Evaluation of Asymmetric Fractures on Acid Fracturing Well

3rd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Li, Ke^1^2 ; Zhou, Jun^3 ; Yang, Jing^4 ; Zhou, Linbo^3

China National Offshore Oil Corporation Research Institute, Beijing, China^1

State Key Laboratory of Offshore Oil Exploitation, Beijing, China^2

Sinopec Research Institute of Petroleum Engineering, Beijing, China^3

School of Energy Sources, Chengdu University of Technology, Chengdu, China^4

关键词: Basic principles;    Fracture geometries;    Fracture parameter;    Fracturing design;    Injection pressures;    Logarithmic curve;    Seepage mechanics;    Well test interpretation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/300/2/022085/pdf
DOI  :  10.1088/1755-1315/300/2/022085

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Because of the heterogeneity of acid corrosion, acid fracturing effect is difficult to assess, and how to make use of acid fracturing construction data to guide fracturing design have always been concerned by scientific researchers. Several shutdown processes have been existed in acid fracturing construction, this is similar to the process of injection and falloff well test. In this paper, basic principle of seepage mechanics and injection pressure drop well test interpretation theory are used to establish injection pressure drop mathematical model with considering the influences of asymmetric fractures. The influence of asymmetric fracture geometry and fracture number on pressure double logarithmic curve have been analyzed. The method presented in this paper to analyze the pressure drop data can better explain the fracture parameters and general effect of acid fracturing construction.