Mitigating Gas in Riser Rapid Unloading for Deepwater Dual-Gradient Well Control
A study using a dynamic multiphase-flow software simulated a rapid-unloading event and determined the gas fraction in the riser annulus and the effect on riser fluid levels.
New Drilling Methods Add to Troll’s Life Span
The Troll field is one of the largest gas producers discovered off Norway, but ensuring its long-term future required finding ways to drill wells in an increasingly fragile formation to develop its rich oil reserves.
Drilling a Difficult Well in Deep Water off Cuba
The list of wells drilled using dual gradient includes one drilled in the “eastern Gulf of Mexico,” which could be more precisely described as offshore Cuba.
Dual-Gradient Drilling in Ultradeepwater Gulf of Mexico
A previous attempt to drill an exploration well in ultradeep water in the Gulf of Mexico (GOM) did not reach its objective.
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