Recovery mechanisms and formation influencing factors of miscible CO2 huff-n-puff processes in shale oil reservoirs: A systematic review
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Abstract
Shale oil production is vital for meeting the rising global energy demand, while primary recovery rates are poor due to the ultralow permeability. CO2 huff-n-puff can boost yields by enabling key enhanced oil recovery mechanisms. This review examines the recent research on mechanisms and formation factors influencing CO2 huff-n-puff performance in shale liquid reservoirs. During the soaking period, oil swelling, viscosity reduction and CO2-oil miscibility occur through molecular diffusion into shale nanopores. The main recovery mechanism during the puff period is depressurization with oil desorption and elastic energy release. The interplay between matrix permeability and fracture network directly determines the CO2 huff-n-puff performance. Nanopore confinement, wettability alterations, and heterogeneity also significantly impact the huff-n-puff processes, with controversial effects under certain conditions. This work provides an integrated discussion on the mechanistic insights and formation considerations essential for the advancement of CO2 huff-n-puff application in shale reservoirs. By synthesizing the recent research findings, we aim to spotlight the key challenges and opportunities in considering reservoirs for this process, thereby contributing to the advancement of CO2 huff-n-puff applications for enhanced oil recovery.
Ducument Type: Invite review
Cites as: Wan, Y., Jia, C., Lv, W., Jia, N., Jiang, L., Wang, Y. Recovery mechanisms and formation influencing factors of miscible CO2 huff-n-puff processes in shale oil reservoirs: A systematic review. Advances in Geo-Energy Research, 2024, 11(2): 88-102. https://doi.org/10.46690/ager.2024.02.02
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Alahmari, S., Raslan, M., Khodaparast, P., et al. CO2 huff-n-puff: An experimental and modeling approach to delineate mass transfer and recovery from shale cores. Paper SPE 213400 Presented at the Middle East Oil, Gas and Geosciences Show, Manama, Bahrain, 19-21 February, 2023.
Alfarge, D., Wei, M., Bai, B. Factors affecting CO2-EOR in shale-oil reservoirs: Numerical simulation study and pilot tests. Energy & Fuels, 2017, 31(8): 8462-8480.
Alharthy, N. S., Teklu, T. W., Nguyen, T. N., et al. Nanopore compositional modeling in unconventional shale reservoirs. SPE Reservoir Evaluation & Engineering, 2016, 19(3): 415-428.
An, S., Zhan, Y., Mahani, H., et al. Kinetics of wettability alteration and droplet detachment from a solid surface by low-salinity: A lattice-Boltzmann method. Fuel, 2022, 329: 125294.
Awag, M., Mackay, E., Ghanbari, S. The impact of back-ground water flow on the early migration of a CO2 plume in a tilted aquifer during the post-injection period. Advances in Geo-Energy Research, 2023, 9(2): 125-135.
Bai, H., Zhang, Q., Li, Z., et al. Effect of fracture on production characteristics and oil distribution during CO2 huff-n-puff under tight and low-permeability conditions. Fuel, 2019, 246: 117-125.
Barclay, T. H., Mishra, S., New correlations for CO2-oil solubility and viscosity reduction for light oils. Journal of Petroleum Exploration and Production Technology, 2016, 6: 815-823.
Bijeljic, B., Muggeridge, A. H., Blunt, M. J. Multicomponent mass transfer across water films during hydrocarbon gas injection. Chemical Engineering Science, 2003, 58(11): 2377-2388.
Billemont, P., Coasne, B., De Weireld, G. Adsorption of carbon dioxide, methane, and their mixtures in porous carbons: Effect of surface chemistry, water content, and pore disorder. Langmuir, 2013, 29(10): 3328-3338.
Bora, R., Maini, B., Chakma, A. Flow visualization studies of solution gas drive process in heavy oil reservoirs with a glass micromodel. SPE Reservoir Evaluation & Engineering, 2000, 3(3): 224-229.
Burrows, L. C., Haeri, F., Cvetic, P., et al. A literature review of CO2, natural gas, and water-based fluids for enhanced oil recovery in unconventional reservoirs. Energy & Fuels, 2020, 34(5): 5331-5380.
Cao, M., Wu, X., An, Y., et al. Numerical simulation and performance evaluation of CO2 huff-n-puff processes in unconventional oil reservoirs. Paper SPE 486566 Presented at the Carbon Management Technology Conference, Texas, USA, 17-20 July, 2017.
