In a 12 hole, 9.5/8 (40 lb/ft) L80 casing with an ID of 8.835 was run

 In a 12 ¼" hole, 9.5/8" (40 lb/ft) L80 casing with an ID of 8.835" was run in to a

shoe depth of 6,100 ft TVD. The float collar at the 6,020 ft. Hole is assumed to

be in gauge.

Top of Cement at 4,000 ft

Top of Spacer at 5,000 ft

Spacer Weight = 12 ppg

Mud Weight = 10 ppg

Cement Class H:

Yield = 1.15 cuft/sk

Density = 16 lb/gal

Water Requirement 4.5 gal/sk

1 barrel = 5.615 ft3

1 Barrel = 42 gallons

Sack cementing weighs 94 lbs

Calculate:

(i) Volume of cement slurry; 

(ii) Number of sacks of cement required;

(iii) Volume of water mix required; 

(iv) If the cement is displaced with mud and the plugs bump, what would be

the final displacement pressure. 

Other information.

RKB height above MSL = 77 ft

semi-submersible rig to be used

Total depth = 7150 ft TVD RKB, 8260 ft MD RKB

 

Question 2

Along with the cementing unit what other topsides and downhole equipment are

required to carry out the 9 5/8" primary cementing job?