Yolla Gas Field

Summary Information

• Operator: Beach Energy
• Country: Australia
• Location: Bass Strait
• Production start: 2006
• Partners: Beach Energy - 53.75%, AWE Limited 35%, Prize Petroleum International 11.25%
• Type: Gas
• Estimated Reserves:
• Production Volume:

Description

• Also known as the BassGas Project
• It consists of an offshore production platform a 147 kilometre, 350-millimetre subsea pipeline a 32 kilometre, 350-millimetre onshore pipeline and a 75MMSCFD onshore gas plant near Lang Lang
• The 8,000 tonne Yolla A offshore platform measures 50 x 50 metres and stands 120 meters high.
• The Mid Life Enhancement project, which was started in 2011, involved upgrading Yolla from an unmanned to a manned platform and installing export compression and condensate pumping modules
• The Trefoil gas field is located 38 km east of the Yolla Platform. The development of the Trefoil resources through the existing Yolla Platform would extend the asset life by approximately 10 years, increase recovery from the Yolla field and defer abandonment of the Yolla Platform and Lang Lang Gas Plant.

Contractors

• Clough Limited:
  • EPC of the offshore production platform; 147 kilometre, 350-millimetre subsea pipeline; 32 kilometre, 350-millimetre onshore pipeline and associated smaller pipelines; and the 75MMSCFD onshore gas plant near Lang Lang
• Seadrill: Drilling of Yolla-5 and Yolla-6
• Process Group: Propane H2S & Mercury Removal Unit

Trefoil Project

• Wood
  • FEED services for both the platform topside modifications, and the subsea and pipeline system

History

• 1997 - Santos acquires a 27.1385% interest
• 2002 - EPC contract awarded
• 2006 - Production started
• 2011 - Production temporarily stopped for the Mid Life Enhancement project
• 2011 - AWE sells a stake in the project to Toyota Tsusho Gas
• 2012 - Production resumed following upgrades
• 2014 - Drilling programme for Yolla 5 & 6 started
• 2014 - Installation of export compression and condensate pumping modules
• 2015 - Yolla 5 & 6 spudded
• 2018 - Bridge petroleum acquired Lattice Petroleum and the stake of Toyota Tsusho Corporation, becoming the largest shareholder and operator
• 2021 - FEED awarded for Trefoil project

Links

1. Process Group Oil And Gas Processing References
2. [ Santos Acquires Cultus Petroleum - Amadeus and Bass Basin Interests]
3. EPC Contract Awarded For BassGas Project
4. BassGas Project launch - a new source of gas supply for south east Australia
5. AWE sells part of Bass Basin portfolio and announces 5 cps special dividend
6. BassGas enhancement project reaches major milestone, project costs revised
7. Yolla platform returns to production
8. Rig secured for Yolla gas field drilling program
9. Another milestone achieved in BassGas MLE project
10. First Of Two New Production Wells At Bassgas Successfully Spudded
11. Wood to support Beach Energy’s Trefoil Development Opportunity