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Assessment Underbalanced Drilling in Directional Wells
1. Which of these conditions would NOT be favorable for underbalanced drilling?
A .Depleted reservoir pressure
B .Reservoirs sensitive to invasion of foreign materials
C .Unconsolidated formations ✔
D .Fractured reservoirs
E .Hard-to-stimulate reservoirs
2. Which of these systems can be used in underbalanced drilling operations?
A .Conventional MWD tools
B .Electromagnetic MWD tools ✔
C .A and B
D .None of the above
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