Dril-Quip has successfully installed a fourth subsea tree on Premier Oil’s Catcher (32/21) development in the U.K. Central North Sea in a water depth of 91 m.

The company has been manufacturing the subsea trees and controls for Premier Oil since it was awarded the contract in early 2014.

The scope of the order includes 18 subsea wellhead systems, 11 subsea production trees and seven subsea water injection trees. Also included are the controls equipment for the trees and manifold and topside mounted subsea equipment for installation on the Catcher Area FPSO unit.

Dril-Quip also has supplied the installation workover control systems and completion riser used to install the subsea production systems.

The first four trees consist of two production and two injection systems, and fill up a 2 by 2 slot template. The trees are shut in awaiting the installation of a manifold that has a Dril-Quip subsea controls module on it.

When the manifold is installed and the flowline hooked up to an FPSO unit, the first of the subsea wellhead systems will be placed online.

Meanwhile, fabrication of the FPSO hull and topsides is ongoing in Asia and the sail-away date of the FPSO unit from Singapore for a 2017 field startup currently remains on schedule.

The first major FPSO hull section was successfully delivered in December to the yard in Japan from South Korea. Topsides module and turret construction continue to progress well in Batam and Singapore. The FPSO contractor currently plans the commencement of hull and integration work in Singapore from mid-year 2016.