Nexus says Libra, Crux fields separate structures

The successful Libra-1 wildcat drilled in Browse basin permit AC/P41 off Western Australia has confirmed that Libra field is a separate structure from nearby Crux field, said the permit's partners.

Jan. 6, 2009

Rick Wilkinson
OGJ Correspondent

MELBOURNE, Jan. 6 -- The successful Libra-1 wildcat drilled in Browse basin permit AC/P41 off Western Australia has confirmed that Libra field is a separate structure from nearby Crux field, said the permit's partners.

Royal Dutch Shell PLC holds 65% interest in the permit; Mitsui holds 20% and Nexus Energy, 15%.

Logging and pressure data indicate that Libra-1 intersected a 206-m gross gas column in a better than predicted reservoir section on the way to a total depth of 3,918 m.

The gas-water contact in the well is shallower than that encountered in Crux as well, also suggesting that Libra is a separate accumulation.

Nexus says the find has boosted confidence in the prospectivity of the Greater Crux region and provides additional incentive for follow-up drilling at the adjacent Auriga and Caelum prospects.

Libra-1 was drilled by the Ocean Epoch semisubmersible and is now plugged and abandoned as planned.