Simulation model size reduction using volume of investigation by fast marching method

Teng, Bailu

doi:10.1016/j.petrol.2020.107183

Cited by 2 publications

(2 citation statements)

References 14 publications

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“…Ding et al [12] proposed an improved FMM method for calculating the three-dimension traveltime by considering the 26 neighbors of the calculating point. Teng [13] combined the implicit finite difference method with the FMM method to improve the calculating efficiency of numerical simulation. More application of FMM can be found in Sharifi et al [14], Zhang et al [15], Jenkins [16], Iino et al [17], and Ojha et al [18], but FMM has hitherto not been used to determine the control volumes.…”

Section: Introductionmentioning

confidence: 99%

A New Approach for Determining the Control Volumes of Production Wells considering Irregular Well Distribution and Heterogeneous Reservoir Properties

et al. 2021

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The oil and gas fields are commonly developed with a group of production wells. Therefore, it can be essential for the industries to predict the performance of the production wells in order to optimize the development strategies. In practice, it frequently happens that we only hope to study the performance of a single production well. In such cases, it can be time consuming to run the reservoir simulation with the entire reservoir model to study the well performance. Hence, it can be preferred to determine the control volume (or drainage volume) of the target well from the entire reservoir and run the simulation with the small control volume to reduce the simulation cost. However, an irregular layout of the production wells and the heterogeneity of reservoir properties, which can be commonly observed in real field cases, can induce a stringent barrier for one to determine the control volumes. At present, we are still lacking a method to determine the control volumes of the production wells considering well distribution and reservoir heterogeneities. In order to overcome such a barrier, the authors proposed a new approach to divide the entire reservoir into small control volumes on the basis of the fast marching method (FMM). This approach is validated by comparing the simulation outputs of the target well calculated only with the determined control volume to those calculated with the entire reservoir model. The calculated results show that using the control volume that is determined with the proposed method to calculate the well performance can yield results that agree well with the results that are calculated with the entire reservoir model. This indicates that this proposed method is reliable to determine the control volume of the production wells. In addition, the calculated results in this work show that changing fracture length exerts a slight influence on the control volumes if the length of all fractures is increased, whereas, if only one of the fracture lengths is increased, the control volume of the corresponding well will be significantly increased. The number of the production wells and the distribution of the production well can noticeably influence the control volumes of the production wells. The findings of this study can help for optimizing the well spacing, estimating the ultimate recovery, and reducing the computational cost.

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Section: Introductionmentioning

confidence: 99%

A New Approach for Determining the Control Volumes of Production Wells considering Irregular Well Distribution and Heterogeneous Reservoir Properties

et al. 2021

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“…Next, DTOF is used as a spatial coordinate and the governing equations can be mapped onto the 1D DTOF coordinate for discretisation and simulation (Zhang et al, 2016). FMM has been applied for numerical well testing, geological model ranking, reservoir simulation and automated history matching (Xie et al, 2015;Yousefzadeh et al, 2021;Teng, 2020). FMM can be regarded as a generalisation of the streamline method as the DTOF contours are perpendicular to streamlines, and solving the governing equations on the DTOF coordinate is akin to solving along a group of streamlines.…”

Section: Introductionmentioning

confidence: 99%

A Multi-Stencil Fast Marching Method with Path Correction for Efficient Reservoir Simulation and Automated History Matching

Zhang¹,

Guo²,

Zhang³

et al. 2021

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The efficiency of reservoir simulation is important for automated history matching (AHM) and production optimization, etc. The fast marching marching method (FMM) has been used for efficient reservoir simulation. FMM can be regarded as a generalised streamline method but without the need to construct streamlines. In FMM reservoir simulation, the Eikonal equation for the diffusive time-of-flight (DTOF) is solved by FMM and then the governing equations are computed on the 1D DTOF coordinate. Standard FMM solves the Eikonal equation using a 4-stencil algorithm on 2D Cartesian grids, ignoring the diagonal neighbouring cells. In the current study, we build a 8-stencil algorithm considering all neighbouring cells, and use local analytical propagation speeds. In addition, a local path-correction coefficient is introduced to further increase the accuracy of DTOF solution. Next, a discretisation scheme is built on the 1D DTOF coordinate for efficient reservoir simulation. The algorithm is validated on homogeneous and heterogeneous test cases,

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Simulation model size reduction using volume of investigation by fast marching method

Cited by 2 publications

References 14 publications

A New Approach for Determining the Control Volumes of Production Wells considering Irregular Well Distribution and Heterogeneous Reservoir Properties

A New Approach for Determining the Control Volumes of Production Wells considering Irregular Well Distribution and Heterogeneous Reservoir Properties

A Multi-Stencil Fast Marching Method with Path Correction for Efficient Reservoir Simulation and Automated History Matching

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