February ETM - DECOMMISIONING

The Society for Underwater Technology invite you to the February 2023 Evening Technical Meeting:

The evening will focus on the following three topics:

1. ROV BASED WELLHEAD ANNULAR ABANDONMENT

by Iain Wylie - Oceaneering

Developed and manufactured in Perth for export, a Vessel-based Remotely Operated Vehicle (ROV) methodology and suite of equipment was created to gain access to the multiple annular spaces of subsea wellheads for testing and remediation prior to wellhead severance. Conventionally, annular abandonment is conducted by rigs through the wellhead connector using a snubbing unit and perforation equipment to get cement into the annular spaces. Alternatively, saturation divers have used manual multi-string hot tapping units for the same task. Our method was four times faster than a jack-up rig, and an order of magnitude less expensive than a saturation diving campaign without the risk of divers in the water. This presentation will review the objectives, development of the methodology, the equipment and summarize the offshore campaign

2. RETIRING THEVENARD ISLANDS OFFSHORE PLATFORMS

Grant Brunsdon– Chevron

Given aging assets and increased focus on decommissioning in the local O&G industry it is important to learn from challenges faced by the early decommissioning projects.

The Thevenard Island (TVI) facilities, off the coast of Onslow, consisted of an oil and gas processing plant, accommodation and wells on Thevenard Island with nine offshore wellhead platforms, associated subsea pipelines and a tanker loading area. The asset ceased operations in 2014 and has been on a pathway to decommissioning across all facets (wells, onshore plant, offshore platforms and subsea pipelines) since.

The project has completed various Regulatory approvals, cessation of production cleaning, onshore well P&A, offshore well P&A, Onshore facilities decommissioning and island remediation. Current activities include planning for platform removals, planning for pipeline retirement and island landform rehabilitation. There have been many challenges along the journey this is an opportunity to share and discuss some of the experiences.

The presentation will provide an overview of Autonomous Underwater Vehicles (AUV) and sonar technologies and how they can be used in Defence applications such as intelligence, surveillance and reconnaissance (ISR), mine countermeasures, seabed survey and inspection / monitoring of critical infrastructure.

3. ‘KING OF THE REEFS – THE ENHANCEMENT & RETENTION OF REPURPOSED ASSEST TO CREATE PRODUCTIVE MARINE ECOSYSTEMS’

by Tim Grose & James Florisson - Recfishwest

King Reef became Australia’s first integrated artificial reef in 2018 repurposing steel structures donated by BHP from the Griffin Field augmented with purpose-built concrete reef modules. The reef was a result of a five-year community vision, which was expanded due to the formation of a consortium including the state government, academia, petroleum industry, engineers and Recfishwest). King Reef experienced rapid colonisation post deployment, exceeding the abundance, species diversity and biomass of fishes observed at natural reef and sand habitats in the Exmouth Gulf, in fact over 100 species of fish were observed through community monitoring in the first four years. As expected, (but not scientifically proven until now) the repurposed steel structures had the highest mean fish abundance, species diversity and biomass of all the reef structures.

The reef is now championed by the local recreational fishing community, supported by funded reef monitoring and citizen science projects from BHP and now Woodside Energy and is a pioneer of successful marine habitat enhancement utilising repurposed assets from the Petroleum Industry. Since King Reef’s success, Recfishwest and partners have been leading the way in exploring how the recreational fishing community (as WA’s largest aquatic user group) can enjoy, champion and advocate for the creation, enhancement and retention of more integrated reefs, especially amongst WA’s offshore oil and gas landscape. This is not just an engineer’s world anymore, the fishing community arguably get more excitement from subsea structures than anyone else on the environment.

Programme:

5.30 pm - 5.55 pm Registration

6.00 pm - 7.30 pm Presentations

7.30 pm - 8.30 pm Networking drinks & nibbles

For more information about the event visit our .

Contact: SUT (08) 9481 0999 or [email protected]

Terms & Conditions for this event:

SUT Evening Technical Meeting registrations are online and will be sold on a first come, first served basis.

To confirm your place at the above SUT Evening Technical Meeting, you must register and pay online prior to the event. As this event series has previously sold out, early registration is recommended. Please note, online registration closes at 2pm on the day (unless sold out prior).

Payment during the registration process (via credit card or invoice) is required in order to secure your place/s. If using credit card it will be deducted at the time of registration and an email confirmation and email receipt/tax invoice from Eventbrite will be forwarded to the stipulated email address. If invoice requested, it will be sent to your email address at time of registration and payment will be required within 14 days from receipt of invoice. If payment is not received within this time your registration may be cancelled.

Evening Technical Meetings cost:

Early Bird (For bookings up to 1st February 2023)

• $35 SUT Members
• $55 for Non-members.
• $150 for Corporate Member: Group Booking for 5pax**
• $275 for Corporate Member: Group Booking for 10pax**

Season Pass Registration (available for sale anytime)

• $150 for Members: 5-Ticket Season Pass*
• $250 for Non Members: 5-Ticket Season Pass*

  * indicates registration for 5 consecutive Evening Meetings. You will automatically be registered for this ETM plus the following 4 Evening Meetings so further registration is not required. Should you be unable to attend one of these meetings then registration is transferable to another SUT member. To transfer a registration please email [email protected] with any changes to attendees.

  ** indicates registration for 5 or 10 places at this ETM.

Regular Registration (For bookings from 2nd February 2023 until 2pm on 8th February 2023)

• $45 SUT Members
• $65 for Non-members 
• $200 for Corporate Member: Group Booking for 5pax
• $375 for Corporate Member: Group Booking for 10pax

Late Registration/Onsite (For bookings after 2pm on 8th February 2023)

• $50 SUT Members
• $70 for Non-members

*Registrations are editable online via your Eventbrite registration link until 2pm on the day. 

Registrations are fully refundable up until  30 days prior to the event. 

Should our event be postponed due to government regulations surrounding COVID-19, attendees will have the option to have their ticket transferred to the postponed date or receive a full refund.

To confirm if your organisation is a Corporate Member please check the event flyer or visit www.sut.org/sut-pages/

1.5 CPD hours can be claimed for this event. Please keep the flyer and receipt for auditing purposes.

Should you have any questions please contact SUT on the above listed contact details. 

Host or Publisher Society for Underwater Technology - Perth Branch