Qualla: Montara Oil Spill

Montara Oil Spill: Introduction

Sat, 28 Mar 2026 00:00:00 GMT

On 21 August 2009, the Montara Wellhead platform in the Timor Sea stopped being a controlled oil production facility and became something else: an uncontrolled source of oil and gas pouring into one of the world's most biologically productive seas. The leak would last 74 days. Four attempts to plug it would fail. A fire would break out on the drilling rig in November. And the slick — spreading across 6,000 square kilometres at its peak — would become the centre of a dispute between Australia and Indonesia that is not entirely resolved even now.

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Montara Oil Spill: The Well That Would Not Stop

Sat, 28 Mar 2026 00:00:00 GMT

The Montara oil field sits in the Timor Sea approximately 690 kilometres southwest of Darwin, in Australian waters operated by PTTEP Australasia — a subsidiary of a Thai state petroleum company. The wellhead platform was in approximately 250 feet of water, the hole itself drilled...

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Montara Oil Spill: The Reach of the Slick

Sat, 28 Mar 2026 00:00:00 GMT

Within two weeks of the initial blowout, the Australian Maritime Safety Authority reported that the slick had spread over 6,000 square kilometres of ocean and was moving closer to the Western Australian coast, sitting 170 kilometres from shore. The oil was killing marine life acr...

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Montara Oil Spill: The Political Aftermath

Sat, 28 Mar 2026 00:00:00 GMT

The Montara spill exposed gaps in Australian offshore safety regulation that a subsequent government inquiry documented in detail. The West Australian government, environmental groups including WWF-Australia, and Australian Greens senators argued loudly that the true scale of the...

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Montara Oil Spill: A Remote Sea, a Global Question

Sat, 28 Mar 2026 00:00:00 GMT

The Timor Sea is not a high-traffic area. The spill did not wash up on tourist beaches or close major ports. Its victims were fish, seabirds, marine mammals, and the Indonesian fishermen whose income depended on the health of waters they had worked for generations. These are the ...

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