The National Offshore Petroleum Safety and Environmental Management Authority (NOPSEMA) are reviewing Triangle Energy‘s five-year update to its plans for the offshore component of Cliff Head oil field.
This five-year update to the Cliff Head Operations environment plan (EP), considers only the offshore sections of the development – particularly those which occur beyond the Commonwealth-State boundaries.
These include:
- The Cliff Head Alpha (CHA) offshore wellhead platform: an unmanned well head platform to accommodate the well heads and support equipment;
- Eight well heads with the current arrangement of five production wells with electrical submersible pumps (ESPs) to enable artificial lifting of the produced fluid (i.e. crude oil and water), and three water injection wells;
- An insulated subsea production pipeline, which transports the produced fluids from CHA to the onshore Arrowsmith Stabilisation Plant (ASP); and
- An insulated subsea water injection pipeline from ASP to the three injection wells at CHA.
In addition to activities associated with the ongoing operations of the facility, the EP also covers pipeline inspection, maintenance, and repair activities.
The Cliff Head field offshore operations are anticipated to transition to the non-production phase within the five-year period covered by the EP. Cessation of production is currently targeted for mid 2025.
The Cliff Head oil field is located off the Western Australian coast within Production Licence WA-31-L.
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