• Kelly is manufactured strictly according to API Spec7-1 standard. Manufactured from AISI 4145H-modified, fully heat-treated alloy steel with aBrinell hardness range of 285-341 and a minimum average Charpy impact value of 40 ft-lbs.
• The end, drive section and connection of Kelly are machined and inspected according to API standard.
• Ends and drive sections, IDs and connections machined and inspected to API specifications.
• Kelly bars are ultrasonically inspected over full length and section.
• Shipped in a protective steel-cased scabbard.
Item | Name | Standard | Size | Upper box connection(LH) | Lower pin connection | Drive | Overall length | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Connection | O.D in | Bevel diameter mm | Upset length | Connection | OD. in | ID. | Bevel diameter mm | Upset length | Section length | ||||||
in | ±0.8 | ±0.4 | in | ±0.8 | in | ±0.4 | in | ft | ft | ||||||
1 | Square Kelly | Standard | 2.1/2 | 6.5/8"REG | 7.3/4 | 186.1 | 16 | NC26 | 2.3/8"IF | 3.3/8 | 1.1/4 | 83 | 20 | 37 | 40 |
2 | Square Kelly | Optional | 2.1/2 | 4.1/2"REG | 5.3/4 | 134.5 | 16 | NC26 | 2.3/8"IF | 3.3/8 | 1.1/4 | 83 | 20 | 37 | 40 |
3 | Square Kelly | Standard | 3 | 6.5/8"REG | 7.3/4 | 186.1 | 16 | NC31 | 2.7/8"IF | 4.1/8 | 1.3/4 | 100.4 | 20 | 37 | 40 |
4 | Square Kelly | Optional | 3 | 4.1/2"REG | 5.3/4 | 134.5 | 16 | NC31 | 2.7/8"IF | 4.1/8 | 1.3/4 | 100.4 | 20 | 37 | 40 |
5 | Square Kelly | Standard | 3.1/2 | 6.5/8"REG | 7.3/4 | 186.1 | 16 | NC38 | 3.1/2"IF | 4.3/4 | 2.1/4 | 116.3 | 20 | 37 | 40 |
6 | Square Kelly | Optional | 3.1/2 | 4.1/2"REG | 5.3/4 | 134.5 | 16 | NC38 | 3.1/2"IF | 4.3/4 | 2.1/4 | 116.3 | 20 | 37 | 40 |
7 | Square Kelly | Standard | 4.1/4 | 6.5/8"REG | 7.3/4 | 186.1 | 16 | NC46 | 4"IF | 6.1/4 | 2.13/16 | 145.2 | 20 | 37 | 40 |
8 | Square Kelly | Standard | 4.1/4 | 6.5/8"REG | 7.3/4 | 186.1 | 16 | NC50 | 4.1/2"IF | 6.3/8 | 2.13/16 | 154 | 20 | 37 | 40 |
9 | Square Kelly | Optional | 4.1/4 | 4.1/2"REG | 5.3/4 | 134.5 | 16 | NC46 | 4"IF | 6.1/4 | 2.13/16 | 145.2 | 20 | 37 | 40 |
10 | Square Kelly | Optional | 4.1/4 | 4.1/2"REG | 5.3/4 | 134.5 | 16 | NC50 | 4.1/2"IF | 6.3/8 | 2.13/16 | 154 | 20 | 37 | 40 |
11 | Square Kelly | Standard | 4.1/4 | 6.5/8"REG | 7.3/4 | 186.1 | 16 | NC46 | 4"IF | 6.1/4 | 2.13/16 | 145.2 | 20 | 51 | 54 |
12 | Square Kelly | Standard | 4.1/4 | 6.5/8"REG | 7.3/4 | 186.1 | 16 | NC50 | 4.1/2"IF | 6.3/8 | 2.13/16 | 154 | 20 | 51 | 54 |
13 | Square Kelly | Optional | 4.1/4 | 4.1/2"REG | 5.3/4 | 134.5 | 16 | NC46 | 4"IF | 6.1/4 | 2.13/16 | 145.2 | 20 | 51 | 54 |
