API BULL 5C2 High Collapse Casing
Applicable standards and technical requirements
API SPEC 5CT Specification for casing and tubing
API TR 5C3 Calculated performance properties of pipe used as casing or tubing
API BULL 5C2 Bulletin on performance properties of casing, tubing and drill pipe
B. High strength high collapse casing
Applicable standards and technical requirements
API SPEC 5CT Specification for casing and tubing
API TR 5C3 Calculated performance properties of pipe used as casing or tubing
API BULL 5C2 Bulletin on performance properties of casing, tubing and drill pipe
Mechanical properties
Grade | Yield strength/Mpa | Tensile Strength/Mpa | Elongation |
BL110/BL110T/BL110TT | 758~965 | ≥862 | Calculated according to API 5CT formula |
BL125/BL125T/BL125TT | 862~1034 | ≥931 | |
BL130/BL130T/BL130TT | 896~1103 | ≥965 | |
BL140/BL140T/BL140TT | 965~1172 | ≥1034 | |
BL150/BL150T/BL150TT | 1034~1241 | ≥1103 |
D/mm | T/mm | Collapse resistance/Mpa | |||||||||
110 | 125 | 130 | 140 | 150 | |||||||
BL110 | BL110T | Q125 | Q125T | Q130 | Q130T | Q140 | Q140T | Q150 | Q150T | ||
114.3 | 8.56 | 98.9 | 119.6 | 109.2
| 127.1 | 112.4 | 130.7 | 118.7 | 137.7 | 124.8 | 144.4 |
127 | 9.19 | 92.8 | 112.2 | 102.1 | 119 | 105.1 | 122.2 | 110.8 | 128.6 | 116.1 | 134.6 |
11.1 | 121 | 143.7 | 137.5 | 155.2 | 143 | 160.9 | 154 | 172.4 | 165 | 183.9 | |
12.14 | 131.2 | 155.7 | 149.1 | 168.1 | 155 | 174.3 | 166.9 | 186.8 | 178.8 | 199.2 | |
12.7 | 136.6 | 162 | 155.1 | 174.9 | 161.3 | 181.4 | 173.7 | 194.4 | 186.2 | 207.3 | |
139.7 | 9.17 | 76.6 | 92.5 | 83.4 | 97.4 | 85.4 | 99.8 | 89.3 | 104.2 | 92.9 | 108.3 |
10.54 | 100.2 | 121.3 | 110.7 | 128.8 | 114.1 | 132.6 | 120.5 | 139.7 | 126.7 | 146.6 | |
12.7 | 125.4 | 148.9 | 142.5 | 160.7 | 148.2 | 166.6 | 159.6 | 178.6 | 170.9 | 190.5 | |
168.3 | 8.94 | 46.4 | 55.8 | 48.4 | 57.3 | 48.9 | 57.9 | 49.5 | 58.9 | 50.7 | 59.3 |
10.59 | 70.1 | 84.6 | 75.8 | 88.7 | 77.5 | 90.7 | 80.7 | 94.4 | 83.6 | 97.7 | |
177.8 | 10.36 | 58.8 | 70.9 | 62.8 | 73.8 | 63.9 | 75.1 | 65.9 | 77.5 | 67.6 | 79.4 |
11.51 | 74.4 | 89.9 | 80.7 | 94.5 | 82.8 | 96.7 | 86.4 | 100.9 | 89.7 | 104.7 | |
12.65 | 89.9 | 108.7 | 98.7 | 115.1 | 101.5 | 118.2 | 106.8 | 124.2 | 111.9 | 129.8 | |
13.72 | 104.4 | 126.3 | 115.5 | 134.3 | 119.1 | 138.3 | 126 | 146 | 132.7 | 153.3 | |
193.68 | 9.52 | 36.8 | 44.2 | 39.1 | 45.2 | 39.7 | 45.9 | 40.9 | 47.2 | 41.7 | 48.2 |
10.92 | 54.2 | 65.4 | 57.5 | 67.8 | 58.4 | 68.8 | 59.9 | 70.7 | 61 | 72.1 | |
12.7 | 76.4 | 92.3 | 83.2 | 97.2 | 85.2 | 99.5 | 89.1 | 104 | 92.6 | 108 | |
219.08 | 10.16 | 32.3 | 38.2 | 34 | 39.4 | 34.5 | 39.9
| 35 | 40.6 | 35.4 | 41.1 |
11.43 | 44.1 | 53 | 45.8 | 54.3 | 46.1 | 54.8 | 47.1 | 55.4 | 48.5 | 55.9 | |
12.7 | 58.1 | 70 | 61.9 | 72.8 | 63 | 74.1 | 64.9 | 76.4 | 66.4 | 78.3 | |
Note: TT series anti collapse performance need to negotiate with end user.