Chen, C., Balhoff, M., Mohanty, K. K. Effect of reservoir heterogeneity on primary recovery and CO2 huff ‘n’puff recovery in shale-oil reservoirs. SPE Reservoir Evaluation & Engineering, 2014, 17(3): 404-413.
Chen, H., Wang, Y., Zuo, M., et al. A new prediction model of CO2 diffusion coefficient in crude oil under reservoir conditions based on BP neural network. Energy, 2022, 239: 122286.
Chen, Y., Li, Y., Valocchi, A. J., et al. Lattice Boltzmann simulations of liquid CO2 displacing water in a 2D heterogeneous micromodel at reservoir pressure conditions. Journal of Contaminant Hydrology, 2018, 212: 14-27.
Chung, F. T., Jones, R. A., Nguyen, H. T. Measurements and correlations of the physical properties of CO2-heavy crude oil mixtures. SPE Reservoir Engineering, 1988, 3(3): 822-828.
Cui, D., Yin, H., Liu, Y., et al. Effect of final pyrolysis temperature on the composition and structure of shale oil: Synergistic use of multiple analysis and testing methods. Energy, 2022, 252: 124062.
Deng, H., Sheng, G., Zhao, H., et al. Integrated optimization of fracture parameters for subdivision cutting fractured horizontal wells in shale oil reservoirs. Journal of Petroleum Science and Engineering, 2022, 212: 110205.
Do, H., Pinczewski, W. Diffusion controlled swelling of reservoir oil by direct contact with injection gas. Chemical Engineering Science, 1991, 46(5-6): 1259-1270.
Eide, Ø., Fernø, M. A., Alcorn, Z., et al. Visualization of carbon dioxide enhanced oil recovery by diffusion in fractured chalk. SPE Journal, 2016, 21(1): 112-120.
Elturki, M., Imqam, A. Experimental investigation of asphaltene deposition and its impact on oil recovery in Eagle Ford shale during miscible and immiscible CO2 huff-n-puff gas Injection. Energy & Fuels, 2023, 37(4): 2993-3010.
Farajzadeh, R., Barati, A., Delil, H. A., et al. Mass transfer of CO2 into water and surfactant solutions. Petroleum Science and Technology, 2007, 25(12): 1493-1511.
Habibi, A., Yassin, M. R., Dehghanpour, H., et al. Experimental investigation of CO2-oil interactions in tight rocks: A Montney case study. Fuel, 2017, 203: 853-867.
Hall, P. J., Thomas, K. M., Marsh, H. The relation between coal macromolecular structure and solvent diffusion mechanisms. Fuel, 1992, 71(11): 1271-1275.
Hashim, F. A., Mostafa, R. R., Hussien, A. G., et al. Fick’s Law Algorithm: A physical law-based algorithm for numerical optimization. Knowledge-Based Systems, 2023, 260: 110146.
Hemmati-Sarapardeh, A., Khishvand, M., Naseri, A., et al. Toward reservoir oil viscosity correlation. Chemical Engineering Science, 2013, 90: 53-68.
Hill, L. B., Li, X., Wei, N. CO2-EOR in China: A comparative review. International Journal of Greenhouse Gas Control, 2020, 103: 103173.
Hoffman, B. T., Reichhardt, D. Recovery mechanisms for cyclic (huff-n-puff) gas injection in unconventional reservoirs: A quantitative evaluation using numerical simulation. Energies, 2020, 13(18): 4944.
Hu, X., Xie, J., Cai, W., et al. Thermodynamic effects of cycling carbon dioxide injectivity in shale reservoirs. Journal of Petroleum Science and Engineering, 2020, 195: 107717.
Hu, Y., Hao, M., Chen, G., et al. Technologies and practice of CO2 flooding and sequestration in China. Petroleum Exploration and Development, 2019, 46(4): 753-766.
Huang, F., Xu, R., Jiang, P., et al. Pore-scale investigation of CO2/oil exsolution in CO2 huff-n-puff for enhanced oil recovery. Physics of Fluids, 2020, 32(9): 092011.
IEA. World energy outlook 2022, 2022.
Islam, A. W., Patzek, T. W., Sun, A. Y. Thermodynamics phase changes of nanopore fluids. Journal of Natural Gas Science and Engineering, 2015, 25: 134-139.
