Oil flows from AWE’s Pateke field (New Zealand)

AWE Limited has said that it has completed the subsea tie-back and installation project to connect the Pateke-4H development well to the Tui area oil fields gathering system in New Zealand. Oil production has begun.

The Pateke-4H well has been brought onto production and flow testing is under way to determine the optimal well settings. The well recorded an initial unstabilised flow rate of 34,000 bopd at 67% choke with a 48% water cut, which is in line with field modelling.

Looking ahead, AWE says, it is planned to test various facility parameters, including choke settings, before establishing a much lower stabilised flow rate for long-term production. It is forecast that oil production from the well will then decline relative to the increasing water cut in the well.

AWE Managing Director, Bruce Clement, said that the Pateke-4H project was completed with no safety or environmental incidents and initial production from the well is in line with expectations.

“The Pateke-4H development well is performing as expected and will boost near-term production and cash flow without additional operating costs.

“The successful tie-back and commissioning of the Pateke-4H well represents the final stage of development for the Tui project, which has been a cornerstone production asset for AWE for almost a decade,” Clement said.

The Pateke-4H subsea tie-back and installation project started on 5 March 2015. The project involved the installation of 1,312 metres of flexible flow line, a gas lift umbilical and production manifold, integrated controls and ancillary equipment in water depths of about 124 metres.

The Tui area oil fields and the Floating Production Storage and Offloading (FPSO) vessel, the “Umuroa”, were shut in for the duration of the tie-back project. During the shut-in period, a planned program of facility inspections and maintenance was conducted. The Tui area oil fields comprises the Tui, Amokura and Pateke fields which are located approximately 50 kilometres off the coast of Taranaki, New Zealand, in PMP38158. Production from each field is fed into the Tui field gathering system and then into the FPSO vessel, the “Umuroa”.

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