A New Model for Predicting Productivity and Application for Fractured Horizontal Wells

Abstract:

Due to the differences of stress and physical property in the pay zone, the fractured horizontal well may be different in length and azimuth angle. Furthermore, because of the mutual disturbance among fractures, the accurate prediction of production of fractured horizontal wells become more complicated. This paper presents a new model to predict the production of the fractured horizontal wells by considering the effects of fracture number, fracture length, fracture interval, fracture symmetry, azimuth angle and conductivity. Compared with the numerical simulation, this model needs less parameter and calculating time, and is easy to be applied to the designs of segmentation fracturing in horizontal wells. The model in this paper has been applied to the optimizing designs of hydraulic fracturing for two horizontal wells in North China oilfield and the predicted results agree with the actual production well.

• Periodical: Advanced Materials Research (Volumes 524-527)
• Pages: 1310-1313
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.524-527.1310
• Online since: May 2012
• Authors: Zhi Hong Zhao, Jian Chun Guo, Fan Hui Zeng
• Keywords: Fracturing, Multiple Fractures, Mutual Interference, Optimizing Design, Production Model

References

[1] Gao H H,Qu Z Q, Zhao M. Journal of Southwest Petroleum University, Vol. 30, issue 4, (2008),pp.73-76 (in Chinese)

[2] Olivier L, Peter H. Optimum development of a thin box-Shaped reservoir with multiply fractured horizontal wells. SPE international Conference on horizontal well technology held in Calgary, Alberta,Canada,1-4 November(1998)

DOI: 10.2118/50420-ms

[3] Guo B,Schechter D.S..A simple and rigorous IPR equation for vertical and horizontal wells intersecting long fractures. JCPT. Vol.38,issue7(1999),pp.121-126

DOI: 10.2118/99-07-05

[4] Ding Y P, Wang X D, Special Oil & Gas Reservoirs.Vol.15, issue2(2008),pp.64-68 (in Chinese)