Question: QUESTION 5 ( 1 0 pts ) An annular velocity of 1 5 0 f t m i n is required to efficiently clean a

QUESTION 5(10 pts)
An annular velocity of 150ftmin is required to efficiently clean a
9-in open hole. The drill string inside the well is composed of two
different types of pipes: 600 ft of drill collars (OD=6.5in) and
6,000ft of drill pipes (OD=5in). Compute the minimum flow rate
that must be selected.
QUESTION 5 ( 1 0 pts ) An annular velocity of 1 5

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