Riser problems force Cobalt to plug Gulf of Mexico well

Riser problems force Cobalt to plug Gulf of Mexico well

Cobalt International Energy, Inc. has plugged and abandoned its North Platte #2 appraisal well in the deepwater U.S. Gulf of Mexico due to a seal failure in the riser connection system.

The well, which was being drilled with the Rowan Reliance drillship, was at a depth of 20,701 feet when the problem with the riser was detected. The well was permanently abandoned prior to reaching any geological targets.

Cobalt is currently permitting the North Platte #3 well approximately 200 feet from the surface location of the North Platte #2 well. Assuming timely receipt of permit approval, Cobalt anticipates spudding the North Platte #3 well within two weeks and continues to expect well results in the second half of 2015.

The North Platte #1 discovery well was drilled in 2012 and encountered over 550 net feet of oil pay in multiple high-quality Inboard Lower Tertiary reservoirs. Cobalt, as operator, holds a 60% working interest in North Platte.

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