Browsing by Author "Atdayev, Eziz"

Now showing 1 - 2 of 2
  • Thumbnail Image
    ItemOpen Access
    Modelling Hydraulic Fracturing in Tight Reservoirs Using Equivalent Continuum Approach
    (2021-01-29) Atdayev, Eziz; Wong, Ron Chik Kwong; Eaton, David William S.; Davidsen, Jörn; Duncan, Neil A.
    Hydraulic fracturing has transitioned into widespread use over the last few decades. There are a variety of numerical methods available to simulate hydraulic fracturing. However, most current methods require a large number of input parameters, of which the values of some parameters are poorly constrained. This research proposes a new method of modelling the hydraulically fractured region using void-ratio and strain dependent relation to define the permeability of the fractured region. This approach is computationally efficient and reduces the number of input parameters. By implementing this method with an equivalent continuum representation, uncertainties are reduced arising from heterogeneity and anisotropy of the earth materials. The computational efficiency improves modelling performance in stress-sensitive zones such as in the vicinity of the injection well or near faults.
  • Thumbnail Image
    ItemOpen Access
    Recent comprehensive review for extended finite element method (XFEM) based on hydraulic fracturing models for unconventional hydrocarbon reservoirs
    (2020-06-08) Maulianda, Belladonna; Savitri, Cindy D; Prakasan, Aruvin; Atdayev, Eziz; Yan, Twon W; Yong, Yew K; Elrais, Khaled A; Barati, Reza
    Abstract Hydraulic fracturing has been around for several decades since 1860s. It is one of the methods used to recover unconventional gas reservoirs. Hydraulic fracturing design is a challenging task due to the reservoir heterogeneity, complicated geological setting and in situ stress field. Hence, there are plenty of fracture modelling available to simulate the fracture initiation and propagation. The purpose of this paper is to provide a review on hydraulic fracturing modelling based on current hydraulic fracturing literature. Fundamental theory of hydraulic fracturing modelling is elaborated. Effort is made to cover the analytical and numerical modelling, while focusing on eXtended Finite Element Modelling (XFEM).