The Influence of Stimulated Reservoir Volume in Dense Reservoir on the Fracturing Effect

2019 2nd International Conference of Green Buildings and Environmental Management

生态环境科学

Wang, Huzhen^1^2^3 ; Zhou, Zhijun^1^2^3 ; Diao, Changjun^4 ; Li, Chunmei^5

Department of Petroleum Engineering, Northeast Petroleum University, Daqing, Heilongjiang

163318, China^1

Key Laboratory of Reservoir Stimulation, CNPC, Daqing, Heilongjiang

163318, China^2

Key Laboratory of Education Ministry for Enhanced Oil Recovery, Northeast Petroleum University, Daqing, Heilongjiang

163318, China^3

Research Institute of Exploration and Development, Xinjiang Oilfield Company, Karamay, Xinjiang

834000, China^4

No.2 Oil Recovery Plant, Xinjiang Oilfield Company, Karamay, Xinjiang

834008, China^5

关键词: Artificial fracture;    Cumulative oil production;    Finite element theories;    Fracture half-length;    Numerical simulation studies;    Oil-water two phase flows;    Simulation calculation;    Stimulated reservoir volumes;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/310/3/032005/pdf
DOI  :  10.1088/1755-1315/310/3/032005

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Based on the finite element theory, the mathematical model of oil-water two-phase flow is established. Applying the mixed element finite element method to numerical simulation studies for complex artificial fracture which after volume fracturing of horizontal well in dense reservoir, using arbitrary triangle elements to describe the formation, line elements to describe the artificial fracture. For the convenience of simulation calculation, the fracture network is processed into two parts of the main fracture and the high permeability stimulated region. The bandwidth of stimulated region is determined by results of the micro seismic monitoring; the permeability is determined by single well history matching. Aiming at the problem of volume fracturing of horizontal well in dense reservoir, in the way of natural energy exploitation, with the single well as the research object, according to different calculation schemes to carry out stimulated reservoir volume(SRV) calculation, to study the influence of the SRV on fracturing effect. Research results show that under the condition of natural energy, when the fracture half-length is unchanged, with the increasing of the transformation segment number, the SRV increases, the cumulative oil production increased. However, the increasing of oil production is smaller gradually, so there is an optimal SRV. Under the given conditions, when the fracture half-length is 240m, horizontal well length is 600m, 800m and 1000m, 1200m, the optimal SRV respectively are 350×104m3 500×104m3 600×104m3 750×104m3