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Neptune platform in the Gulf of Mexico

Gulf of Mexico

We operate two fields in the US waters of Gulf of Mexico – Shenzi (44 per cent interest) and Neptune (35 per cent interest). We hold non-operating interests in two other fields – Atlantis (44 per cent interest) and Mad Dog (23.9 per cent interest).

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All our producing fields are located between 155 and 210 kilometres offshore from the US state of Louisiana. We also own 25 per cent and 22 per cent, respectively, of the companies that own and operate the Caesar oil pipeline and the Cleopatra gas pipeline. These pipelines transport oil and gas from the Green Canyon area, where our US Gulf of Mexico fields are located, to connecting pipelines that transport product onshore.

Key developments during FY2019

Mad Dog Phase 2, located in the Green Canyon area in the deepwater Gulf of Mexico, is an extension of the existing Mad Dog field. The Mad Dog Phase 2 project is in response to the successful Mad Dog South appraisal well, which confirmed significant hydrocarbons in the southern portion of this field.

The project includes a new floating production facility with the capacity to produce up to 140,000 gross barrels of crude oil per day from up to 14 production wells. Production is expected to begin in CY2022.

On 13 February 2019, the BHP Board approved the development of the Atlantis Phase 3 project in the US Gulf of Mexico. The project includes a subsea tie back of eight new production wells and is expected to increase production by an estimated 38,000 gross barrels of oil equivalent per day at its peak.

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