BHP Files Plan for Closure of Griffin Gas Export Pipeline Off Australia

Friday, March 25, 2022

BHP Petroleum has submitted an environment plan for the "safe and sustainable" closure of the Griffin Gas Export Pipeline, offshore W. Australia.

The  Griffin Gas Export Pipeline is located within Pipeline Licence WA-3-PL, in Commonwealth waters, and extends from the pipeline end manifold (PLEM) in the Griffin field (WA-10-L) through WA State waters (Pipeline Licence TPL/10) to the shore, ~40 km south west of Onslow. 

Water depths along the Griffin Gas Export Pipeline range from 130 m at the pipeline end manifold (PLEM) to 90 m at the State/Commonwealth waters boundary. The Griffin Gas Export Pipeline is currently pressurized with a nitrogen blanket.

The scope of the environment plan includes the pigging and cleaning of the pipeline to remove mercury contamination, conducting an as-left survey of the pipeline, and decommissioning the pipeline in situ in perpetuity. The scope also includes contingent pipeline removal activities should the mercury removal be unsuccessful.

Pipeline activities managed under the environment plan are planned to start no sooner than Q1 2023, pending regulatory approvals, support vessel availability, and weather constraints. The completion is expected by the end of the calendar year 2024.

The removal of the majority of the Griffin facilities (well heads, flowlines, subsea ancillary equipment) within the WA-10-L and WA-12-L licenses is subject to an environmental approval currently under assessment by the Australian offshore oil and gas safety regulator NOPSEMA, and remaining field equipment (Riser Turret Mooring - if not fully removed, piles, anchors, concrete gravity bases) will be subject to a separate future environmental approval.

Categories: Energy Pipelines Activity Decommissioning Australia/NZ Shallow Water

Related Stories

Malaysia’s Petronas and Oman’s OQEP Strengthen Oil and Gas Ties

Southeast Asia’s 2GW Cross-Border Offshore Wind Scheme Targets 2034 Buildout

Pharos Energy Kicks Off Drilling Campaign Offshore Vietnam

SBM Offshore, SLB to Optimize FPSO Performance Using AI

MDL Secures Cable Laying Job in Asia Pacific

Japan Picks Wood Mackenzie to Assess Trump-Backed Alaska LNG Scheme

Dutch Contractor Completes Malaysia’s Largest 'Rig-to-Reef' Decom Project

SBM Offshore’s Jaguar FPSO Enters Drydock in Singapore (Video)

CNOOC Finds Oil and Gas in South China Sea

Santos and QatarEnergy Agree Mid-Term LNG Supply

Current News

Russia's Lukoil Takes Up Gunvor’s Offer for Foreign Assets

How Hot Is Your Cable? Understanding Subsea Cable Thermal Performance

Sponsored: UAE Breaks Ground on GW-Scale Renewable Energy Hybrid

Pertamina Joins Petronas in Ultra-Deepwater Asset off Indonesia

Malaysia’s Petronas and Oman’s OQEP Strengthen Oil and Gas Ties

Southeast Asia’s 2GW Cross-Border Offshore Wind Scheme Targets 2034 Buildout

Pharos Energy Kicks Off Drilling Campaign Offshore Vietnam

Viridien to Shed More Light on Malaysia’s Offshore Oil and Gas Potential

US Pressure on India Could Propel Russia's Shadow Oil Exports

Energy Drilling’s EDrill-2 Rig Starts Ops for PTTEP in Gulf of Thailand

Subscribe for AOG Digital E‑News

AOG Digital E-News is the subsea industry's largest circulation and most authoritative ENews Service, delivered to your Email three times per week

https://accounts.newwavemedia.com