Pressure Transient Behavior of Horizontal Wells Intersecting Multiple Hydraulic Fractures in Naturally Fractured Reservoirs

Abstract

In this study, we present a mesh-free semi-analytical technique for modeling pressure transient behavior of continuously and discretely hydraulically and naturally fractured reservoirs for a single-phase fluid. In our model, we consider a 3D reservoir, where each fracture is explicitly modeled without any upscaling or homogenization as required for dualporosity media. Fractures can have finite or infinite conductivities, and the formation (matrix) is assumed to have a finite permeability. Our approach is based on the boundary element method. The method has advantages such as the absence of grids and reduced dimensionality. It provides continuous rather than discrete solutions. The uniform-pressure boundary condition over the wellbore is used in our mathematical model. This is the true physical boundary condition for any type of well, whether fractured or not, provided that the friction pressure drop in the wellbore is small and the fluid is Newtonian. The method is sufficiently general to be applied to many different well geometries and reservoir geological settings, where the spatial domain may include arbitrary fracture and/or fault distribution, a

Pressure Transient Behavior of Horizontal Gas Injection Well in Low Permeable Reservoirs

“…It is typical to find complex natural fractures in shale reservoirs which bring more challenges to the development and production of these unconventional resources [5]. Despite of their complex geological fractures, horizontal hydraulic fractured wells have proven to be one of the successful development technologies for unconventional reservoirs due to their increased contact area and high permeable fractured path which allows fluid to flow easily in the ultra-low permeable reservoir [5][6][7].…”

Transient pressure behavior of horizontal well in gas reservoirs with arbitrary boundary

“…The exploration and development of natural gas plays an irreplaceable role in building a green and clean energy system (Zou et al., 2018). Horizontal wells can significantly accelerate production and increase recovery efficiency of gas reservoirs, especially in low permeability formations (Biryukov and Kuchuk, 2015; He et al., 2020; Zheng et al., 2020). The application of this technique belongs to the innovation of drilling technology and the improvement of engineering techniques (Al Rbeawi and Tiab, 2011).…”

An OpenMP parallel implementation using a coprocessor for numerical simulation of oil reservoirs

“…To extend the production of unconventional reservoirs, horizontal wells ( Fig. 1) have been used to increase the contact area between reservoir and well (de Souza et al 2014;Biryukov and Kuchuk 2015;Teng and Li 2018;Moradidowlatabad and Jamiolahmady 2018). Horizontal wells are recommended for low reservoir thickness, low-permeability formations and naturally fractured reservoirs.…”