Iwasaki, K., Nagatsu, Y., Ban, T., et al. Experimental demonstration of the suppression of viscous fingering in a partially miscible system. Physical Chemistry Chemical Physics, 2023, 25(19): 13399-13409.
Jha, K. A laboratory study of heavy oil recovery with carbon dioxide. Journal of Canadian Petroleum Technology, 1986, 25(2): 54-63.
Jia, B., Tsau, J. S., Barati, R. Role of molecular diffusion in heterogeneous, naturally fractured shale reservoirs during CO2 huff-n-puff. Journal of Petroleum Science and Engineering, 2018, 164: 31-42.
Jiang, S., Li, Y., Wang, F., et al. A state-of-the-art review of CO2 enhanced oil recovery as a promising technology to achieve carbon neutrality in China. Environmental Research, 2022, 210: 112986.
Kar, A., Chiang, T. Y., Ortiz Rivera, I., et al. Enhanced transport into and out of dead-end pores. ACS Nano, 2015, 9(1): 746-753.
Kohanpur, A. H., Rahromostaqim, M., Valocchi, A. J., et al. Two-phase flow of CO2-brine in a heterogeneous sandstone: Characterization of the rock and comparison of the lattice-Boltzmann, pore-network, and direct numerical simulation methods. Advances in Water Resources, 2020, 135: 103469.
Kuila, U., Prasad, M. Surface area and pore-size distribution in clays and shales. Paper SPE 146869 Presented at the SPE Annual Technical Conference and Exhibition, Colorado, USA, 30 October-2 November, 2011.
Kumar, N., Sampaio, M. A., Ojha, K., et al. Fundamental aspects, mechanisms and emerging possibilities of CO2 miscible flooding in enhanced oil recovery: A review. Fuel, 2022, 330: 125633.
Lan, Y., Yang, Z., Wang, P., et al. A review of microscopic seepage mechanism for shale gas extracted by supercritical CO2 flooding. Fuel, 2019, 238: 412-424.
Leahy-Dios, A., Firoozabadi, A. Unified model for nonideal multicomponent molecular diffusion coefficients. AICHE Journal, 2007, 53(11): 2932-2939.
Lee, J. H., Jeong, M. S., Lee, K. S. Incorporation of multi-phase solubility and molecular diffusion in a geochemical evaluation of the CO2 huff-n-puff process in liquid-rich shale reservoirs. Fuel, 2019a, 247: 77-86.
Lee, J. H., Lee, K. S. Investigation of asphaltene-derived formation damage and nano-confinement on the performance of CO2 huff-n-puff in shale oil reservoirs. Journal of Petroleum Science and Engineering, 2019b, 182: 106304.
Li, H., Yang, D. Determination of individual diffusion coefficients of solvent/CO2 mixture in heavy oil with pressure-decay method. SPE Journal, 2016, 21(1): 131-143.
Li, H., Zheng, S., Yang, D. Enhanced swelling effect and viscosity reduction of solvent (s)/CO2/heavy-oil systems. SPE Journal, 2013, 18(4): 695-707.
Li, L., Su, Y., Sheng, J. J., et al. Experimental and numerical study on CO2 sweep volume during CO2 huff-n-puff enhanced oil recovery process in shale oil reservoirs. Energy & Fuels, 2019a, 33(5): 4017-4032.
Li, L., Wang, C., Li, D., et al. Experimental investigation of shale oil recovery from Qianjiang core samples by the CO2 huff-n-puff EOR method. RSC Advances, 2019b, 9(49): 28857-28869.
Li, M., Chen, Z., Qian, M., et al. What are in pyrolysis S1 peak and what are missed? Petroleum compositional characteristics revealed from programed pyrolysis and implications for shale oil mobility and resource potential. International Journal of Coal Geology, 2020, 217: 103321.
Li, S., Qiao, C., Zhang, C., et al. Determination of diffusion coefficients of supercritical CO2 under tight oil reservoir conditions with pressure-decay method. Journal of CO2 Utilization, 2018, 24: 430-443.
Li, Z., Husein, M., Hemmati-Sarapardeh, A. Gas Injection Methods, Amsterdam, Netherlands, Charlotte Cockle, 2022.
Liu, J., Li, H., Tan, Q., et al. Quantitative study of CO2 huff-n-puff enhanced oil recovery in tight formation using online NMR technology. Journal of Petroleum Science and Engineering, 2022, 216: 110688.
