Question: QUESTION 2 You are going to set a cement plug to isolate an open hole section during a well P&A operation Hole diameter =

QUESTION 2 You are going to set a cement plug to isolate an open hole section during a well P&A operation Hole diameter = 12.25 in. Casing ID = 12.615 in Casing shoe depth = 9,000 ft Set a balanced plug, 500 ft high, with its bottom at 9,250 ft. Use water spacers of equal height inside DP and in annulus. The required spacer height is 600 ft. Drillpipe string consists of 5" D 19.50 lb/ft (ID = 4.276 in.), open ended. Cement: Use class G cement, 15.8 ppg. Use 50% excess in open hole (adopt an effective hole diameter) Use 10-bbl excess in cased hole Determine: a) Spacer ahead, cement slurry, spacer behind, and displacement mud volumes (bbl)

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