To address the issue of interwell interference caused by adjacent well fracturing and development adjustments in shale gas reservoirs

existing dynamic evaluation methods for well groups based on single wells or those ignoring fracture network connectivity are inadequate. A well test analysis model for shale gas well groups

incorporating the connectivity of fracturing network

was developed based on a variable conductivity fracture model. By discretizing the fracture network

the model equation of multi-stage fracturing well groups was transformed into linear equations and the bottom-hole pressure solution of well groups was obtained. The bottom-hole pressure solution of the well groups was compared and validated using the finite volume numerical method. Typical characteristic curve diagrams of bottom-hole pressure

both with and without connected fractures

were established. Application examples of four wells on two platforms in the Fuling shale gas field were provided. The results showed that: ① Production wells had bilinear flow (1/4 stage)

linear flow (1/2 stage)

unsteady crossflow

and boundary quasi-steady flow stages

while non-production wells rarely had bilinear or linear flow stages. ②Under both connected and unconnected fractures

the bottom-hole pressure solution of the well group calculated by the finite volume numerical method was entirely consistent with that calculated by the method proposed in this paper. ③ The interpretation and evaluation results of measured data from four wells on two platforms in the Fuling shale gas field were consistent with field observations

verifying the reliability and practicality of the proposed method. The findings provide technical support for calculating shale gas reservoir parameters and fracturing parameters

and evaluating interwell connectivity.