Frequently Asked Questions

The benefits of lightweight, flexible TCP offer huge knock-on effects that trigger clients to think further and use TCP to optimise the full field layout:

• Well jumpers and spools: The flexibility of the TCP allows for easy installation of well jumpers, doing away with metrology and increasing the target box for the well itself. This reduces the cost for drilling the well. In addition, the low stiffness of the TCP compared to flexible pipe, reduces the loading on the connectors that connect the well jumper to the wellhead or manifold, which in turn can reduce the cost of the connectors and/or reduce the size of the subsea structures and their associated cost. In some cases, the flexibility even allows for the pipeline end termination to be installed without anchors, further and significantly reducing cost.
• Risers: The low weight of the TCP Riser significantly reduces the hang-off weight at the floater, platform or FPSO (Floating Production, Storage and Offloading facility), which in turn leads to additional knock-on effects. The riser balcony that supports all the risers on spread-moored FPSO’s can be reduced in size, the riser pull-in system can be made smaller, the mooring system is smaller. Finally, the lower top tension lead to more pay-load carrying capability of the floater.

TCP does not corrode and reduces installation cost compared to steel pipes. The benefits can be summarized as follows:

• Where steel corrodes and requires regular pigging and inspection, TCP does not corrode and as such produce continuously without regular inspections.
• TCP is supplied in long lengths of around 3,000 meters per spool, which is lightweight and easy to install. The TCP is cheaper to transport, and installation can be fast by flex-lay, horizontal lay using small vessels, or tow-out.
• The flexibility of TCP reduces the requirement for seabed preparation and provides more flexibility to deal with existing infrastructure, coral reefs and the like. This significantly reduces cost and installation time.
• The long length of TCP per line reduces the number of flanged connections to a minimum, or to zero. The flexibility of the TCP, in combination with the ability to terminate offshore, allow even for J-tube pull in, avoiding diving and subsea connections altogether.

TCP is lightweight, spoolable, flexible and does not corrode. These elements always lead to a significant reduction in total installed cost and total cost of ownership, through any one or a combination of the following effects:

• In most cases, the transport cost for TCP is much lower by the low pipe weight and flexibility. Strohm's TCP is the most flexible TCP and can be transported on wooden drums or pallets.
• The installation can be done either in flexlay / horizontal lay method, allowing for using vessels of opportunity, or using the proven tow-out method, whereby low-cost tug boats are used for pulling the pipe to location and laying down onto the seabed.
• Strohm's TCP is the most flexible TCP; this allows easy subsea installation of TCP by ROV, subsea pallet and avoids the need for metrology of jumper spools.

We have proven business cases in working on our projects with our clients. We are happy to work with you on assessing the cost for your project too. Beyond the lower installation cost, the lifecycle cost is reduced because of the total lack of corrosion, and easy recovery of the flexible TCP.

All products: No corrosion, lower cost, less CO₂.

• Flowlines: Lower total installed cost and lower total life cycle cost by lower transportation and installation cost. Ability to terminate the pipe offshore and pull through J-tubes offshore without end-fitting.
• Well jumpers and spools: Dramatically lower total installed cost thanks to avoidance of metrology, easier subsea installation through submersible pallet or direct by the vessel crane, and lower pipe cost compared to flexible pipe.
• Risers: Superior service life, superior fatigue performance and no Stress Corrosion Cracking. Significantly lower installation cost thanks to the avoidance of buoyancy elements, related installation, and fewer sections of riser. Lower top tension.
• Jumpers: High flowrates in combination with collapse resistance to large water depth.