Drill Collars: Connections and Recommended Make-up Torque
SIZE (in.) | CONNECTION TYPE | O.D. (in.) | MINIMUM MAKE-UP TORQUE IN FOOT-POUNDS | |||||||
---|---|---|---|---|---|---|---|---|---|---|
1 | 1-1/4 | 1-1/2 | 1-3/4 | 2 | 2-1/4 | 2-1/2 | 2-13/16 | |||
API | NC 23 | 3 3-1/8 3-1/4 | 2,500 3,300 4,000 | 2,500 3,300 3,400 | 2,500 2,600 2,600 | |||||
2-3/8 | Regular | 3 3-1/8 3-1/4 | 2,200 3,000 3,900 | 2,200 3,000 3,300 | 2,200 2,600 2,600 | |||||
2-7/8 | PAC | 3 3-1/8 3-1/4 | 3,800 4,900 5,200 | 3,800 4,200 4,200 | 2,900 2,900 2,900 | |||||
2-3/8 API 2-7/8 | API IF NC 26 Regular | 3-1/2 3-3/4 3-1/2 3-3/4 3-7/8 | 4,600 5,500 3,800 6,000 6,500 | 4,600 4,700 3,800 5,800 5,800 | 3,700 3,700 3,800 5,000 5,000 | |||||
2-7/8 | SLIM HOLE | |||||||||
2-7/8 3-1/2 2-7/8 | EXTRA HOLE | 3-3/4 3-7/8 4-1/8 | 4,100 5,300 8,000 | 4,100 5,300 8,000 | 4,100 5,300 7,400 | |||||
2-7/8 API 3-1/2 3-1/2 | API IF | 3-7/8 4-1/8 4-1/8 4-1/4 4-1/2 4-1/4 4-1/2 | 4,600 7,300 6,500 7,900 10,900 8,800 10,000 | 4,600 7,300 6,500 7,900 10,500 8,800 9,300 | 4,600 7,300 6,500 7,900 9,600 8,100 8,100 | 4,600 6,800 6,500 7,900 8,500 6,800 6,800 | 6,500 7,200 7,300 | |||
API | NC 35 | 4-1/2 4-3/4 5 | 8,900 12,100 12,100 | 8,900 10,800 10,800 | 8,900 9,200 9,200 | 7,400 7,400 7,400 | ||||
3-1/2 4 3-1/2 | EXTRA HOLE SLIM HOLE MOD. OPEN | 4-1/4 4-1/2 4-3/4 5 5-1/4 | 5,100 8,400 11,900 13,200 13,200 | 5,100 8,400 11,700 11,700 11,700 | 5,100 8,400 10,000 10,000 10,000 | 5,100 8,200 8,200 8,200 8,200 | ||||
3-1/2 API 4-1/2 | API I.F. NC 38 SLIM HOLE | 4-3/4 5 5-1/4 5-1/2 | 9,900 13,800 16,00 16,00 | 9,900 13,800 14,600 14,600 | 9,900 12,800 12,800 12,800 | 9,900 10,900 10,900 10,900 | 8,300 8,300 8,300 8,300 | |||
3-1/2 | H-90 | 4-3/4 5 5-1/4 5-1/2 | 8,700 12,700 16,900 18,500 | 8,700 12,700 16,700 16,700 | 8,700 12,700 15,000 15,000 | 8,700 12,700 13,100 13,100 | 8,700 10,400 10,400 10,400 | |||
4 API 4 4-1/2 | FULL HOLE NC 40 MOD. OPEN DBL STREAMLINE | 5 5-1/4 5-1/2 5-3/4 6 | 10,800 15,100 19,700 20,400 20,400 | 10,800 15,100 18,600 18,600 18,600 | 10,800 15,100 16,900 16,900 16,900 | 10,800 14,800 14,800 14,800 14,800 | 10,800 12,100 12,100 12,100 12,100 |
SIZE (in.) | CONNECTION TYPE | O.D. (in.) | MINIMUM MAKE-UP TORQUE IN FOOT-POUNDS | |||||||
