BHP has been given the green light by the national regulator for the drilling of the Crosby-3H1 well at the Pyrenees development offshore Western Australia.
The National Offshore Petroleum Safety and Environmental Management Authority (NOPSEMA) approved BHP’s environment plan, which outlines the company’s intention to undertake riderless light well intervention (LWI) at the well.
The Pyrenees development recovers crude production from fields located in both the WA-42-L and neighbouring WA-43-L, using the Pyrenees venture floating production, storage and offtake facility (FPSO).
Crosby-3H1 is a dual-lateral well originally drilled in 2010 with a second lateral drilled in November 2015. Crosby-3H1 requires artificial gas lift operation in order to produce from the well.
To reduce excessive water production from the dual-lateral well, BHP has proposed to isolate the water producing lower lateral to enable the remaining upper lateral to increase the oil production performance.
BHP outlined in its EP that the LWI activities will be short in duration, with the LWI vessel expected to be on location for up to 14 days, depending on weather conditions, between September 2020 and January 2021.
The Pyrenees project is 45 kilometres off the coast of Exmouth, Western Australia, in the Carnarvon Basin.
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