Rotary Square Kelly / Hexagonal Kelly of Oil Drilling Equipment
Product Introduction
Kelly is located in the top of the drill string, with square and hexagonal. In rotary drilling, when it is drilling, kelly connected with square bushing and rotary bushing, transfer the ground rotary torque to drill pipe and to drive the drill bit,bearing the weight of the drill string.In the drilling of the turbine and screw, the weight of the drill string and the counter torque are supported.
Our Square& Hexagonal kelly are made from AISI 4145H modified alloy bars that are quenched and tempered full length. After such heat treatment, its brinell hardness can reach 285-341. Kelly's end, drive cross-section and joint are all processed and tested comform to API criterion.
Advantages of Our Square & Hexagonal Kelly
- Ultrasonic inspection is performed on all section.
- Shipped in a protective steel -cased scabbard.
- Manufactured from AISI4145H-modified, fully heat-treated alloy steel with a Brinell hardness range of 285-341BHN and a minimum average Charpy impact value of 40ft-Ibs.
- Ends and drive section,IDs and connections machined and inspected to API specification.
When ordering please specify
- Upper and lower connection.
- Kelly type (Square or hexagonal).
- Nominal size and overall length.
Specifications of Our Square & Hexagonal Kelly
| Kelly size | 63.5 | 76.2 | 88.9 | 108 | 108 | 133.4 | 133.4 |
| 2 1/2 | 3 | 3 1/2 | 4 1/4 | 4 1/4 | 5 1/4 | 5 1/4 |
| Lengthdrive Section | LD Standard | 11280 | 11280 | 11280 | 11280 | 11280 | 11280 | 11280 |
| LD optional | | | | 15540 | 15540 | 15540 | 15540 |
| Lengthoverall | L Standard | 12190 | 12190 | 12190 | 12190 | 12190 | 12190 | 12190 |
| L optional | | | | 16460 | 16460 | 16460 | 16460 |
| Length Drive Section | DFL Across flate | 63.5 | 76.2 | 88.9 | 108 | 108 | 133.4 | 133.4 |
| DC Across cornere | 83.3 | 100 | 115.1 | 141.3 | 141.3 | 175.4 | 175.4 |
| DCC Across flate | 82.55 | 98.43 | 122.7 | 139.7 | 139.7 | 171.45 | 171.45 |
| RC Radlue | 7.9 | 9.5 | 12.7 | 12.7 | 12.7 | 15.9 | 15.9 |
| RCC Radlue | 41.3 | 49.2 | 56.4 | 69.9 | 69.9 | 85.7 | 85.7 |
| Wall thickness eccentric bore | 11.43 | 11.43 | 11.43 | 12.07 | 12.07 | 15.88 | 15.88 |
| Upper box connection | Thread size and style LF | Standard | 6 5/8 REG | 6 5/8 REG | 6 5/8 REG | 6 5/8 REG | 6 5/8 REG | 6 5/8 REG | 6 5/8 REG |
| Optional | 4 1/2 REG | 4 1/2 REG | 4 1/2 REG | 4 1/2 REG | 4 1/2 REG | | |
| OD | Du Standard | 196.9 | 196.9 | 196.9 | 196.9 | 196.9 | 196.9 | 196.9 |
| Du Optional | 146.1 | 146.1 | 146.1 | 146.1 | 146.1 | | |
| Bevel diameter | Lu | 406.4 | 406.4 | 406.4 | 406.4 | 406.4 | 406.4 | 406.4 |
| DF Standard | 186.1 | 186.1 | 186.1 | 186.1 | 186.1 | 186.1 | 186.1 |
| DF Optional | 134.5 | 134.5 | 134.5 | 134.5 | 134.5 | | |
| Lower pin connection | Label | NC26 | NC31 | NC38 | NC46 | NC50 | 5 1/2 FH | NC56 |
| Outsize diameter | 85.7 | 104.8 | 120.7 | 158.8 | 161.9 | 177.8 | 177.8 |
| LL | 508 | 508 | 508 | 508 | 508 | 508 | 508 |
| DF Bevel diameter | 82.9 | 100.4 | 116.3 | 145.3 | 154 | 170.7 | 171.1 |
| Inside diameter | 31.8 | 44.5 | 57.2 | 71.4 | 71.4 | 82.6 | 82.6 |
Xi'an TianRui Petroleum Machinery Equipment Company Limited is a professional supplier of various oilfield equipment, including oil drilling and service equipment,oil production equipment,OCTG ,wellhead & downhole tools and spare parts with API certification. Our products have already been exported to USA, South America, Africa, Middle East, Russia and some other countries (regions). We have become VIP (assigned) supplier and built strategic partnership with some coutries' national petroleum companies.
Competitive Advantages
1. We offer high quality products at competitive price.
2. Shortest delivery time.
3. Flexible payment terms.
4. Timely after-sale service.
5. Most of our equipment can be replaceable with international brands.
6. Our products have been exported to Argentina, Egypt, US, Australia, Romania, Pakistan, Dubai, Abu Dhabi, Iran, India, Indonesia, Vietnam, Malaysia and many other countries.
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Solids Control 4145H Rotary Square Kelly Drill Spare Parts Images
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