---|---|---|---|---|---|---|---|---|---|---|
2 | 2-1/4 | 2-1/2 | 2-13/16 | 3 | 3-1/4 | |||||
4 | H-90 * | 5-1/4 | *12,500 | 12,500 | 12,500 | 12,500 | ||||
5-1/2 | *17,300 | 17,300 | 17,300 | 16,500 | ||||||
5-3/4 | *22,300 | 21,500 | 19,400 | 16,500 | ||||||
6 | 23,500 | 21,500 | 19,400 | 16,500 | ||||||
6-1/4 | 23,500 | 21,500 | 19,400 | 16,500 | ||||||
4-1/2 | API REGULAR | 5-1/2 | *15,400 | 15,400 | 15,400 | 15,400 | ||||
5-3/4 | *20,300 | 20,300 | 19,400 | 16,200 | ||||||
6 | 23,400 | 21,600 | 19,400 | 16,200 | ||||||
6-1/4 | 23,400 | 21,600 | 19,400 | 16,200 | ||||||
API | NC 44 | 5-3/4 | *20,600 | 20,600 | 20,600 | 18,000 | ||||
6 | 25,000 | 23,300 | 21,200 | 18,000 | ||||||
6-1/4 | 25,000 | 23,300 | 21,200 | 18,000 | ||||||
6-1/2 | 25,000 | 23,300 | 21,200 | 18,000 | ||||||
4-1/2 | API FULL HOLE | 5-1/2 | *12,900 | 12,900 | 12,900 | 12,900 | 12,900 | |||
5-3/4 | *17,900 | 17,900 | 17,900 | 17,900 | 17,700 | |||||
6 | *23,300 | 23,300 | 22,800 | 19,800 | 17,700 | |||||
6-1/4 | 27,000 | 25,000 | 22,800 | 19,800 | 17,700 | |||||
6-1/2 | 27,000 | 25,000 | 22,800 | 19,800 | 17,700 | |||||
4-1/2 | EXTRA HOLE | 5-3/4 | 17,600 | 17,600 | 17,600 | 17,600 | ||||
API | NC 46 | 6 | 23,200 | 23,200 | 22,200 | 20,200 | ||||
4 | API I.F. | 4-1/2 | 28,000 | 25,500 | 22,200 | 20,200 | ||||
4-1/2 | SEMI I.F. | 6-1/2 | 28,000 | 25,500 | 22,200 | 20,200 | ||||
5 | DBL STREAMLINE | 6-3/4 | 28,000 | 25,500 | 22,200 | 20,200 | ||||
4-1/2 | MOD. OPEN | 4-1/2 | ||||||||
4-1/2 | H-90 * | 5-3/4 | 17,600 | 17,600 | 17,600 | 17,600 | ||||
6 | 23,400 | 23,000 | 23,000 | 21,000 | ||||||
6-1/4 | 28,500 | 26,000 | 23,000 | 21,000 | ||||||
6-1/2 | 28,500 | 26,000 | 23,000 | 21,000 | ||||||
6-3/4 | 28,500 | 26,000 | 23,000 | 21,000 | ||||||
5 | H-90 * | 6-1/4 | 25,000 | 25,000 | 25,000 | 25,000 | ||||
6-1/2 | 31,500 | 31,500 | 29,500 | 27,000 | ||||||
6-3/4 | 35,000 | 33,000 | 29,500 | 27,000 | ||||||
7 | 35,000 | 33,000 | 29,500 | 27,000 | ||||||
4-1/2 | API I.F. | 6-1/4 | 22,800 | 22,800 | 22,800 | 22,800 | 22,800 | |||
API | NC 50 | 6-1/2 | 29,500 | 29,500 | 29,500 | 29,500 | 26,500 | |||
5 | EXTRA HOLE | 6-3/4 | 36,000 | 35,500 | 32,000 | 30,000 | 26,500 | |||
5 | MOD. OPEN | 7 | 36,000 | 35,500 | 32,000 | 30,000 | 26,500 | |||
5-1/2 | DBL STREAMLINE | 7-1/4 | 38,000 | 35,500 | 32,000 | 30,000 | 26,500 | |||
