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Drilling a Difficult Well in Deep Water off Cuba

Topics: MPD/UBD
Courtesy of Petronas.
The containers hold equipment and controls used for dual-gradient drilling off of Cuba by Petronas.

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.

From a drilling standpoint, the well stands out as the only one using dual-gradient drilling done in water so deep, at 7,500 ft, and it was completed on time by Petronas in a formation where conventional methods had failed, said Robert Ziegler, head of deepwater drilling technology at the Malaysian national oil company.

The well offered a difficult test for a joint industry project that paid much of the cost of the well managed by Petronas. The company is one of the most active users of managed-pressure drilling methods offshore, with as many as five rigs using the technique in southeast Asian waters, but it never required dual gradient in that part of the world.

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Drilling a Difficult Well in Deep Water off Cuba

Stephen Rassenfoss, JPT Emerging Technology Senior Editor

01 July 2014

Volume: 66 | Issue: 7

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