CO2-Oil Interactions in Tight Rocks: An Experimental Study
- Ali Habibi (University of Alberta) | Mahmood Reza Yassin (University of Alberta) | Hassan Dehghanpour (University of Alberta) | Donald Bryan (Cenovus Energy)
- Document ID
- Society of Petroleum Engineers
- SPE Unconventional Resources Conference, 15-16 February, Calgary, Alberta, Canada
- Publication Date
- Document Type
- Conference Paper
- 2017. Society of Petroleum Engineers
- 5.7.2 Recovery Factors, 5.2.1 Phase Behavior and PVT Measurements, 5.5.2 Core Analysis, 4.3.3 Aspaltenes, 2.4 Hydraulic Fracturing, 5.2 Fluid Characterization, 2.5.2 Fracturing Materials (Fluids, Proppant), 1.6 Drilling Operations, 2 Well completion, 5 Reservoir Desciption & Dynamics, 5.7 Reserves Evaluation, 1.6.9 Coring, Fishing
- CO2 EOR, Tight Oil Production, Asphaltene Precipitation, CO2 Fracturing, Wettability Alteration
- 11 in the last 30 days
- 485 since 2007
- Show more detail
- View rights & permissions
|SPE Member Price:||USD 8.50|
|SPE Non-Member Price:||USD 25.00|
This paper presents comprehensive rock-fluid experiments to study the possibility of oil recovery improvement when CO2 is injected as a fracturing fluid in the Montney tight-oil play, located in the Western Canadian Sedimentary Basin. This study consists of four phases: In phase 1, we conduct constant composition expansion (CCE) tests with different CO2 concentrations using a PVT cell. In phase 2, we visualize CO2-oil interactions at reservoir pressure and temperature in a custom-designed visual cell. Then, we conduct SEM/EDS analysis on the solid precipitates in the visual cell due to CO2-oil interactions. In phase 3, we soak the oil-saturated core plugs in the visual cell, pressurize the cell with CO2, and measure the oil recovery. In phase 4, we conduct cyclic CO2 tests using a core flooding system, and measure the oil recovery. We also evaluate the oil viscosity and wettability of the core plugs before and after cyclic CO2 process.
The results of the CCE tests conducted using the PVT cell and visualization tests conducted using the visual cell show that CO2 can significantly dissolve into and expand the Montney oil. The results of the CO2 soaking tests and cyclic CO2 process show that the oil swelling due to CO2-oil interactions results in high oil recovery factor from the oil-saturated core plugs. In addition, we observe solid precipitates due to CO2-oil interactions at the bulk-phase conditions in the visual cell. SEM/EDS analysis on the solid precipitates show the existence of carbon and sulfur, the main components of asphaltene. The results of IP-143 test confirm the formation asphaltene when the Montney oil contacts CO2 at reservoir conditions.
|File Size||2 MB||Number of Pages||26|
Alharthy, N., Teklu, T., Kazemi, H., Graves, R., Hawthorne, S., Braunberger, J., & Kurtoglu, B. (2015, September 28). Enhanced Oil Recovery in Liquid-Rich Shale Reservoirs: Laboratory to Field. Society of Petroleum Engineers. doi:10.2118/175034-MS.
Arenas-Alatorre, J., Schabes-Retchkiman, P. S., & Rodriguez-Lugo, V. (2016). Electron microscopy characterization of crystalline nanostructures present in asphaltene. Energy and Fuels, 30(5), 3752-3757. doi:10.1021/acs.energyfuels.5b02407
Cudjoe, S., Vinassa, M., Henrique Bessa Gomes, J.. A comprehensive approach to sweet-spot mapping for hydraulic fracturing and CO2 huff-n-puff injection in Chattanooga shale formation. Journal of Natural Gas Science and Engineering doi: http://dx.doi.org/10.1016/j.jngse.2016.03.042.
Dymond, J. H., & Malhotra, R. (1988). The tait equation: 100 years on. International Journal of Thermophysics, 9(6), 941-951. doi:10.1007/BF01133262
Gong, Y. and Gu, Y. 2015. Miscible CO2 Simultaneous Water-and-Gas (CO2-SWAG) Injection in the Bakken Formation. Energy and Fuels 29 (9): 5655-65. doi: 10.1021/acs.energyfuels.5b01182.
Gonalves, F. A. M. M., Trindade, A. R., Costa, C. S. M. F., Bernardo, J. C. S., Johnson, I., Fonseca, I. M. A., & Ferreira, A. G. M. (2010). PVT, viscosity, and surface tension of ethanol: New measurements and literature data evaluation. Journal of Chemical Thermodynamics, 42(8), 1039-1049. doi:10.1016/j.jct.2010.03.022
Gonçalves, M. L. A., Ribeiro, D. A., Teixeira, A. M. R. F., & Teixeira, M. A. G. (2007). Influence of asphaltenes on coke formation during the thermal cracking of different Brazilian distillation residues. Fuel, 86(4), 619-623. doi:10.1016/j.fuel.2006.08.022
Habibi, A., Dehghanpour, H., Binazadeh, M., Bryan, D., & Uswak, G. (2016, June 1). Advances in Understanding Wettability of Tight Oil Formations: A Montney Case Study. Society of Petroleum Engineers. doi:10.2118/175157-PA.
