The base of a 500-ft plug is to be placed at a depth of 7,000 ft...

 

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The base of a 500-ft plug is to be placed at a depth of 7,000 ft inside the open hole. The bit size is 8.5 in and the drill pipe is 4 ½" OD, 3.286" ID. Fifteen (15) barrels of water are to be pumped ahead of the slurry. Use a Class G "neat" cement slurry with 30% excess and the effective diameter concept in your calculations. a) Compute the volume of water to be pumped behind the slurry to balance the plug. b) Compute the volume of mud to be pumped behind the water to balance the plug. The base of a 500-ft plug is to be placed at a depth of 7,000 ft inside the open hole. The bit size is 8.5 in and the drill pipe is 4 ½" OD, 3.286" ID. Fifteen (15) barrels of water are to be pumped ahead of the slurry. Use a Class G "neat" cement slurry with 30% excess and the effective diameter concept in your calculations. a) Compute the volume of water to be pumped behind the slurry to balance the plug. b) Compute the volume of mud to be pumped behind the water to balance the plug.

Answer rating: 100% (QA)

a To compute the volume of water to be pumped behind the slurry to balance the plug we first need to calculate the volume of the plug itself The volum... View the full answer