CUEL (on behalf of Chevron Thailand) have approached STATS Group to assist in a subsea pipeline repair project for 8” Gas Condensate Export Pipeline in 2016
Due to the length of time it may potentially take for a new tee to be manufactured and installed, the client is exploring the option to maintain production by using STATS Intervention Technology to safely isolate and install a suitable bypass line.
BISEP™ Branch Installed Self EnergisedPlug
Figure 1 - The BISEP™ is a Double Block and Bleed line stop tool which has been developed and
patented by STATS, It uses Techno Plug™ seals mounted on a spherical head to provide the dual
barrier isolation.
Figure 2 – BISEP™ set sequence
Double Block & BleedVerification Tests
Testing
As a minimum, all STATS supplied equipment is factory acceptance tested (FAT) and certified by STATS staff prior to mobilisation in line with the project parameters.
All testing and certification can either be client or third party witnessed as part of the pre-mobilisation acceptance criteria. All testing will be performed in a fixture with pipe wall and material strength similar to that on site, to replicate site conditions.
In some cases, an in country Site Integration Test with client provided equipment is also required, and can also be used to provide diver familiarisation with the scope and equipment.