
Cut-away section of a hybrid umbilical

Example of scale build-up in tubulars
The Blockage Avoidance in Subsea Injection and Control Systems (BASICS) Joint Industry Project (JIP) was launched in March 2007 in response to industry wide issues with blockages and restrictions in Subsea Production Systems. The JIP was established following an initiative between the UMF (Umbilical Manufacturers Federation) and the SUT (Society for Underwater Technology), which brought the importance of the issue to the fore within the industry. The aim of the JIP was to prevent blockages from occurring in subsea chemical injection and control systems
The JIP ran until December 2011 and resulted in the following:
- API Technical Report (17TR5): Avoidance of Blockages in Subsea Production Control and Chemical Injection Systems
- API Technical Report (17TR6): Attributes of Production Chemicals in Subsea Production Systems