5 | SEMI I.F. | 5-1/2 | 38,000 | 35,500 | 32,000 | 30,000 | 26,500 | |||
5-1/2 | H-90 * | 6-3/4 | 34,000 | 34,000 | 34,000 | 34,000 | ||||
7 | 41,500 | 40,000 | 36,500 | 34,000 | ||||||
7-1/4 | 42,500 | 40,000 | 36,500 | 34,000 | ||||||
7-1/2 | 42,500 | 40,000 | 36,500 | 34,000 |
SIZE (in.) | CONNECTION TYPE | O.D. (in.) | MINIMUM MAKE-UP TORQUE IN FOOT-POUNDS | ||||||
---|---|---|---|---|---|---|---|---|---|
2-1/4 | 2-1/2 | 2-13/16 | 3 | 3-1/4 | 3-1/2 | 3-3/4 | |||
5-1/2 | API REGULAR | 6-3/4 | 31,500 | 31,500 | 31,500 | 31,500 | |||
API REGULAR | 7 | 39,000 | 39,000 | 36,000 | 33,500 | ||||
API REGULAR | 7-1/4 | 42,000 | 39,500 | 36,000 | 33,500 | ||||
API REGULAR | 7-1/2 | 42,000 | 39,500 | 36,000 | 33,500 | ||||
5-1/2 | API FULL HOLE | 7 | 32,500 | 32,500 | 32,500 | 32,500 | |||
API FULL HOLE | 7-1/4 | 40,500 | 40,500 | 40,500 | 40,500 | ||||
API FULL HOLE | 7-1/2 | 49,000 | 47,000 | 45,000 | 41,500 | ||||
API FULL HOLE | 7-3/4 | 51,000 | 47,000 | 45,000 | 41,500 | ||||
API | NC 55 | 7-1/4 | 40,000 | 40,000 | 40,000 | 40,000 | |||
NC 55 | 7-1/2 | 48,500 | 48,000 | 45,000 | 42,000 | ||||
NC 55 | 7-3/4 | 51,000 | 48,000 | 45,000 | 42,000 | ||||
NC 55 | 8 | 51,000 | 48,000 | 45,000 | 42,000 | ||||
6-5/8 | API REGULAR | 7-1/2 | 46,000 | 46,000 | 46,000 | 46,000 | |||
API REGULAR | 7-3/4 | 55,000 | 53,000 | 50,000 | 47,000 | ||||
API REGULAR | 8 | 57,000 | 53,000 | 50,000 | 47,000 | ||||
API REGULAR | 8-1/4 | 57,000 | 53,000 | 50,000 | 47,000 | ||||
6-5/8 | H-90 | 7-1/2 | 46,000 | 46,000 | 46,000 | 46,000 | |||
H-90 | 7-3/4 | 55,000 | 55,000 | 53,000 | 49,000 | ||||
H-90 | 8 | 59,500 | 56,000 | 53,000 | 49,000 | ||||
H-90 | 8-1/4 | 59,500 | 56,000 | 53,000 | 49,000 | ||||
API | NC 61 | 8 | 54,000 | 54,000 | 54,000 | 54,000 | |||
NC 61 | 8-1/4 | 64,000 | 64,000 | 64,000 | 61,000 | ||||
NC 61 | 8-1/2 | 72,000 | 68,000 | 65,000 | 61,000 | ||||
NC 61 | 8-3/4 | 72,000 | 68,000 | 65,000 | 61,000 | ||||
NC 61 | 9 | 72,000 | 68,000 | 65,000 | 61,000 | ||||
5-1/2 | API I.F. | 8 | 56,000 | 56,000 | 56,000 | 56,000 | 56,000 | ||
API I.F. | 8-1/4 | 66,000 | 66,000 | 66,000 | 63,000 | 59,000 | |||
API I.F. | 8-1/2 | 74,000 | 70,000 | 67,000 | 63,000 | 59,000 | |||
API I.F. | 8-3/4 | 74,000 | 70,000 | 67,000 | 63,000 | 59,000 | |||
