44% of wells leaking at Australian gas field

By Will Cottrell

A study of a gas field in Queensland, Australia has found 44% of gas wells leaking (see p4 of this pdf). The report adds to a growing body of evidence suggesting that gas drilling inevitably leads to water contamination as gas escapes from boreholes.

The study, conducted in the Tara, Queensland field examined 56 of the field’s wells. 26 were found to have leaks. See below for aerial footage of the Tara field –

Tara is a Coal Bed Methane (CBM) gas field (it’s called Coal Seam Gas in Australia). CBM uses techniques similar to hydraulic fracturing but in layers of coal, rather than shale rock which lie deeper underground. Australian CBM operator Dart Energy has just applied to drill a third well at its site near Airth, Scotland.

Australia is not the only country to suffer leaking wells. A Canadian study found more than 17600 oil and gas wells leaking nationwide. Watson and Bachu (Society of Petroleum Engineers SPE 106817 – 2009) surveyed 352,000 oil and gas wells and found 5% of wells had gas or oil outside the central borehole.

In 2003 Gas Service Company Slumberger found 60% of offshore gas wells leaking within 30 years of being drilled.

In 1992 the US EPA estimated that of 1.2 million abandoned oil and gas wells in the US,  200,000 were leaking, a 16.7% failure rate.

Little surprise that both Duke University and the US Environmental Protection Agency have correlated gas in water with proximity to fracking sites.

The industry and its apologists like to claim that careful regulation will ensure wells don’t leak. Yet with hundreds of thousands of wells currently leaking worldwide these claims are unlikely to inspire confidence.

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17 Responses to 44% of wells leaking at Australian gas field

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  13. Gary Kleiman says:

    Talk about stupidity, this must be the age of the lemming.

  14. Pingback: Gas Wells Leak – Even Upside Down – in Australia « No Fracking Way

  15. chiptex says:

    Under the proper conditions the well bore serves as a pathway for released methane to travel up into groundwater.

  16. Pingback: Notorious gas driller moves to Scotland | What The Frack?

  17. j gordon says:

    If the above isn’t enough evidence and proof that ‘Fracking’ will destroy our environment in Sussex and the rest of the UK, then please look at the following link to see what’s happening just across the channel, in Germany:- http://frack-off.org.uk/fracken-sie-deutsch/ where people’s water has been seriously contaminated resulting in increased outbreaks of cancer among residents living nearby. It beggars belief that in spite of all the evidence of contamination caused by hydraulic fracturing, the UK Government (and others in the EU and worldwide) insist on introducing this destructive industry instead of investing in Renewables which would stimulate growth by creating thousands of jobs and contribute greatly to resolving our energy and climate change crisis. France, Holland and Bulgaria have banned Fracking, why shouldn’t we ?

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