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  • Apr 17, 2014
  • Updated: 1:01am
Infographics ENVIRONMENT

Tapping into China: The companies forcing out the gas tucked deep inside the earth’s layers

PUBLISHED : Saturday, 23 November, 2013, 4:56am
UPDATED : Tuesday, 26 November, 2013, 12:08pm

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As conventional natural gas becomes harder to extract, energy companies are now tapping so-called unconventional reserves – shale, coal bed methane, and a product called tight gas – that cling to rock, sandstones and coal. Companies use a variety of techniques to force out the gas tucked deep inside the earth’s layers.