Follow us: RSS Twitter Facebook LinkedIn

NSRI

The voice of the UK subsea industry

Tracerco: End or Extend? What to do with an Asset's Life

Tracerco: End or Extend? What to do with an Asset's Life

View all news from: Tracerco
View directory entry for: Tracerco

09 August 2018

The oil and gas sectors are leaning more and more towards sustainable, renewable sources across all of its operations. Operators are faced with the decision of extending or ending offshore production asset life and pre-decommissioning planning has emerged as a key challenge for the industry. Mitigating uncertainty, enabling decision making and justification as to whether to end or extend asset life, as well as detailed knowledge of asset conditions is crucial. Tracerco have some ideas, however: a range of diagnostics services can be used to provide this detailed knowledge throughout late life operations.

During the review of whether or not to extend an asset's life, it is vital that an inspection of asset structures is conducted in order to see the condition of the asset and confirm the safety in extending its life. In cases of initial assessment, technologies that can confirm structural integrity with regard to pipeline corrosion and erosion, flexible riser liner and carcass inspection, midwater arch/buoyancy tank inspection, platform member inspection and grout monitoring is essential. These technologies, all of which are provided by Tracerco, are also vital during extended life campaigns, as regular inspection is required to confirm the viability of the asset.

For ongoing processing, data collected via detection, diagnostic, and measurement technologies make reliable and cost-savvy production methods. Reservoir recovery is circa 30% to 40%, and with IOR/EOR technologies as an industry we have experienced a significant impact, where these percentages have been significantly increased. In IOR/EOR applications, chemical tracer technology can be used to manage fluid movement and maxmise hydrocarbon output by establishing water entry points, providing a water cut profile along the wellbore and confirming the water source from the formation or injection water movement when combined with waterflood tracing.

For field development planning, Tracerco's flow assurance technology allows operators to see high flow permeable channel blocking in subsea pipelines without effecting operations, and check how effective a chemical treatment would be. In addition, operators can also measure waterflood effectiveness, residual oil saturation, water and oil inflow - which can often be used as an alternative to PLTís where they are deemed too risky, costly, or well design does not permit -  as well as effective water injection and mud invasion. Tracerco also offers added safety measures during logging while drilling (LWD) using a specially designed monitor for source detection.

If, after assessment, the asset is found to be beyond the scope of extending, a plan must be formed to begin decommissioning. The important factor here is to ensure that the route taken mitigates risk and is carried out safely, considering the best interests of the environment as well as complying with local regulations and legislation.

Operators can make informed decisions on whether or not to decommission an asset thanks to Tracerco's technologies, that observe and report on the condition of an asset. Tracercoís diagnostic services can give information on the integrity of structures which can justify safe decommissioning. Knowledge of platform member integrity and flowline contents allows operators to assess the weight of structures (as well as ensure they are free from deposits/blockages) before any lifting, ensuing safe dismantling. Tracerco also offers expertise and equipment for NORM and LSA scale management, detection, and disposal - ensuring that decommissioning is as safe as possible. These services are also valuable in radioactive source recycling, further enhancing the safety and sustainability of operatorsí decommissioning programmes.

This article was originally a blog published by Tracerco. Read more about Tracerco's flow assurance capability on their website, here.