Open Access
PROCEEDINGS
Analysis of Production Dynamics of Fractured Horizontal Well with CO2 Huff and Puff in Shale Reservoirs
Meng Wang1, Jun Yao1, Dongyan Fan1,*
1 Research Centre of Multiphase Flow in Porous, China University of Petroleum (East China), Qingdao, 262700, China
* Corresponding Author: Dongyan Fan. Email:
The International Conference on Computational & Experimental Engineering and Sciences 2023, 26(2), 1-1. https://doi.org/10.32604/icces.2023.08913
Abstract
In view of the current situation of the lack of suitable calculation models for the analysis of production
dynamics of fractured horizontal well with CO
2 huff and puff in shale reservoirs,based on the process and
mechanism of CO
2 huff and puff, an analytical model for the production dynamics of fractured horizontal
well with CO
2 huff and puff in shale reservoirs was proposed, in which took into account the changes in crude
oil viscosity and volume caused by the difference in CO
2 concentration at different locations in the formation
after soaking and the adsorption and desorption process of CO
2 in the shale matrix. The solution was
performed by Laplace transform and the factors affecting pressure and production rate during the
production of fractured horizontal well with CO
2 huff and puff were analyzed. The results show that the
seepage flow of fractured horizontal well with CO
2 huff and puff included seven flow stages: wellbore
storage, hydraulic fracture radial flow, hydraulic fracture linear flow, laminar fracture to hydraulic fracture
flow, matrix to laminar fracture unsteady flow, two-three-four zone transition flow, and boundary control
flow; bedding fracture had a significant effect on pressure and production early, and the greater the inflow
capacity, the smoother the pressure derivative, the higher the production rate; the greater the amount of
CO
2 adsorbed in the matrix, the slower the pressure front propagates, the lower the required differential
pressure, the greater the production rate of fractured horizontal well, and the longer the stable production
time; the CO
2 diffusion coefficient mainly affected the flow of bedding fracture and matrix to bedding
fracture, the larger the diffusion coefficient, the smaller the differential pressure required for constant
production, and the larger the production rate; with the increase of throughput rounds, the production rate
of fractured horizontal well increased, but the increase decreased.
Keywords
Cite This Article
APA Style
Wang, M., Yao, J., Fan, D. (2023). Analysis of production dynamics of fractured horizontal well with co<sub>2</sub> huff and puff in shale reservoirs. The International Conference on Computational & Experimental Engineering and Sciences, 26(2), 1-1. https://doi.org/10.32604/icces.2023.08913
Vancouver Style
Wang M, Yao J, Fan D. Analysis of production dynamics of fractured horizontal well with co<sub>2</sub> huff and puff in shale reservoirs. Int Conf Comput Exp Eng Sciences . 2023;26(2):1-1 https://doi.org/10.32604/icces.2023.08913
IEEE Style
M. Wang, J. Yao, and D. Fan "Analysis of Production Dynamics of Fractured Horizontal Well with CO<sub>2</sub> Huff and Puff in Shale Reservoirs," Int. Conf. Comput. Exp. Eng. Sciences , vol. 26, no. 2, pp. 1-1. 2023. https://doi.org/10.32604/icces.2023.08913