Q3: (20 Points) A 3.000-ft, 13%-in. (54/b/ft) surface casing string is to be cemented in a 17-in. hole. The mind weight is 10.0 lb/gal. The 1,000 ft tail slurry is 14.2 lb/gal Class A cement with 4% bentonite. The remaining lead slurry is 12.2 lb/gal Class A cement with 16% bentonite. Use a 100% volumetric washout factor. Compute: 1. Cement, water, and gel requirements. 2. Displacement volume 3. Differential pressure before releasing top plug 4. Differential pressure when top plug lands on float collar