Kupe field operator says it will be able to maintain full production through 2023.
Vector is continuing with the prosecution against the company that's in liquidation.
In a runaway property market, Fletcher paid just $265k for a site it put 10 homes on in Christchurch.
Fletcher Building owned Winstone Wallboards, the dominant player in the plasterboard market, is shutting down supply to home builders as its forward orders stretch to three months.