Hydraulic Fracture Geometry Inversion and Analysis of Influencing Factors Based on ABAQUS

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Tang, Shukai^1 ; Li, Mingzhong^1 ; Qi, Minhui^1

School of Petroleum Engineering, China University of Petroleum, Qingdao, Shandong, China^1

关键词: Fluid-solid coupling;    Fracture initiation pressures;    Fracture propagation;    Injection pressures;    Maximum and minimum principal stress;    Maximum principal stress;    Reservoir parameters;    Three-dimensional model;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/3/032013/pdf
DOI  :  10.1088/1755-1315/170/3/032013

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Based on the finite element software ABAQUS, the three-dimensional model of fluid-solid coupling hydrofracture expansion is established, and the hydraulic fractures are retrieved according to reservoir parameters. The effects on fracture propagation are analysed, including the injection pressure, the frac fluid viscosity, the maximum and minimum principal stress and Young's modulus of rock on fracture propagation. The results show that the maximum length and width of the fracture increase gradually with the increase of the injection pressure, but decrease with the increase of the elastic modulus. With the increase of the frac fluid viscosity, the maximum fracture length and width show two opposite trends. The maximum fracture length decreases with the increase of the viscosity, but the decreasing rate slows down gradually, showing the decreasing trend of the exponential function. However, with the increase of the viscosity, the maximum fracture width increases and the initiation pressure is not affected. When the minimum principal stress increases gradually, the maximum fracture length and width reduced gradually, and the initiation pressure also increases linearly, but the change of the maximum principal stress has no effect on the fracture initiation pressure.