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Advances in Materials Science and Engineering
Volume 2015 (2015), Article ID 521480, 5 pages
http://dx.doi.org/10.1155/2015/521480
Research Article

The Experimental Investigation of Hydraulic Fracture Propagation Characteristics in Glutenite Formation

1State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China
2Production Technology Research Institute, Shengli Oilfield, SINOPEC, Dongying 257000, China

Received 13 June 2014; Revised 12 November 2014; Accepted 15 November 2014

Academic Editor: Guocheng Lv

Copyright © 2015 Zhihong Zhao et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Hydraulic fracture propagation characteristics in glutenite formation are studied by a series of servo-controlled triaxial large-scale fracturing experiments. The experimental results show that the fractures extend along the gravel and sandstone cementing face, and fracture geometry in glutenite formation is complex, which is similar to network fractures. The phenomenon of the gravel being split has not been observed. In the process of the fracture extension, the extension pressure is fluctuating, and the degree of fluctuation is more drastic with the gravel diameter increase. This paper suggests that using large rate and multislug technology would increase the flow ability of the carrying fluid. The conclusions are significant to hydraulic fracturing in glutenite formation.