Jadestone replaces Montara umbilicals

Jadestone Energy has replaced subsea umbilical cables at its Montara field offshore Australia, a move that should provide reliable operations for the remaining life of the field.

The independent oil and gas production company acquired the Montara field from PTTEP in September 2018. 

“The umbilical cables are an essential part of the control system of the Montara complex subsea wells, providing electrical power and control signals to the subsea well-heads. The replacement umbilical is expected to provide reliable operations for the remaining life of the field. This project was identified by the previous operator PTTEP as a high priority, however, the work was deferred until operatorship was transferred. Jadestone’s operating and engineering team was able to successfully complete this work on budget and without incident,” Jadestone said Thursday.

Jadestone installed the replacement umbilical cables using the DOF Subsea vessel Skandi Hercules, which was mobilized in Singapore on August 19, 2019, and completed work infield at Montara on September 22, 2019.

The Montara offshore field is is located in the Timor Sea off Australia some 690 kilometers west of Darwin. It comprises three separate fields which are Montara, Skua, and Swift/Swallow, produced through a centralized FPSO, the Montara Venture.

Paul Blakeley, President and CEO said: “I’m pleased to have completed this major capital project as the operator of Montara, safely, and on budget. Early on, we recognized the need to replace the control link to the Montara subsea wells, and this was done as soon as possible, following acceptance of Jadestone’s safety case for Montara. I think of this as a one-off maintenance project, and having it completed now will provide greater confidence in our ability to deliver guidance volumes from Montara.”

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