Tubridgi field in Australia to be redeveloped as gas storage

The DBP Development Group, 100% owned by DUET Group, is planning to redevelop the depleted Tubridgi gas field, onshore Carnarvon basin of Western Australia, as a gas storage facility with a capacity to hold 42 petajoules of gas.

Tubridgi is about 30 km from the town of Onslow close to Chevron Corp.’s Wheatstone and BHP Billiton Ltd.’s Macedon domestic gas production facilities. It is also connected to the Dampier-Bunbury natural gas trunkline.

The new Tubridgi facility will be the largest gas storage in Western Australia capable of supporting daily injection and withdrawal rates of about 50 terajoules/day.

DBP has already signed up CITIC Pacific Mining Management Ltd., operator of the Sino iron magnetite project at Cape Preston 100-km southwest of Karratha, as a foundation customer under a 10-year agreement with options for a further 5 years. Further customers are being sought.

The facility is scheduled to be operational by June next year. It will cost an estimated $69 million (Aus.) to build.

Tubridgi field, originally discovered in 1981 by Otter Exploration, produced 69 petajoules during its lifetime between 1991 and 2004 from 21 wells.

The reservoir is at shallow depth of 550 m, so required injection pressures are low. Porosity and permeability are described as excellent and reservoir pressure is supported by an active aquifer that will ensure virtually constant rates of gas deliverability when the project is brought on stream.

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