Oil and Gas News

Triangle finalises Cliff Head maintenance

Cliff head oil field and platform

Triangle Energy has resumed production at the Cliff Head 7 (CH-7) well in the Perth Basin, Western Australia.

Operations have returned after a workover program, including the installation of a new, downhole electric submersible pump (ESP), was finished ahead of schedule and under budget.

The company advised that performance testing and verification is underway, however production association with the CH-7 well is expected to stabilise at 237 barrels of oil per day (bopd), bringing the field total production to 825 bopd.

Following the resumption of production at the well, Triangle’s decision in 2019 to move to the hydraulic workover unit (HWU) alternative system for safe and lower cost operations, ESP design and replacement is revalidated.

In addition, the workover on Cliff Head 6 (CH-6) well has been temporality suspended after initial attempts to retrieve the old ESP were unsuccessful.

The failed ESP had been in production for more than 10 years, with the run life a testament to the operation of the well and the Cliff Head field from the Triangle team in Dongara.

However, the pause in operations has enabled the company to progress with contingency planning without incurring any standby costs.

The target date for resumption of workover activities for CH-6, under the current contracting agreement, will be the first quarter of 2021.

In October, the company begun its workover campaign following the arrival of the hydraulic workover unit from Fremantle.

The successful completion of this work is set to see Cliff Head 6 and 7 return the operation’s production to around 400 bopd, taking total production to approximately 1000 bopd.

This comes after the Cliff Head 6 and 7 wells were shut in June this year due to an electrical submersible pump failure.