Liu, Q., Li, J., Liang, B., et al. Complex wettability behavior triggering mechanism on imbibition: A model construction and comparative study based on analysis at multiple scales. Energy, 2023a, 275: 127434.
Liu, Q., Li, J., Liang, B., et al. Microscopic flow of CO2 in complex pore structures: A recent 10-year review. Sustainability, 2023b, 15(17): 12959.
Mamoudou, S., Perez, F., Tinni, A., et al. Evaluation of huff-n-puff in shale using experiments and molecular simulations. Paper URTEC 20202923 Presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, Virtual, 20-22 July, 2020.
Marica, F., Jofré, S. A. B., Mayer, K. U., et al. Determination of spatially-resolved porosity, tracer distributions and dif fusion coefficients in porous media using MRI measurements and numerical simulations. Journal of contaminant hydrology, 2011, 125(1-4): 47-56.
Mehmani, A., Kelly, S., Torres-Verdín, C. Review of micro/-nanofluidic insights on fluid transport controls in tight rocks. Petrophysics, 2019, 60(6): 872-890.
Meng, M., Chen, Z., Liao, X., et al. A well-testing method for parameter evaluation of multiple fractured horizontal wells with non-uniform fractures in shale oil reservoirs. Advances in Geo-Energy Research, 2020, 4(2): 187-198.
Milad, M., Junin, R., Sidek, A., et al. Huff-n-puff technology for enhanced oil recovery in shale/tight oil reservoirs: Progress, gaps, and perspectives. Energy & Fuels, 2021, 35(21): 17279-17333.
Moh, D. Y., Zhang, H., et al. Soaking in CO2 huff-n-puff: A single-nanopore scale study. Fuel, 2022, 308: 122026.
Mugisha, J., Al-Rbeawi, S., Artun, E. Analytical modeling of flow regimes during cyclic CO2 injection in hydraulically fractured tight reservoirs for enhanced oil recovery. Journal of Petroleum Science and Engineering, 2021, 201: 108385.
Muir, C., Lowry, B., Balcom, B. Measuring diffusion using the differential form of Fick’s law and magnetic resonance imaging. New Journal of Physics, 2011, 13(1): 015005.
Nemer, M. N., Rao, P. R., Schaefer, L. Wettability alteration implications on pore-scale multiphase flow in porous media using the lattice Boltzmann method. Advances in Water Resources, 2020, 146: 103790.
Or, C., Sasaki, K., Sugai, Y., et al. Swelling and viscosity reduction of heavy oil by CO2-gas foaming in immiscible condition. SPE Reservoir Evaluation & Engineering, 2016, 19(2): 294-304.
Page, S., Williamson, A., Mason, I. Carbon capture and storage: Fundamental thermodynamics and current technology. Energy Policy, 2009, 37(9): 3314-3324.
Palancz, B. The determination of transport coefficients in three-component systems. Acta Technica, 1976, 83(3-4): 229-246.
Pankaj, P., Mukisa, H., Solovyeva, I., et al. Boosting oil recovery in naturally fractured shale using CO2 huff-n-puff. Paper SPE 191823 Presented at the SPE Argentina Exploration and Production of Unconventional Resources Symposium, Neuquen, Argentina, 14-16 August, 2018.
Paul, A., Laurila, T., Vuorinen, V., et al. Fick’s laws of diffusion. Thermodynamics, Diffusion and the Kirkendall Effect in Solids, 2014: 115-139.
Pei, J., Zhang, J. S. Determination of adsorption isotherm and diffusion coefficient of toluene on activated carbon at low concentrations. Building and Environment, 2012, 48: 66-76.
Peng, Z., Sheng, J. Diffusion effect on shale oil recovery by CO2 huff-n-puff. Energy & Fuels, 2023, 37(4): 2774-2790.
Pu, W., Wei, B., Jin, F., et al. Experimental investigation of CO2 huff-n-puff process for enhancing oil recovery in tight reservoirs. Chemical Engineering Research and Design, 2016, 111: 269-276.
Qin, C., Jiang, Y., Zhou, J., et al. Influence of supercritical CO2 exposure on water wettability of shale: Implications for CO2 sequestration and shale gas recovery. Energy, 2022, 242: 122551.
