Not for decoration: hydrotesting Christmas trees
Published by Emilie Grant,
Editorial Assistant
Oilfield Technology,
In the oil and gas industry, 'Christmas trees' are not a seasonal decoration. They are critical components that make it possible to control and monitor the wellhead and stop the oil flow in an emergency.
To help manufacturers promote integrity and uniformity in their quality control process, Cortec® recommends the use of VpCI®-649 for corrosion protection during and after hydrotesting.
The corrosion risk
Hydrotesting Christmas trees is an important part of ensuring that these complex assemblies of valves and gauges will withstand pressure when placed on a wellhead. Since hydrotesting involves water, it introduces the risk of corrosion, which is why a corrosion inhibitor like VpCI-649 is imperative for a successful hydrotest.
Corrosion protection beyond hydrotesting
One of the great aspects of VpCI-649 is that it can provide corrosion protection beyond hydrotesting. Dosed at a high enough concentration, VpCI-649 can leave behind a corrosion inhibiting film that will continue protecting Christmas tree internals after the hydrotest. This is a great option for manufacturers that need to ship their Christmas trees far away through harsh conditions, especially those offshore.
Economy and uniformity for manufacturers
In addition to providing internal corrosion protection, VpCI-649 is a great way to reduce waste and ensure uniformity. Multinational manufacturers of oil and gas equipment can ensure uniformity in their hydrotest specifications by adopting VpCI-649, which is available for distribution in more than 100 countries. For greater economy, VpCI-649 can be reused multiple times if the solution is monitored for purity and topped off when the concentration drops.
Read the article online at: https://www.oilfieldtechnology.com/offshore-and-subsea/14082025/not-for-decoration-hydrotesting-christmas-trees/