Browsing by Author "Maulianda, Belladonna"
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- ItemOpen AccessIntegrated approach for fracture characterization of hydraulically stimulated volume in tight gas reservoir(2019-04-17) Maulianda, Belladonna; Prakasan, Aruvin; Wong, Ron C; Eaton, David; Gates, Ian DAbstract Hydraulic fracturing is conducted on unconventional reservoir which has very low permeability. It increases the production from unconventional oil and gas reservoirs through the creation of a connected stimulated rock volume (SRV) with higher conductivity. The permeability and the SRVs dimension are important parameters which increase the performance of hydraulically fractured wells. Microseismic monitoring is used to estimate the seismically stimulated volume within the reservoir, which can provide a proxy for the SRV. Finite element analysis was used in this study in the determination of SRV characteristics by utilizing field data from a horizontal well hydraulic-fracturing program in the Hoadley Field, Alberta, Canada. Coupled fluid-flow geomechanics finite element (FE) model was used. The permeability of the SRV is altered to match the field bottom-hole pressure. The pressure drop and in situ stress changes within the SRV are determined through the matching of the FE model. Fracture aperture, number and spacing in the SRV are then inferred from the estimated reservoir parameters by using a semi-analytical approach.
- ItemOpen AccessOn Hydraulic Fracturing of Tight Gas Reservoir Rock(2016) Maulianda, Belladonna; Gates, Ian; Wong, Ron; Mehta, Sudarshan; Moore, Robert; Lines, Laurence; Hawkes, ChristopherProduction of shale and tight gas resources is increasing which is helping to counterbalance the conventional gas resource production decline. In 2014, shale and tight gas were 4% and 47% of total Canadian natural gas production, respectively. By 2035, the National Energy Board forecasts shale and tight gas production together will represent 90% of Canada’s natural gas productions. In Canada, shale and tight gas production activities are located mainly in Western Canada Sedimentary Basin (WCSB). The tight gas Glauconitic Formation in the Hoadley Field in Alberta, Canada requires hydraulic fracturing of horizontal well completions because of its low permeability of 0.07 mD. Fracture network drainage volume and enhanced permeability created by the hydraulic fracture and the natural fracture interaction are the major enabler of commercial production. The research documented in this thesis investigates the characteristics of the fracture network or stimulated rock volume (SRV) caused by hydraulic fracturing. Specifically, the dimensions of SRV, permeability, pore pressure, and in-situ stresses are examined during hydraulic fracturing and production. Even though this topic has been examined since the early 2000s, the results provide new techniques to determine SRV properties. Three different approaches were investigated. The first handles the impact of SRV dimensions and Young’s modulus on the SRV effective permeability during hydraulic fracturing by using three-dimensional finite element analysis including an investigation of fracture aperture and spacing within the SRV using a new semi-analytical approach. The second investigates the impact of rock mechanical properties and injected volume during hydraulic fracturing on SRV dimensions using a new analytical model. The third explores a new nonlinear partial differential equation together with rate transient analysis to evaluate how the SRV evolves versus distance and time with a history match of the gas flow rate profile. The results demonstrate that the dimensions and characteristics of the hydraulic fracture network can be estimated for the Hoadley Field.
- ItemOpen AccessRecent 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, RezaAbstract 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).