Puff Gas Injection Pilot: Comparison of Reservoir Simulation, Material Balance and Real Performance of the Pilot Well. Presented at the SPE Annual Technical Conference and Exhibition, Dallas, Texas, 24-26 September. SPE-191575-MS. https://doi.org/10.2118/191575-MS
Pankaj, P., Mukisa, H., Solovyeva, I., Xue, H., 2018. Enhanced Oil Recovery in Eagle Ford: Opportunities Using Huff-n-Puff Technique in Unconventional Reservoirs. Presented at the SPE Liquids-Rich Basins Conference - North America, Midland, Texas, USA, 5-6 September. SPE-191780-MS. https://doi.org/10.2118/191780-MS
Sanaei, A., Abouie, A., Tagavifar, M., Sepehrnoori, K., 2018. Comprehensive Study of Gas Cycling in the Bakken Shale. Presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, Houston, Texas, USA, 23-25 July. URTeC: 2902940. https://doi.org/10.15530/URTEC-2018-2902940
Sheng, J.J., 2017. Critical review of field EOR projects in shale and tight reservoirs. J. Pet. Sci. Eng. 159, 654–665. https://doi.org/10.1016/j.petrol.2017.09.022
Sheng, J.J., 2015. Increase Liquid Oil Production by Huff-n-puff of Produced Gas in Shale Gas Condensate Reservoirs. J. Unconv. Oil Gas Resour. 11, 19–26. https://doi.org/10.1016/j.juogr.2015.04.004
Tian, Y., Ayers, W.B., McCain, W.D.J., 2013. The Eagle Ford Shale Play, South Texas: Regional Variations in Fluid Types, Hydrocarbon Production and Reservoir Properties. Presented at the International Petroleum Technology Conference, Beijing, China, 26-28 March. IPTC-16808-MS. https://doi.org/10.2523/IPTC-16808-MS
Todd, H.B., Evans, J.G., 2016. Improved Oil Recovery IOR Pilot Projects in the Bakken Formation. Presented at the SPE Low Perm Symposium, Denver, Colorado, USA, 5-6 May. SPE-180270-MS. https://doi.org/10.2118/180270-MS
Wang, L., Yu, W., 2019. Mechanistic Simulation Study of Gas Puff and Huff Process for Bakken Tight Oil Fractured Reservoir. Fuel 239, 1179–1193. https://doi.org/10.1016/j.fuel.2018.11.119
Wan, T., Mu, Z., 2018. The use of Numerical Simulation to Investigate the Enhanced Eagle Ford Shale Gas Condensate Well Recovery Using Cyclic CO2 Injection Method with Nano-pore Effect. Fuel 233, 123–132. https://doi.org/10.1016/j.fuel.2018.06.037
Xu, Y., Cavalcante Filho, J.S.A., Yu, W., Sepehrnoori, K., 2017. Discrete-Fracture Modeling of Complex Hydraulic-Fracture Geometries in Reservoir Simulators. SPE Reserv. Eval. Eng. 20, 403–422. https://doi.org/10.2118/183647-PA