Gas hydrate risks minimization in deepsea hydrocarbon
flowlines,
especially in high water to oil ratios, and is critical for the oil
and gas flow assurance industry. Although there are several reviews
on gas hydrate mitigation in gas-dominated systems, limited reviews
have been dedicated to the understanding and mechanism of hydrate
formation and mitigation in oil-dominated systems. Hence, this review
article discusses and summarizes the prior studies on the hydrate
formation behavior and mitigation in oil-dominated multiphase systems.
The factors (such as oil volume or water cut, bubble point, and hydrate
formers) that affect hydrate formation in oil systems are also discussed
in detail. Furthermore, insight into the hydrate mitigation and mechanism
in oil systems is also presented in this review. Also, a detailed
table on the various studied hydrate tests in oil systems, including
the experimental methods, inhibitor type, conventions, and testing
conditions, is provided in this work. The findings presented in this
work are relevant for developing the best solution to manage hydrate
formation in oil-dominated systems for the oil and gas industry.