Another Bespoke Innovation - The 'Gas Collector'

Andrew Ford is a subsea innovator, experience and taking the time to really understand the client’s needs and not just the work scope, Andrew and his team were able to develop an innovation that has ongoing value to his subsea clients. Gas leaks are nothing new in subsea oil and gas operations, but it is imperative for operators and their partners to minimise risks and to always be seeking the best possible solutions to problems faced offshore. This is what Dive Works do every day, seek opportunities for continuous improvement and add value to all subsea and public stakeholders.

An ROV Solution

The team at Dive Works significantly improved previous methods of gas leak detection which utilised a work class ROV with longer leads times, higher costs and less accurate data obtained.

The R&D team modified an observation class ROV from the Fleet and engineered a solution that could be take meaningful measurements for the client, called the “Gas Collector”.

Essentially an aluminium frame was constructed, which was then attached to the front of the ROV, approximately 30cm in front of the ROVs camera.

Then a 180-degree tilt unit was fitted, which was controlled from the surface. The gas collector was connected to the tilt unit allowing the ROV pilot full control of the degree of angle at any one time.

This was all in full view of the ROVs camera so the displacement of water with the gas was fully visible.

The Gas Collector

The Gas Collector was placed in the upright position so as to flood it with water and extrude all air. The ROV Pilot then flew the ROV down to the survey area, landed out the ROV next to the pipe and tilted the gas collector over the area of the leak. The ROV Pilot then calculated the time it took to displace one liter of water with the gas. Once this was completed the ROV stayed in position and the gas collector was tilted 180 degrees, so as to displace the gas from the collector. This meant that the survey could be repeated as many times as necessary without moving the ROV. Once completed, the ROV surfaced with the gas collector in the upward position, so as not to have any gas left in the collector before recovery to the vessel.  The survey was recorded onto high definition video.

The measurements were successfully taken allowing the Client to gather  more precise information about the flow rate of gas from the pipe and develop a far more immediate rectification plan. The estimated the cost saving on the initial project was excess of AUD $100,000  – not to mention savings that will be achieved  well into the future.

get in touch

Dive Works is Australia’s leading technology based subsea solutions provider, utilising a fleet of world class Remote Operated Vehicle’s (ROVs) and experienced  ROV pilots/technicians.

We deliver innovative services in Inspection, Maintenance and Repair (IMR), Subsea Survey’s and Rapid Emergency Response for subsea assets. The sectors we service include Oil & Gas, Water Authorities & Government, Marine, Engineering & Construction throughout Australia and South East Asia.

head office

46B Access Way, Carrum Downs Victoria, Australia 3201

PO BOX 63, South Hobart
Tasmania, Australia 7004

Australia: 1300 586 400

+61 3 9708 2632

[email protected]