Study on Axial Force of Multi-Stage Fracturing String in Horizontal Wells

Hong Qiang Zhang; Bao Kui Gao; Xuan Zhuo Han; Xing Qin; Wei Wang

doi:10.4028/www.scientific.net/AMR.790.381

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 790Study on Axial Force of Multi-Stage Fracturing...

Study on Axial Force of Multi-Stage Fracturing String in Horizontal Wells

Abstract:

In order to investigate packer failures during multi-stage fracturing in horizontal open-hole wells, mechanical model is established according to the working process of multi-stage fracturing. The influence of temperature and pressure changes on packers and tubing string is considered in this model. Case study indicated that force in each packer changes obviously in different fracturing stage; the force on the hanger is large in the whole fracturing process, and it will change direction opposite to the original direction in the last fracturing interval; in a given fracturing interval, the force in the upper packer is much higher than that in the lower packer; due to the restriction of the packers, the axial force distribution of the tubing is not smooth and changes abruptly at packers. Therefore, the pressure bearing capacity of packers should be taken into account during design and operation, and based on which appropriate packers and operation parameters be selected.

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Periodical:

Advanced Materials Research (Volume 790)

Pages:

381-385

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.790.381

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Online since:

September 2013

Authors:

Hong Qiang Zhang, Bao Kui Gao, Xuan Zhuo Han, Xing Qin, Wei Wang

Keywords:

Force, Multi-Stage Fracturing, Packer, String

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