Cairn Energy reported Monday that its partner Valiant Petroleum is suspending Tybalt appraisal well 211/8c-5 in the North Sea after it failed top demonstrate mobile hydrocarbons.
Valiant, the operator (and which has a 60-percent interest in the project), drilled the well to a total depth of 13,212 measured depth. The well penetrated a full Upper Magnus Sandstone Member section, comprising 844 feet gross, with 316 feet of net sand and 210 core was successfully recovered from this interval.
Although initial analysis of the hydrocarbon saturations indicate that they were broadly similar to those found in the 211/8c-4z discovery well drilled in 2010, porosities were at the low end of expectations and reservoir testing with an MDT (modular formation dynamic tester) tool was unable to demonstrate the presence of moveable hydrocarbons from the well.
Valiant and Cairn (which holds a 40-percent interest via its Agora Oil and Gas subsidiary) have now decided to suspend the well.
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