Dongying Oilman Machinery Equipment Co.,Ltd.
| Payment Terms | T/T, Western Union, MoneyGram |
| Supply Ability | 500 pcs per month |
| Delivery Time | 20-30 days |
| Packaging Details | In Bundles |
| Product Name | Rotary Square Kelly/Hexagonal Kelly Of Oil Drilling Equipment |
| Keywords | Square Kelly |
| Application | Oil & Gas Well Drilling |
| Hardness | 285 to 341 BHN |
| Size | 3", 3-1/2", 4-1/4", 5-1/4", 6" |
| Material | AISI 4145H |
| Brand Name | |
| Model Number | Square Kelly & Hexagonal Kelly |
| Certification | ISO |
| Place of Origin | China |
View Detail Information
Explore similar products
Oil Drilling Inside BOP Drop In Check Valve For Drill Stem Lower Safety Valves
Inside BOP Upper Lower Kelly Cock Valve For Drill String
Oil Well Downhole Float Valve Stabilizer ISO Standard Non Magnetic Tungsten
17 1/2" Drill String Components , forging Integral Blade Stabilizer
Product Specification
| Payment Terms | T/T, Western Union, MoneyGram | Supply Ability | 500 pcs per month |
| Delivery Time | 20-30 days | Packaging Details | In Bundles |
| Product Name | Rotary Square Kelly/Hexagonal Kelly Of Oil Drilling Equipment | Keywords | Square Kelly |
| Application | Oil & Gas Well Drilling | Hardness | 285 to 341 BHN |
| Size | 3", 3-1/2", 4-1/4", 5-1/4", 6" | Material | AISI 4145H |
| Brand Name | Model Number | Square Kelly & Hexagonal Kelly | |
| Certification | ISO | Place of Origin | China |
| High Light | Oil Well Drill Pipe 3" ，Rotary Kelly Drill Pipe ，Hexagonal Kelly Drill String Components | ||
Kelly is the main driver of the whole drill string.It transmits torsional energy from the rotary table through the drill string to the bit at the bottom of the hole. Kelly is a long square or hexagonal.precision machined heavy steel bar that is supported by the swivel through the rotary table and is connected to the first joint of drill pipe in the drill string.
Straightness of the kelly is very crucial in the manufacturing process, thus straightness inspection are carried out before, during and after each machining operation. The flats are precision-milled to API specification.All milling processes are performed on specially designed rigid kelly mills to ensure tight tolerances and high quality drive section.Each kelly is furnished with a pressed steel thread protectors.
Features and Benefits
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;
Ultrasonic inspection is performed on all section;
Shipped in a protective steel -cased scabbard;
When ordering please specify:
Kelly type (Square or hexagonal)
Nominal size and overall length
Upper and lower connection
Technical specification and parameters
| STANDARD SIZE FOR SQUARE KELLY | ||||||||||
| Size (in) | Length (ft) Top upset joint | Bottom upset | Bore | Drive Section | Weight | |||||
| A | B | LH | OD C (in) | RH | OD (in) | E (in) | F (in) | G (in) | (Ib) | |
| 2 1/2 | 40 | 37 | 6 5/8" Reg | 7 3/4 | 2 3/8 IF | 3 3/8 | 1 1/4 | 3 1/4 | 2 1/2 | 902 |
| 46 | 43 | 6 5/8" Reg | 7 3/4 | 2 3/8 IF | 3 3/8 | 1 1/4 | 3 1/4 | 2 1/2 | 1023 | |
| 3 | 40 | 37 | 6 5/8" Reg | Apr-73 | 2 7/8IF | 4 1/8 | 1 3/4 | 3 7/8 | 3 | 1089 |
| 46 | 43 | 6 5/8" Reg | 7 3/4 | 2 7/8IF | 4 1/8 | 1 3/4 | 3 7/8 | 3 | 1232 | |
| 3 1/2 | 40 | 37 | 6 5/8" Reg | 7 3/4 | 3 1/21F | 4 3/4 | 2 1/4 | 4 7/16 | 3 1/2 | 1320 |
| 46 | 43 | 6 5/8" Reg | 7 3/4 | 3 1/21F | 4 3/4 | 2 1/4 | 4 7/16 | 3 1/2 | 1474 | |
