Wheatstone Project - Start-Up and 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||Chevron Australia Pty Ltd|
|Submission date||13 July, 2016|
|Decision date||31 August, 2016|
|Link to previously accepted EP|
Mr Paul Reynolds
The Project will produce hydrocarbon fluids from offshore fields, transport fluids through flowlines to the Wheatstone platform (the platform) for initial processing, and transport gas and condensate through a pipeline (the trunkline) to the onshore gas plant for further processing. Resultant LNG and condensate will be exported by vessels to the international market, and gas will also be made available to the domestic market via a tie-in with the existing Dampier to Bunbury Natural Gas Pipeline.
The activities will be conducted in Commonwealth Waters, Western Australia (WA) State Waters, and on the WA mainland, thus spanning more than one regulatory jurisdiction. Only those activities that fall within a given jurisdiction are submitted to the respective regulator to meet relevant regulations, as follows:
• the National Offshore Petroleum Safety and Environmental Management Authority (NOPSEMA) for acceptance under the Commonwealth Offshore Petroleum and Greenhouse Gas Storage (Environment) Regulations 2009 (OPGGSER)
• the WA Department of Mines and Petroleum (DMP) for approval under the Petroleum (Submerged Lands) (Environment) Regulations (PSLER) 2012 (WA)/ Petroleum Pipelines (Environment) Regulations (PPER) 2012 (WA).
Fluid production will be from wells located in the Wheatstone (WA-46-L, WA-47-L, and WA-48-L) and Iago (WA-46-L and WA-48-L) fields located off the Pilbara coast of WA. Additionally, the platform (WA-3-IL) will receive fluids from the Julimar Development Project (JDP) WA-49-L, located south west of WA-48-L, described in the Woodside Energy Julimar Pty Ltd (Woodside) EP (Ref. 154).
The offshore section of the trunkline includes a Commonwealth Waters section from the platform to the State Waters boundary (WA-25-PL), and a State Waters section (TPL/25) to the shore crossing through a microtunnel. The trunkline exits the microtunnel and remains buried onshore for approximately 1 km before emerging above ground just before the onshore endpoint (defined in Section 1.3) located upstream of the gas plant. Figure 1-2 shows the onshore trunkline section and the surrounding licence area PL99, which is included in the scope of this EP. The trunkline crosses the shore at Ashburton North, which is approximately 12 km south-west of Onslow on the Pilbara Coast, within the Shire of Ashburton, W.A.
This EP addresses Project Start-up and Operations activities associated with the Wheatstone/Iago hydrocarbon system and platform, commencing when hydrocarbons are introduced into the hydrocarbon system (either through ‘buy-back’ gas from the onshore plant delivered through the trunkline to the platform, or, from the delivery of production fluids from the wells through the flowlines to the platform).
Note: This information has been extracted from Section 2.1 “Overview of the Activity” of the Environment Plan at the direction of the Titleholder.