Science & Technology Review >

2016 , Vol. 34 >Issue 23: 51 - 56

DOI: https://doi.org/10.3981/j.issn.1000-7857.2016.23.005

Spescial Issues

On the impact of shale gas development on water resource and environment in Sichuan and Chongqing

  • LU Tingqing ,
  • HU Ming ,
  • LIU Mohan ,
  • DING Chunyan ,
  • WANG Xing
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  • 1. School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, China;
    2. Team 141 of Sichuan Coalfield Geology Bureau, Deyang 618000, China

Received date: 2015-08-16

  Revised date: 2016-05-04

  Online published: 2016-12-28

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Abstract

At present, China has commercially exploited shale gas in a large-scale. However, the shale gas development may bring risks for water resources and environments. By surveying water consumption, sampling and analyzing flowbacks from shale gas drill sites in Sichuan and Chongqing, it is shown that the total water consumption is huge for the shale gas development, i.e., each well consumes about 32000 m3 of water. On the other hand, potential risks of water pollution come from several sections during shale gas development:firstly, fracturing and drilling flowbacks produce water having high salinity, complex components and a variety of heavy metals; secondly, a huge amount of waste fluids and oil-based mud cuttings are produced in the drilling process; thirdly, drilling circulation loss often happens in shale gas development areas where caves, cracks and underground rivers largely exist; and fourthly, constructions of the ground engineering. Besides, storage pools are apt to spill and leak by heavy rain or other factors. Therefore, when shale gas is extracted from Sichuan and Chongqing, constructions, allocation of water resources, and developing treatment technology of flowbacks must be meticulous. It is important to prevent water resources from being consumed excessively and water environment from being polluted in the developing shale gas.

Key words： shale gas development; hydraulic fracturing; oily cuttings; water resource consumption; water environment contamination; Sichuan and Chongqing

Cite this article

LU Tingqing , HU Ming , LIU Mohan , DING Chunyan , WANG Xing . On the impact of shale gas development on water resource and environment in Sichuan and Chongqing[J]. Science & Technology Review, 2016 , 34(23) : 51 -56 . DOI: 10.3981/j.issn.1000-7857.2016.23.005

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