Study of horizontal well fracture initiation pressure based on nonlinear constraint model

被引：0

作者：

机构：

[1] Key Laboratory of Petroleum Engineering of the Ministry of Education, Department of Oil-Gas Development Engineering, Collage of Petroleum Engineering, China University of Petroleum-Beijing, Beijing, P.O. Box 102249

[2] Department of Oil-Field Development, Collage of Petroleum Engineering, Xian Shiyou University, Xian, Box 710065

来源：

Wang, L. | 1984年 / Asian Network for Scientific Information卷 / 13期

关键词：

Fracture initiation pressure; Horizontal well; Hydraulic fracturing; Nonlinear constraint model; Optimization theory;

D O I：

10.3923/jas.2013.1984.1987

中图分类号：

学科分类号：

摘要：

Hydraulic fracturing of horizontal well has been a principal stimulation treatment for low permeable reservoirs. Accurately calculate Fracture Initiation Pressure (FIP) is a key factor to the success of hydraulic fracturing operation for horizontal well. Conventional FIP solution model of horizontal well utilize well-bore pressure increment as the iteration step. Therefore, it has disadvantages such as slow convergence speed and lower computational precision. In this paper, a new optimization solution model is proposed for horizontal well FIP calculation. The model transforms the solving process of FIP into the searching problem of minimum objective function under nonlinear constraint condition. Optimization calculation equations for FIP for horizontal well under open hole and perforation completion is established based on the model. The solving flow chart by using outer-point-penalty function method is devised. Verification of the model is completed through calculation of an actual horizontal well data. The results show that proposed model has superiority of faster computational convergence speed and higher calculation precision than the convention models. © 2013 Asian Network for Scientific Information.

引用

页码：1984 / 1987

页数：3

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