@Article{ee.2023.045870,
AUTHOR = {Xingliang Deng, Peng Cao, Yintao Zhang, Yuhui Zhou, Xiao Luo, Liang Wang},
TITLE = {Research on Quantitative Identification of Three-Dimensional Connectivity of Fractured-Vuggy Reservoirs},
JOURNAL = {Energy Engineering},
VOLUME = {121},
YEAR = {2024},
NUMBER = {5},
PAGES = {1195--1207},
URL = {http://www.techscience.com/energy/v121n5/56342},
ISSN = {1546-0118},
ABSTRACT = {The fractured-vuggy carbonate oil resources in the western basin of China are extremely rich. The connectivity of carbonate reservoirs is complex, and there is still a lack of clear understanding of the development and topological structure of the pore space in fractured-vuggy reservoirs. Thus, effective prediction of fractured-vuggy reservoirs is difficult. In view of this, this work employs adaptive point cloud technology to reproduce the shape and capture the characteristics of a fractured-vuggy reservoir. To identify the complex connectivity among pores, fractures, and vugs, a simplified one-dimensional connectivity model is established by using the meshless connection element method (CEM). Considering that different types of connection units have different flow characteristics, a sequential coupling calculation method that can efficiently calculate reservoir pressure and saturation is developed. By automatic history matching, the dynamic production data is fitted in real-time, and the characteristic parameters of the connection unit are inverted. Simulation results show that the three-dimensional connectivity model of the fractured-vuggy reservoir built in this work is as close as 90% of the fine grid model, while the dynamic simulation efficiency is much higher with good accuracy.},
DOI = {10.32604/ee.2023.045870}
}