Quintero, H., Abedini, A., Mattucci, M., et al. Nanofluidic analysis of flowback enhancers for the permian basin: Unconventional method for unconventional rock. Paper SPE 195800 Presented at the SPE Annual Technical Conference and Exhibition, Calgary, Alberta, Canada, 30 September-2 October, 2019.
Rouzineau, D., Prevost, M., Meyer, M. Nonequilibrium models for a multi component reactive distillation column. EFCE Distillation & Absorption Working Party, 2000: 135466751.
Safi, R., Agarwal, R. K., Banerjee, S. Numerical simulation and optimization of CO2 utilization for enhanced oil recovery from depleted reservoirs. Chemical Engineering Science, 2016, 144: 30-38.
Saini, D. CO2-Reservoir Oil Miscibility: Experimental and Non-experimental Characterization and Determination Approaches. Berlin, Germany, Springer, 2018.
Sambo, C., Liu, N., Shaibu, R., et al. A technical review of CO2 for enhanced oil recovery in unconventional oil reservoirs. Geoenergy Science and Engineering, 2023, 221: 111185.
Sanchez-Rivera, D., Mohanty, K., Balhoff, M. Reservoir simulation and optimization of Huff-and-Puff operations in the Bakken Shale. Fuel, 2015, 147: 82-94.
Santos, J. E., Yin, Y., Jo, H., et al. Computationally efficient multiscale neural networks applied to fluid flow in complex 3D porous media. Transport in Porous Media, 2021, 140(1): 241-272.
Sennaoui, B., Pu, H., Malki, M., et al. Reservoir simulation study and optimizations of CO2 huff-n-puff mechanisms in Three Forks formation. Paper SPE 2022137 presented at the International Geomechanics Symposium, Abu Dhabi, UAE, 7-10 November, 2022.
Shabib-Asl, A., Chen, S., Zheng, S. Performance of CO2 foam huff and puff in tight oil reservoirs. Frontiers in Energy Research, 2022, 10: 826469.
Sharifigaliuk, H., Mahmood, S. M., Rezaee, R., et al. Conventional methods for wettability determination of shales: A comprehensive review of challenges, lessons learned, and way forward. Marine and Petroleum Geology, 2021, 133: 105288.
Sheng, J. J. Critical review of field EOR projects in shale and tight reservoirs. Journal of Petroleum Science and Engineering, 2017, 159: 654-665.
Sigmund, P. M. Prediction of molecular diffusion at reservoir conditions. Part II-estimating the effects of molecular diffusion and convective mixing in multicomponent systems. Journal of Canadian Petroleum Technology, 1976a, 15(3): PETSOC 760307.
Sigmund, P. M. Prediction of molecular diffusion at reservoir conditions. Part I. Measurement and prediction of binary dense gas diffusion coefficients. The Journal of Canadian Petroleum, 1976b, 15(2): PETSOC 760205.
Soliman, M. N., Guen, F. Z., Ahmed, S. A., et al. Energy consumption and environmental impact assessment of desalination plants and brine disposal strategies. Process Safety and Environmental Protection, 2021, 147: 589-608.
Song, C., Yang, D. Experimental and numerical evaluation of CO2 huff-n-puff processes in Bakken formation. Fuel, 2017, 190: 145-162.
Song, Y., Song, Z., Zeng, H., et al. N2 and CO2 huff-n-puff for enhanced tight oil recovery: An experimental study using nuclear magnetic resonance. Energy & Fuels, 2022, 36(3): 1515-1521.
Song, Z., Song, Y., Guo, J., et al. Effect of nanopore confinement on fluid phase behavior and production performance in shale oil reservoir. Industrial & Engineering Chemistry Research, 2021, 60(3): 1463-1472.
Sun, Q., Bhusal, A., Zhang, N., et al. Molecular insight into minimum miscibility pressure estimation of shale oil/CO2 in organic nanopores using CO2 huff-n-puff. Chemical Engineering Science, 2023, 280: 119024.
Syed, F. I., Dahaghi, A. K., Muther, T. Laboratory to field scale assessment for EOR applicability in tight oil reservoirs. Petroleum Science, 2022a, 19(5): 2131-2149.
Syed, F. I., Muther, T., Dahaghi, A. K., et al. CO2 EOR performance evaluation in an unconventional reservoir through mechanistic constrained proxy modeling. Fuel, 2022b, 310: 122390.