API I.F. | 9 | 74,000 | 70,000 | 67,000 | 63,000 | 59,000 | |||
API I.F. | 9-1/4 | 74,000 | 70,000 | 67,000 | 63,000 | 59,000 | |||
6-5/8 | API FULL HOLE | 8-1/2 | 67,000 | 67,000 | 67,000 | 57,000 | 66,500 | ||
API FULL HOLE | 8-3/4 | 78,000 | 78,000 | 76,000 | 72,000 | 66,500 | |||
API FULL HOLE | 9 | 83,000 | 80,000 | 76,000 | 72,000 | 66,500 | |||
API FULL HOLE | 9-1/4 | 83,000 | 80,000 | 76,000 | 72,000 | 66,500 | |||
API FULL HOLE | 9-1/2 | 83,000 | 80,000 | 76,000 | 72,000 | 66,500 | |||
API | NC 70 | 9 | 75,000 | 75,000 | 75,000 | 75,000 | 75,000 | ||
NC 70 | 9-1/4 | 88,000 | 88,000 | 88,000 | 88,000 | 88,000 | |||
NC 70 | 9-1/2 | 101,000 | 101,000 | 100,000 | 95,000 | 90,000 | |||
NC 70 | 9-3/4 | 107,000 | 105,000 | 100,000 | 95,000 | 90,000 | |||
NC 70 | 10 | 107,000 | 105,000 | 100,000 | 95,000 | 90,000 | |||
NC 70 | 10-1/4 | 107,000 | 105,000 | 100,000 | 95,000 | 90,000 | |||
API | NC 77 | 10 | 107,000 | 107,000 | 107,000 | 107,000 | |||
NC 77 | 10-1/4 | 122,000 | 122,000 | 122,000 | 122,000 | ||||
NC 77 | 10-1/2 | 138,000 | 138,000 | 133,000 | 128,000 | ||||
NC 77 | 10-3/4 | 143,000 | 138,000 | 133,000 | 128,000 | ||||
NC 77 | 11 | 143,000 | 138,000 | 133,000 | 128,000 |
SIZE (in.) | CONNECTION TYPE | O.D. (in.) | MINIMUM MAKE-UP TORQUE IN FOOT-POUNDS | ||||
---|---|---|---|---|---|---|---|
2-13/16 | 3 | 3-1/4 | 3-1/2 | 3-3/4 | |||
7 | H-90 | 8 | 53,000 | 53,000 | 53,000 | 53,000 | |
8-1/4 | 63,000 | 63,000 | 63,000 | 60,500 | |||
8-1/2 | 71,500 | 68,500 | 65,000 | 60,500 | |||
7-5/8 | API REGULAR | 8-1/2 | 60,000 | 60,000 | 60,000 | 60,000 | |
8-3/4 | 71,000 | 71,000 | 71,000 | 71,000 | |||
9 | 83,000 | 83,000 | 79,000 | 74,000 | |||
9-1/4 | 88,000 | 83,000 | 79,000 | 74,000 | |||
9-1/2 | 88,000 | 83,000 | 79,000 | 74,000 | |||
7-5/8 | H-90 | 9 | 72,000 | 72,000 | 72,000 | 72,000 | |
9-1/4 | 85,500 | 85,500 | 85,500 | 85,500 | |||
9-1/2 | 98,000 | 98,000 | 98,000 | 95,500 | |||
8-5/8 | API REGULAR | 10 | 108,000 | 108,000 | 108,000 | 108,000 | |
10-1/4 | 123,000 | 123,000 | 123,000 | 123,000 | |||
10-1/2 | 139,000 | 134,000 | 129,000 | 123,000 | |||
8-5/8 | H-90 | 10-1/4 | 112,500 | 112,500 | 112,500 | 112,500 | |
10-1/2 | 128,500 | 128,500 | 128,500 | 128,500 | |||
