Effect of Fracture Parameters on Desorption Properties of Shales

Abstract:

Horizontal well and hydraulic fracturing are the main technologies for shale gas development. The desorption properties of shales are very important data for shale gas development. In order to simulate the desorption process in shales with horizontal well and fractures, a new method for shale sample preparation and a new experimental system for the evaluation were developed. The effect of the number and half-length of fractures on the desorption rate and the desorption equilibrium time were measured when the system pressure drops from 9.2MPa to 7MPa. Experiments show that the initial desorption rate increases and the equilibrium time decreases with the increase of the number and half-length of fractures. Within the scope of the experiments, the number of fractures is more important than the half-length of fractures for the desorption rate.

• Periodical: Applied Mechanics and Materials (Volumes 397-400)
• Pages: 252-256
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.397-400.252
• Online since: September 2013
• Authors: Kun Kun Fan*, Ren Yuan Sun, Zi Chao Ma, Yun Fei Zhang, Yan Wei, Zhao Zhao Zhang
• Keywords: Desorption, Fracture Parameters, Non-Conventional Gas, Shales

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