Syed, F. I., Muther, T., Van, V. P., et al. Numerical trend analysis for factors affecting EOR performance and CO2 storage in tight oil reservoirs. Fuel, 2022c, 316: 123370.
Taheri-Shakib, J., Kantzas, A. A comprehensive review of microwave application on the oil shale: Prospects for shale oil production. Fuel, 2021, 305: 121519.
Tang, W., Sheng, J. J. Huff-n-puff gas injection or gas flooding in tight oil reservoirs? Journal of Petroleum Science and Engineering, 2022, 208: 109725.
Tang, Y., Tang, J., Liu, Q., et al. Review on phase behavior in tight porous media and microscopic flow mechanism of CO2 huff-n-puff in tight oil reservoirs. Geofluids, 2020, 2020: 8824743.
Thakur, G. Enhanced recovery technologies for unconventional oil reservoirs. Journal of Petroleum Technology, 2019, 71(9): 66-69.
Tick, G. R., McColl, C. M., Yolcubal, I., et al. Gas-phase diffusive tracer test for the in-situ measurement of tortuosity in the vadose zone. Water, Air, and Soil Pollution, 2007, 184: 355-362.
Wan, T., Sheng, J., Soliman, M. Y., et al. Effect of fracture characteristics on behavior of fractured shale-oil reservoirs by cyclic gas injection. SPE Reservoir Evaluation & Engineering, 2016, 19(2): 350-355.
Wang, H., Cai, J., Su, Y., et al. Pore-scale study on shale oil-CO2-water miscibility, competitive adsorption, and multiphase flow behaviors. Langmuir, 2023a, 39(34): 12226-12234.
Wang, H., Su, Y., Wang, W., et al. CO2-oil diffusion, adsorption and miscible flow in nanoporous media from pore-scale perspectives. Chemical Engineering Journal, 2022, 450: 137957.
Wang, L., He, Y., Wang, Q., et al. Multiphase flow characteristics and EOR mechanism of immiscible CO2 water-alternating-gas injection after continuous CO2 injection: A micro-scale visual investigation. Fuel, 2020, 282: 118689.
Wang, L., Tian, Y., Yu, X., et al. Advances in improved/enhanced oil recovery technologies for tight and shale reservoirs. Fuel, 2017a, 210: 425-445.
Wang, L., Wei, B., You, J., et al. Performance of a tight reservoir horizontal well induced by gas huff–n–puff integrating fracture geometry, rock stress-sensitivity and molecular diffusion: A case study using CO2, N2 and produced gas. Energy, 2023b, 263: 125696.
Wang, S., Feng, Q., Javadpour, F., et al. Competitive adsorption of methane and ethane in montmorillonite nanopores of shale at supercritical conditions: A grand canonical Monte Carlo simulation study. Chemical Engineering Journal, 2019, 355: 76-90.
Wang, W., Zheng, D., Sheng, G., et al. A review of stimulated reservoir volume characterization for multiple fractured horizontal well in unconventional reservoirs. Advances in Geo-Energy Research, 2017b, 1(1): 54-63.
Wanyan, Z., Liu, Y., Li, Z., et al. Mechanism and influence factor of hydrocarbon gas diffusion in porous media with shale oil. Advances in Geo-Energy Research, 2023, 7(1): 39-48.
Wei, B., Liu, J., Zhang, X., et al. Dynamics of mass exchange within tight rock matrix/fracture systems induced by nat- ural gas “dynamic” soaking and oil recovery prediction. Energy, 2022, 254: 124331.
Wei, B., Wang, B., Li, X., et al. CO2 storage in depleted oil and gas reservoirs: A review. Advances in Geo-Energy Research, 2023, 9(2): 76-93.
Wei, B., Zhong, M., Gao, K., et al. Oil recovery and compositional change of CO2 huff-n-puff and continuous injection modes in a variety of dual-permeability tight matrix-fracture models. Fuel, 2020, 276: 117939.
Wen, Y., Bryan, J., Kantzas, A. Estimation of diffusion coefficients in bitumen solvent mixtures as derived from low field NMR spectra. Journal of Canadian Petroleum Technology, 2005a, 44(4): PETSOC-05-04-03.
Wen, Y., Kantzas, A. Monitoring bitumen-solvent interactions with low-field nuclear magnetic resonance and X-Ray computer-assisted tomography. Energy & Fuels, 2005b, 19(4): 1319-1326.