7 | H-90 (with low torque face) | 8-3/4 | 67,500 | 67,500 | 66,500 | 62,000 | |
9 | 74,000 | 71,000 | 66,500 | 62,000 | |||
7-5/8 | API REGULAR (with low torque face) | 9-1/4 | 72,000 | 72,000 | 72,000 | 72,000 | |
9-1/2 | 85,000 | 85,000 | 82,000 | 77,000 | |||
9-3/4 | 91,000 | 87,000 | 82,000 | 77,000 | |||
10 | 91,000 | 87,000 | 82,000 | 77,000 | |||
7-5/8 | H-90 (with low torque face) | 9-3/4 | 91.000 | 91.000 | 91.000 | 91.000 | |
10 | 105.000 | 105.000 | 103.000 | 96.000 | |||
10-1/4 | 112.500 | 108.000 | 103.500 | 98.000 | |||
10-1/2 | 112.500 | 108.000 | 103.500 | 98.000 | |||
8-5/8 | API REGULAR (with low torque face) | 10-3/4 | 112,000 | 112,000 | 112,000 | 112,000 | |
11 | 129,000 | 129,000 | 129,000 | 129,000 | |||
8-5/8 | H-90 (with low torque face) | 10-3/4 | 92,500 | 92.500 | 92,500 | 92,500 | |
11 | 110,000 | 110,000 | 110,000 | 110,000 | |||
11-1/4 | 128,000 | 128,000 | 128,000 | 128,000 |
NOTE: IN EACH CONNECTION SIZE AND TYPE GROUP, TORQUE VALUES APPLY TO ALL CONNECTION TYPES IN THE GROUP. WHEN USED WITH THE SAME DRILL COLLAR OUTSIDE COLLAR DIAMETER AND BORE; I.E., 2-3/8″ API I.F., API NC 26 AND 2-7/8″ SLIM HOLE CONNECTIONS USED WITH 3-1/2″ X 1-1/4″ DRILL COLLARS ALL HAVE THE SAME MINIMUM MAKE-UP TORQUE OF 4600 FT.LBS. AND THE BOX IS THE WEAKER MEMBER.
- TORQUE FIGURES PRECEDED BY AN ASTERISK INDICATE THE BOX AS THE WEAKER MEMBER FOR THE CORRESPONDING OUTSIDE DIAMETER (O.D.) AND BORE. THE PIN IS THE WEAKER MEMBER FOR ALL OTHER TORQUE VALUES.
- RECOMMENDED MAKE-UP TORQUE CALCULATIONS ASSUME THE THOROUGH APPLICATION TO ALL THREADS AND SHOULDERS OF A THREAD COMPOUND WHICH CONTAINS EITHER 40 – 60% BY WEIGHT FINELY POWDERED METALIC ZINC OR 60% BY WEIGHT FINELY POWDERED METALIC LEAD AND NEVER MORE THAN 0.3% SULFUR. CALCULATIONS ALSO ASSUME USE OF THE MODIFIED JACK SCREW FORMULA CONTAINED IN API RP7G, APPENDIX A, PARAGRAPH A.8, AND A UNIT STRESS OF 62,500 PSI IN THE BOX OR PIN, WHICHEVER IS WEAKER.
- NORMAL TORQUE RANGE IS TABULATED VALUE PLUS 10%. HIGHER VALUES MAY BE USED UNDER EXTREME CONDITIONS.
- MAKE-UP TORQUE FOR 2-7/8″ PAC BASED ON 87,500 PSI STRESS AND OTHER FACTORS IN 1, ABOVE.
- MAKE-UP TORQUE FOR H-90 BASED ON 56,200 PSI STRESS AND OTHER FACTORS IN 1, ABOVE.
DATA REPRINTED FROM TABLE 3.2, PP 34-36, 14 ED., API RP7G, AUGUST 1, 1990.