Lesson Learned – Investigate the use of a Subsea Isolation Device (SID) for drilling riser

Asked by sicalamanto 4 years, 6 months ago | 1 Answers

1 Answer

VuTran 4 years, 6 months ago
SID is large and likely will not fit through the wellbay tensioners. Hence, the SID will need to be pre-installed and 'jumped' from well to well during drilling. Jumping between wells will likely cause interference with existing production risers and may lead to a larger seafloor arrangement. Consideration on how to run and retrieve for maintenance and inspection will also be necessary. The guidewire system may need to be increased to accommodate the loads and large size of the SID. The large mass at the base of the drilling riser will need to be considered in the conductor analysis (this was shown to be critical in the previous analysis with a MODU).