Weng, X., Kresse, O., Cohen, C., et al. Modeling of hydraulic- fracture-network propagation in a naturally fractured formation. SPE Production & Operations, 2011, 26(4): 368- 380.
Wilke, C., Chang, P. Correlation of diffusion coefficients in dilute solutions. AICHE Journal, 1955, 1(2): 264-270.
Xu, H., Jiang, H., Wang, J., et al. Effect of CO2 soaking time on replacement efficiency and reservoir properties of tight oil and gas reservoirs. Journal of Natural Gas Science and Engineering, 2022, 97: 104357.
Yang, C., Gu, Y. A new method for measuring solvent diffusivity in heavy oil by dynamic pendant drop shape analysis (DPDSA). SPE Journal, 2006, 11(1): 48-57.
Yu, W., Zhang, Y., Varavei, A., et al. Compositional simulation of CO2 huff’n’puff in Eagle Ford tight oil reservoirs with CO2 molecular diffusion, nanopore confinement, and complex natural fractures. SPE Reservoir Evaluation & Engineering, 2019, 22(2): 492-508.
Yuan, L., Zhang, Y., Liu, S., et al. Molecular dynamics simulation of CO2-oil miscible fluid distribution and flow within nanopores. Journal of Molecular Liquids, 2023, 380: 121769.
Zhang, H., Wang, S., Yin, X., et al. Soaking in CO2 huff-n-puff: A single-nanopore scale study. Fuel, 2022a, 308: 122026.
Zhang, T., Tang, M., Ma, Y., et al. Experimental study on CO2/water flooding mechanism and oil recovery in ultralow-Permeability sandstone with online LF-NMR. Energy, 2022b, 252: 123948.
Zhang, W., Feng, Q., Wang, S., et al. CO2-regulated octane flow in calcite nanopores from molecular perspectives. Fuel, 2021, 286: 119299.
Zhang, Y., Yu, W., Li, Z., et al. Simulation study of factors affecting CO2 Huff-n-Puff process in tight oil reservoirs. Journal of Petroleum Science and Engineering, 2018, 163: 264-269.
Zhao, H., Wu, K., Huang, Z., et al. Numerical model of CO2 fracturing in naturally fractured reservoirs. Engineering Fracture Mechanics, 2021, 244: 107548.
Zheng, S., Sun, H., Yang, D. Coupling heat and mass transfer for determining individual diffusion coefficient of a hot C3 H8-CO2 mixture in heavy oil under reservoir conditions. International Journal of Heat and Mass Transfer, 2016, 102: 251-263.
Zheng, S., Yang, D. Determination of individual diffusion coefficients of C3H8/n-C4H10/CO2/heavy-Oil systems at high pressures and elevated temperatures by dynamic volume analysis. SPE Journal, 2017, 22(3): 799-816.
Zheng, Z., Di, Y., Wu, Y. S. Nanopore confinement effect on the phase behavior of CO2/hydrocarbons in tight oil reservoirs considering capillary pressure, fluid-wall interaction, and molecule adsorption. Geofluids, 2021, 2021: 2435930.
Zhou, X., Li, X., Shen, D., et al. CO2 huff-n-puff process to enhance heavy oil recovery and CO2 storage: An integration study. Energy, 2022, 239: 122003.
Zhou, X., Yuan, Q., Peng, X., et al. A critical review of the CO2 huff ‘n’puff process for enhanced heavy oil recovery. Fuel, 2018, 215: 813-824.
Zhu, J., Chen, J., Wang, X., et al. Experimental investigation on the characteristic mobilization and remaining oil distribution under CO2 huff-n-puff of Chang 7 continental shale oil. Energies, 2021, 14(10): 2782.
Zhu, Z., Fang, C., Qiao, R., et al. Experimental and molecular insights on mitigation of hydrocarbon sieving in Niobrara shale by CO2 huff ‘n’ puff. SPE Journal, 2020, 25(4): 1803-1811.
Zuloaga, P., Yu, W., Miao, J., et al. Performance evaluation of CO2 huff-n-puff and continuous CO2 injection in tight oil reservoirs. Energy, 2017, 134: 181-192.
Zuo, M., Chen, H., Qi, X., et al. Effects of CO2 injection volume and formation of in-situ new phase on oil phase behavior during CO2 injection for enhanced oil recovery (EOR) in tight oil reservoirs. Chemical Engineering Journal, 2023, 452: 139454.
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