Effect of Fracture Geometric Properties on Fluid Flow and Dynamic Characteristics in Fractured Reservoirs

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Sobhani Oghaz Ali; Emami Niri Mohammad

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Journal: PETROLEUM RESEARCH Year:2022 | Volume:32 | Issue:6 Page(s): 49-64

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Information Journal Paper

Title

Effect of Fracture Geometric Properties on Fluid Flow and Dynamic Characteristics in Fractured Reservoirs

Author(s)

Sobhani Oghaz Ali | Emami Niri Mohammad | Issue Writer Certificate

Keywords

Fracture ReservoiQ4

r Fracture ParametersQ4

Single FractureQ4

Multi-fracture NetworkQ4

Dynamic PermQ4

Abstract

In this research, we studied fracture parameters comprehensively and analyzed their sensitivity by the use of discrete fracture model and finite-element method. This paper seeks to find the most effective fracture parameters on fluid flow behavior in reservoirs. The experiments are conducted in two states of single and Multi-fracture Networks to analyze the effectiveness of the fracture parameters. During the experiments, all the related parameters were held constant except one, and then that variable parameter was changed step by step. The flow behavior was measured in these steps and the dependency of flow on each of the other Fracture Parameters was analyzed. Results indicate that the sensitivity interval of fracture intensity is between 6 to 30 fractures per cubic meters. This interval for fracture dip and orientation is 0˚ to 90˚ and 0˚ to 135˚, respectively. Also, high changes in flow behavior occur when the fracture length is between 0. 14 to 0. 84 meters, and the fracture aperture ranges between 0. 01mm to 0. 1mm. Quantitative analysis of the obtained results showed that aperture is the only parameter that alters the crack behavior (from improving fluid flow to weakening it). Furthermore, sensitivity analysis revealed that for a Single Fracture, the aperture and orientation are the most important parameters, while the fracture intensity and aperture are the most effective ones for the Multi-fracture Network.

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