The Longwangmiao Fm gas reservoirs in the Moxi tectonic structure in Sichuan Basin are characterized by deep burial, high temperature, high pressure, significant thickness, high acidic gas content, and high production rate. The perforating and slotted liner completion modes are usually applied in the area. Based on the filtration flow hypothesis, the gas filtration models of the reservoir near the wellbore have been established by the finite element method. The reservoir filtration pressure field and the gas flow velocity field are simulated, and the influence of perforation on the filtration fields is also analyzed. The simulation results show that the pressure depression cone occurs in both cases of completion mode, meaning that the filtration pressure changes nonlinearly from the supply boundary towards the wellbore. The pressure cone is more obvious in the case of perforation completion than that of the slotted liner completion. The gas flow velocity near the perforation hole is higher than that of the slotted liner opening. Two gas wells with similar physical properties and different completion modes have been selected for test analysis. When the wells are stimulated by the acidizing technique, the testing production of the perforation completion well is higher than that of the slotted liner completion well. The test results are in good accordance with the simulation model results. The filtration models of the near-wellbore area established by the finite element method provide important theoretical criteria and can be used for the selection of the optimal completion type.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
F. Yongqiang, Y. He, W. Yezhong, et al., “Reservoir stimulation techniques and their application to the Longwangmiao Fm gas reservoirs in the Sichuan Basin,” Nat. Gas Ind., 34(3), 93-96 (2014).
L. Yufei, S. Zhaoyi, L. Niannian, et al., “Completion difficulties of HPHT and high-flowrate sour gas wells in the Longwangmiao Fm gas reservoir, Sichuan Basin, and corresponding countermeasures,” Nat. Gas Ind., 36(4), 60-64 (2016).
K. C. Harris, “The effect of perforating on well productivity,” J. Pet.Technol., 18(4), 518-528 (1966).
H. O. Mcleod, “The effect of perforating conditions on well performance,” J. Pet.Technol., 35(1), 31-39 (1983).
L. Zhanghua, M. Yingfeng, and M. Dong, “A study on application of 2-D finite element heat flow model to perforated well,” Nat. Gas Ind., 20(4), 49-53(2000).
L. Zhanghua, M. Yingfeng, and Z. Jianhua, “Application of thermal fluid field- percolation field simulation to perforated completion,” Xinjiang Pet. Geol., 26(1), 73-76 (2005).
G. Xiao, D. Zhimin, C. Xiaofan, et al., “New advancement of percolation study on fractured acid gas reservoir,” Nat. Gas Ind., 26(1), 30-33(2006).
W. Xinyuan, L. Zhanghua, M. Yingfeng, et al., “Seepage field analysis of fractured gas reservoir with different completion methods,” Nat. Gas Geosci., 22(6), 1123-1127 (2011).
W. Chenxing, L. Zhanghua, G. Yanru, et al., “Finite element analysis of seepage field for perforating completion,” Fault-Block Oil Gas Field, 21(4), 500-503(2014).
G. Yanru, L. Zhanghua, W. Chenxing, et al., “Analysis of fluid-solid coupling seepage field for gas well,” Fault-Block Oil Gas Field, 19(4), 481-484 (2012).
Yunfang Zhai, Fluid Mechanics in Porous Medium, Petroleum Industry Press, Beijing (2003), pp. 13-15.
F. Wenguang, Mechanics of Fluids in Porous Media, Science Press, Beijing, China (2007), pp. 217-248.
R. H. Dean, X. L. Cai, C. M. Stone, et al., “A comparison of techniques for coupling porous flow and geomechanics,” SPE J., 11(01) 132-140 (2006).
J. P. W. Nicholson and S. P. Hunt, “Distinct element analysis of borehole instability in fractured petroleum reservoir seal formation,” SPE Asia Pacific Oil and Gas Conference and Exhibition, Perth, Australia (2004).
Acknowledgments
The authors are grateful for the support of the Scientific Research Project of Southwest Oil and Gas Field Company, PetroChina (No. 20210302-21).
Author information
Authors and Affiliations
Corresponding authors
Additional information
Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 4, pp. 99–102, July–August, 2021.
Rights and permissions
About this article
Cite this article
Li, S., Fan, Y., Gou, B. et al. Simulation of Filtration Fields with Different Completion Methods in Carbonate Gas Reservoirs. Chem Technol Fuels Oils 57, 698–704 (2021). https://doi.org/10.1007/s10553-021-01295-y
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10553-021-01295-y