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BassGas Operations

Activity type Operation of a facility for the recovery or processing of petroleum
Activity subtypes Operation of a petroleum pipeline
Lifecycle Classification Operation & Production
Submitted by Lattice Energy Limited
Submission date 30 May, 2014
Subtype Revision
Decision date 07 October, 2014
RMS ID 2769
Status Finalised
Outcome Accepted
Link to previously accepted EP 1780 - BassGas Operations

Level 15
150 Lonsdale Street
+61 3 9206 8360

Location map (click to enlarge)
Location map - Activity: BassGas Offshore (refer to description)

Origin Energy Resources Limited (Origin) is the operator of the BassGas Project, which produces gas and liquids from the Yolla gas field, located 147 km south of Kilcunda in Bass Strait (Figure 1-1).  The Yolla gas field lies in 80 m of water and is serviced by the Yolla A Offshore Platform. An undersea pipeline transports the gas and liquids from the platform to the Victorian mainland via a coastline crossing near Kilcunda. The pipeline terminates at the Lang Lang Gas Plan (LLGP) where gas is processed prior to distribution to the Victorian gas network. Commercial production of gas started in June 2006.
The BassGas offshore facilities incorporate:

Two producing wells, Yolla-3 and Yolla-4, producing gas and condensate from the Yolla gas field. Two further wells Yolla 5 and Yolla 6 are yet to be drilled;

Yolla A offshore production platform, located in 80 m water depth, which supports the wellheads and the topsides facilities required to cool and dehydrate the gas and condensate for export to shore;

A subsea raw gas pipeline system consisting of a 147 km, 350mm diameter offshore production pipeline from the Yolla-A Platform to the shore crossing near the Kilcunda.

The offshore facilities operate 24 hrs a day 365 days a year to supply gas to the onshore facilities and there is a range of equipment and safety devices that support these operations.  As such there is an ongoing program of maintenance, and inspection activities associated with the safe ongoing operation of the field.
Note: This information has been extracted from the EP Summary. Please refer to the attached EP Summary for more information.

Other Details
Locations Gippsland
Commonwealth waters adjacent to Tasmania
Titles (or other instruments) T/L1
Current Documents (Finalised)
EP Document

Location map