A 7 in – 17 lb/ft (6.538in ID) casing string is set at 8,000 ft deep in a 8 3/4 in hole. A height of 3,850 ft of cement is required in the annulus, and 60 ft of cement is left in the casing. Caliper measurements indicate the following average diameter: Well Depth ft 7000-8000 6000-7000 5000-6000 4000-5000 Average Diameter inch 91/8 91/4 95/8 93/8 Calculate the volume of cement slurry required using the caliper measurements and 15% of excess, and Without using the caliper measurement and 50% of excess. Calculate, for each case, the number of sacks of cement if the yield is 1.1 /sack.
A 7 in – 17 lb/ft (6.538in ID) casing string is set at 8,000 ft deep in a 8 3/4 in hole. A height of 3,850 ft of cement is required in the annulus, and 60 ft of cement is left in the casing. Caliper measurements indicate the following average diameter: Well Depth ft 7000-8000 6000-7000 5000-6000 4000-5000 Average Diameter inch 91/8 91/4 95/8 93/8 Calculate the volume of cement slurry required using the caliper measurements and 15% of excess, and Without using the caliper measurement and 50% of excess. Calculate, for each case, the number of sacks of cement if the yield is 1.1 /sack.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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- A 7 in – 17 lb/ft (6.538in ID) casing string is set at 8,000 ft deep in a 8 3/4 in hole. A height of 3,850 ft of cement is required in the annulus, and 60 ft of cement is left in the casing. Caliper measurements indicate the following average diameter:
Well Depth ft |
7000-8000 |
6000-7000 |
5000-6000 |
4000-5000 |
Average Diameter inch |
91/8 |
91/4 |
95/8 |
93/8 |
- Calculate the volume of cement slurry required using the caliper measurements and 15% of excess, and
- Without using the caliper measurement and 50% of excess. Calculate, for each case, the number of sacks of cement if the yield is 1.1 /sack.
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