Hydraulic fracturing and its effect on gas extraction and coal and gas outburst prevention in a protective layer: a case study in China
by Liang Cheng; Zhaolong Ge; Jiufu Chen; Lishuang Zou; Yugang Cheng; Songqiang Xiao
International Journal of Oil, Gas and Coal Technology (IJOGCT), Vol. 23, No. 4, 2020

Abstract: Gas extraction to eliminate coal and gas outburst risk is important to ensure safe and efficient coal production for protective layer with coal and gas outburst risk. In this paper, Tonghua coal mine, China, is taken as an example to demonstrate the effects of gas disasters prevention using hydraulic fracturing (HF). The results show that: 1) HF can effectively improve the efficiency of gas extraction. The gas production increased by 62.12% with the borehole number of gas pre-drainage decreased by 45.66%, respectively; 2) efficient gas extraction reduces the occurrence of mine gas safety violations significantly with the gas accidents decreased by 89.3%; 3) the production efficiency of protective layer increased significantly with coal production increased by 49.5%; 4) gas was used for power generation instead of being vented to the atmosphere. This study could be used as a valuable example for other coal deposits being mined under similar geological conditions. [Received: December 4, 2017; Accepted: May 16, 2018]

Online publication date: Wed, 01-Apr-2020

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Oil, Gas and Coal Technology (IJOGCT):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com