14 | Square Kelly | Optional | 4.1/4 | 4.1/2"REG | 5.3/4 | 134.5 | 16 | NC50 | 4.1/2"IF | 6.3/8 | 2.13/16 | 154 | 20 | 51 | 54 |
15 | Square Kelly | Standard | 5.1/4 | 6.5/8"REG | 7.3/4 | 186.1 | 16 | 5.1/2"FH | 7 | 3.1/4 | 170.6 | 20 | 37 | 40 | |
16 | Square Kelly | Standard | 5.1/4 | 6.5/8"REG | 7.3/4 | 186.1 | 16 | NC56 | 7 | 3.1/4 | 171 | 20 | 37 | 40 | |
17 | Square Kelly | Standard | 5.1/4 | 6.5/8"REG | 7.3/4 | 186.1 | 16 | 5.1/2"FH | 7 | 3.1/4 | 170.6 | 20 | 51 | 54 | |
18 | Square Kelly | Standard | 5.1/4 | 6.5/8"REG | 7.3/4 | 186.1 | 16 | NC56 | 7 | 3.1/4 | 171 | 20 | 51 | 54 | |
19 | Hex Kelly | Standard | 3 | 6.5/8"REG | 7.3/4 | 186.1 | 16 | NC26 | 2.3/8"IF | 3.3/8 | 1.1/4 | 82.9 | 20 | 37 | 40 |
20 | Hex Kelly | Optional | 3 | 4.1/2"REG | 5.3/4 | 134.5 | 16 | NC26 | 2.3/8"IF | 3.3/8 | 1.1/4 | 82.9 | 20 | 37 | 40 |
21 | Hex Kelly | Standard | 3.1/2 | 6.5/8"REG | 7.3/4 | 186.1 | 16 | NC31 | 2.7/8"IF | 4.1/8 | 1.3/4 | 100.4 | 20 | 37 | 40 |
22 | Hex Kelly | Optional | 3.1/2 | 4.1/2"REG | 5.3/4 | 134.5 | 16 | NC31 | 2.7/8"IF | 4.1/8 | 1.3/4 | 100.4 | 20 | 37 | 40 |
23 | Hex Kelly | Standard | 4.1/4 | 6.5/8"REG | 7.3/4 | 186.1 | 16 | NC38 | 3.1/2"IF | 4.3/4 | 2.1/4 | 116.3 | 20 | 37 | 40 |
24 | Hex Kelly | Optional | 4.1/4 | 4.1/2"REG | 5.3/4 | 134.5 | 16 | NC38 | 3.1/2"IF | 4.3/4 | 2.1/4 | 116.3 | 20 | 37 | 40 |
25 | Hex Kelly | Optional | 4.1/4 | 6.5/8"REG | 7.3/4 | 186.1 | 16 | NC38 | 3.1/2"IF | 4.3/4 | 2.1/4 | 116.3 | 20 | 51 | 54 |
26 | Hex Kelly | Optional | 4.1/4 | 4.1/2"REG | 5.3/4 | 134.5 | 16 | NC38 | 3.1/2"IF | 4.3/4 | 2.1/4 | 116.3 | 20 | 51 | 54 |
27 | Hex Kelly | Standard | 5.1/4 | 6.5/8"REG | 7.3/4 | 186.1 | 16 | NC46 | 4"IF | 6.1/4 | 3 | 145.2 | 20 | 37 | 40 |
28 | Hex Kelly | Standard | 5.1/4 | 6.5/8"REG | 7.3/4 | 186.1 | 16 | NC50 | 4.1/2"IF | 6.3/8 | 3.1/4 | 154 | 20 | 37 | 40 |
29 | Hex Kelly | Optional | 5.1/4 | 6.5/8"REG | 7.3/4 | 186.1 | 16 | NC46 | 4"IF | 6.1/4 | 3 | 145.2 | 20 | 51 | 54 |
30 | Hex Kelly | Optional | 5.1/4 | 6.5/8"REG | 7.3/4 | 186.1 | 16 | NC50 | 4.1/2"IF | 6.3/8 | 3.1/4 | 154 | 20 | 51 | 54 |
31 | Hex Kelly | Standard | 6 | 6.5/8"REG | 7.3/4 | 186.1 | 16 | 5.1/2"FH | 7 | 3.1/2 | 170.6 | 20 | 37 | 40 | |
32 | Hex Kelly | Standard | 6 | 6.5/8"REG | 7.3/4 | 186.1 | 16 | NC56 | 7 | 3.1/2 | 171 | 20 | 37 | 40 | |
33 | Hex Kelly | Standard | 6 | 6.5/8"REG | 7.3/4 | 186.1 | 16 | 5.1/2"FH | 7 | 3.1/2 | 170.6 | 20 | 51 | 54 | |
34 | Hex Kelly | Standard | 6 | 6.5/8"REG | 7.3/4 | 186.1 | 16 | NC56 | 7 | 3.1/2 | 171 | 20 | 51 | 54 |