key enabler and integral part of the field
development activity. A complicating factor
is that the field characteristics change over
time and the flow assurance approach must
adapt with the evolving field.
Flow assurance issues can be grouped into three different categories. They are
➊;Production Chemistry Issues
Typical production chemistry issues are hydrates, wax/paraffins, scales
and asphaltenes. Operational issues
are slugging, sand production, foam
and emulsions. Corrosion and erosion
fall under integrity issues. Figure 1
shows typical flow assurance issues like
hydrates, wax and corrosion encountered
in subsea oil fields.
Flow assurance is an understanding of multiphase flow fluid dynamics and analyses, an ability to identify flow-related problems using state-of-the- art prediction tools, and the knowledge to develop solutions that eliminate, mitigate or remediate flow- related issues encountered in subsea systems. Flow
assurance is reliable, safe and cost efficient management
of hydrocarbons from reservoir to export without any flow-
related issues over the life cycle of the oil field.
Subsea developments continue to escalate in quantity
and complexity as the exploration and production
companies ramp up exploration of deepwater and
ultra-deepwater reservoirs with complex formations in
harsh environments with increased challenges [ 1]. Typical
challenges involve ultra-deepwater, longer offsets and
tiebacks, arctic environments, high pressure and high
temperature fields, heavy oil, and low-energy reservoirs.
Subsea field development involves multi-discipline activity
to generate an optimized solution and typically parallel
activities are performed. There is a significant level of
interaction between these activities and flow assurance is a