| 54 | 51 | 6 5/8" Reg | 7 3/4 | 3 1/21F | 4 3/4 | 2 1/4 | 4 7/16 | 3 1/2 | 1716 | |
| 4 1/4 | 40 | 37 | 6 5/8" Reg | 7 3/4 | 4 IF | 6 | 2 13/16 | 5 1/2 | 4 1/4 | 1815 |
| 46 | 43 | 6 5/8" Reg | 7 3/4 | 4 IF | 6 | 2 13/16 | 5 1/2 | 4 1/4 | 2068 | |
| 54 | 51 | 6 5/8" Reg | 7 3/4 | 4 IF | 6 | 2 13/16 | 5 1/2 | 4 1/4 | 2354 | |
| 5 1/4 | 40 | 37 | 6 5/8" Reg | 7 3/4 | NC50 | 7 | 3 1/4 | 6 7/8 | 5 1/4 | 2750 |
| 46 | 43 | 6 5/8" Reg | 7 3/4 | NC50 | 7 | 3 1/4 | 6 7/8 | 5 1/4 | 3146 | |
| 54 | 51 | 6 5/8" Reg | 7 3/4 | NC50 | 7 | 3 1/4 | 6 7/8 | 5 1/4 | 3674 | |
| 6 | 40 | 37 | 6 5/8" Reg | 7 3/4 | 6 5/8 FH | 8 | 3 1/2 | 7 5/8 | 6 | 3674 |
| 46 | 43 | 6 5/8" Reg | 7 3/4 | 6 5/8 FH | 8 | 3 1/2 | 7 5/8 6 | 6 | 4224 | |
| 54 | 51 | 6 5/8" Reg | 7 3/4 | 6 5/8 FH | 8 | 3 1/2 | 7 5/8 | 6 | 4950 | |
| STANDARD SIZE FOR HEX KELLY | ||||||||||
| Size | Length (ft) | Top upset joint | Bottom upset | Bore | Drive Section | Weight | ||||
| (in) | A | B | LH | OD C (in) | RH | OD (in) | E (in) | F (in) | G (in) | (lb) |
| 3 | 40 | 37 | 6 5/8" Reg | 7 3/4 | 2 3/8IF | 3 3/8 | 1 1/2 | 3 3/8 | 3 | 990 |
| 46 | 43 | 6 5/8" Reg | 7 3/4 | 2 3/8IF | 3 3/8 | 1 1/2 | 3 3/8 | 3 | 1100 | |
| 3 1/2 | 40 | 37 | 6 5/8" Reg | 7 3/4 | 2 7/8IF | 4 1/8 | 1 3/4 | 4 15/16 | 3 1/2 | 1276 |
| 46 | 43 | 6 5/8" Reg | 7 3/4 | 2 7/8IF | 4 1/8 | 1 3/4 | 4 15/16 | 3 1/2 | 1474 | |
| 54 | 51 | 6 5/8" Reg | 7 3/4 | 2 7/8IF | 4 1/8 | 1 3/4 | 4 15/16 | 3 1/2 | 1716 | |
| 4 1/4 | 40 | 37 | 6 5/8" Reg | 7 3/4 | 3 1/21F | 4 3/4 | 2 1/4 | 4 25/32 | 4 1/4 | 1650 |
| 46 | 43 | 6 5/8" Reg | 7 3/4 | 3 1/21F | 4 3/4 | 2 1/4 | 4 25/32 | 4 1/4 | 1848 | |
| 54 | 51 | 6 5/8" Reg | 7 3/4 | 3 1/21F | 4 3/4 | 2 1/4 | 4 25/32 | 4 1/4 | 2156 | |
| 5 1/4 | 40 | 37 | 6 5/8" Reg | 7 3/4 | 4 IF | 6 | 213/16 | 5 29/32 | 5 1/4 | 2244 |
| 46 | 43 | 6 5/8" Reg | 7 3/4 | 4 IF | 6 | 2 13/16 | 5 29/32 | 5 1/4 | 2574 | |
| 54 | 51 | 6 5/8" Reg | 7 3/4 | 4 IF | 6 | 2 13/16 | 5 29/32 | 5 1/4 | 2970 | |
| 6 | 40 | 37 | 6 5/8" Reg | 7 3/4 | 4 1/2IF | 7 | 3 1/2 | 6 13/16 | 6 | 2904 |
| 46 | 43 | 6 5/8" Reg | 7 3/4 | 4 1/2IF | 7 | 3 1/2 | 6 13/16 | 6 | 3300 | |
| 54 | 51 | 6 5/8" Reg | 7 3/4 | 4 1/21F | 7 | 3 1/2 | 6 13/16 | 6 | 3894 | |
| KELLY COCK | ||||||||||
| OD: 4 3/4, 5 5/16, 6 5/8, 7, 7 1/4, 7 3/4, 8 inch. The body is made of a single piece of forged AISI 4145 H modified alloy steel, full treated to 285-341 Brinell Hardness and 40 ft-lb | ||||||||||
Any enquiry please contact us by email: christal@oilmancn.com.
Visit our website: www.oilmanchina.com for more products information.
Our WhatsApp/WeChat:+86 13475294399
Company Details
Business Type:
Manufacturer,Exporter,Trading Company,Seller
Year Established:
2017
Total Annual:
100,0000-1000,000
Employee Number:
10~50
Ecer Certification：
Verified Supplier
Machinery Equipment is manufacturer & stockiest of equipments, services and solutions to the upstream to downstream in oil & gas industry. We are aimed at helping customers to obtain the maximum from their each well, providing our customers superior quality at the best value for products... Machinery Equipment is manufacturer & stockiest of equipments, services and solutions to the upstream to downstream in oil & gas industry. We are aimed at helping customers to obtain the maximum from their each well, providing our customers superior quality at the best value for products...
Get in touch with us
Leave a Message, we will call you back quickly!