2025/01/24 by Ye Yang, Hongyan Wang, Zhiqiang Liu · 1 voice
Engineering · #Hydraulic Fracturing and Reservoir Analysis #Drilling and Well Engineering #Reservoir Engineering and Simulation Methods
paper · doi:10.2113/2025/lithosphere_2023_349
openalex publication_date 2025/01/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/11
Abstract Shale gas reservoir has the characteristics of low porosity and permeability, so it can only be put into development by hydraulic fracturing in engineering. However, the current research on the relationship between flowback rate and production is still unclear, so it is necessary to conduct a deeper study on reservoir imbibition characteristics. In this study, a mathematical model is put forward to guide the imbibition experiment, and finally a simple method of engineering research scheme of reservoir imbibition characteristics in the study area is obtained. This method relies on the working steps of “grey correlation analysis → imbibition experiment → sampling inspection” and obtains the following conclusions. When the core water saturation of the reservoir in the study area is less than 30%, the water in the pores is bound water, and it begins to hinder the seepage channel. This conclusion can guide the setting of backflow rate in engineering and continue to compare fracturing fluids with different formulations with the help of the current test bench in the next research. On the premise of considering the influence of shale hydration on microscopic pore structure, the influence of fracturing fluid system on shale imbibition is further discussed.