Hawthorne, S.B., Gorecki, C.D., Sorensen, J.A.. 2013. Hydrocarbon mobilization mechanisms from upper, middle, and lower Bakken reservoir rocks exposed to CO2. Presented at the Society of Petroleum Engineers - SPE Canadian Unconventional Resources Conference 2013 - Unconventional Becoming Conventional: Lessons Learned and New Innovations.
Heller, R. and Zoback, M. 2014. Adsorption of methane and carbon dioxide on gas shale and pure mineral samples. Journal of Unconventional Oil and Gas Resources 8: 14-24. doi: http://dx.doi.org/10.1016/j.juogr.2014.06.001.
He, K., Xu, L., Gao, Y.. 2015. Evaluation of surfactant performance in fracturing fluids for enhanced well productivity in unconventional reservoirs using Rock-on-a-Chip approach. Journal of Petroleum Science and Engineering 135: 531-41. doi: 10.1016/j.petrol.2015.10.008.
Hirschberg, A., de Jong, L. N. J., Schipper, B. A., & Meijer, J. G. (1984). INFLUENCE OF TEMPERATURE AND PRESSURE ON ASPHALTENE FLOCCULATION. Society of Petroleum Engineers Journal, 24(3), 283-293. Retrieved from www.scopus.com
Hoffman, B.T. 2012. Comparison of various gases for enhanced recovery from shale oil reservoirs. Presented at the Proceedings - SPE Symposium on Improved Oil Recovery. http://webbook.nist.gov/chemistry/fluid/
Kathel, P. and Mohanty, K.K. 2013. Wettability alteration in a tight oil reservoir. Energy and Fuels 27 (11): 6460-8. doi: 10.1021/ef4012752.
Levine, J.S., Fukai, I., Soeder, D.J.. 2016. U.S. DOE NETL methodology for estimating the prospective CO2 storage resource of shales at the national and regional scale. International Journal of Greenhouse Gas Control 51: 81-94. doi: http://dx.doi.org/10.1016/j.ijggc.2016.04.028.
Liu, F., Ellett, K., Xiao, Y.. 2013. Assessing the feasibility of CO2 storage in the New Albany Shale (Devonian-Mississippian) with potential enhanced gas recovery using reservoir simulation. International Journal of Greenhouse Gas Control 17: 111-26. doi: 10.1016/j.ijggc.2013.04.018.
Lu, J., Nicot, J., Mickler, P.J.. 2016. Alteration of Bakken reservoir rock during CO2-based fracturing—An autoclave reaction experiment. Journal of Unconventional Oil and Gas Resources 14: 72-85. doi: http://dx.doi.org/10.1016/j.juogr.2016.03.002.
Ma, J., Wang, X., Gao, R.. 2015. Enhanced light oil recovery from tight formations through CO2 huff ‘n’ puff processes. Fuel 154: 35-44. doi: 10.1016/j.fuel.2015.03.029.
Ma, J., Wang, X., Gao, R.. 2016. Study of cyclic CO2 injection for low-pressure light oil recovery under reservoir conditions. Fuel 174: 296-306. doi: 10.1016/j.fuel.2016.02.017.
Pu, W., Wei, B., Jin, F.. 2016. Experimental investigation of CO2 huff-n-puff process for enhancing oil recovery in tight reservoirs. Chemical Engineering Research and Design 111: 269-76. doi: 10.1016/j.cherd.2016.05.012.
Wan, T., Yu, Y. and Sheng, J.J. 2015. Experimental and numerical study of the EOR potential in liquid-rich shales by cyclic gas injection. Journal of Unconventional Oil and Gas Resources 12: 56-67. doi: http://dx.doi.org/10.1016/j.juogr.2015.08.004.
Wang, X., Zhang, S., & Gu, Y. (2010). Four important onset pressures for mutual interactions between each of three crude oils and CO2. Journal of Chemical and Engineering Data, 55(10), 4390-4398. doi:10.1021/je1005664
Wang, X. and Gu, Y. 2011. Oil Recovery and Permeability Reduction of a Tight Sandstone Reservoir in Immiscible and Miscible CO 2 Flooding Processes. Industrial and Engineering Chemistry Research 50 (4): 2388-99. doi: 10.1021/ie1016046.
Wang, Z., Ma, J., Gao, R., Zhen, F., Huang, C., Tontiwachwuthikul, P., Liang, Z., "Optimizing Cyclic CO2 Injection for Low-Permeability Oil Reservoirs through Experimental Study," SPE 167193, presentation to SPE unconventional Resources Conference Canada held in Calgary, Alberta, Canada, 5-7 November, 2013.
Yang, D., Gu, Y. and Tontiwachwuthikul, P. 2008. Wettability determination of the crude oil-reservoir brine-reservoir rock system with dissolution of CO2 at high pressures and elevated temperatures. Energy and Fuels 22 (4): 2362-71. doi: 10.1021/ef800012w.
Yu, Y., Meng, X. and Sheng, J.J. 2016. Experimental and numerical evaluation of the potential of improving oil recovery from shale plugs by nitrogen gas flooding. Journal of Unconventional Oil and Gas Resources 15: 56-65. doi: http://dx.doi.org/10.1016/j.juogr.2016.05.003.