P530 Non-Magnetic Drill Collars Factory Supplier
Non-magnetic drill collars have unusual design requirements, and as a result pose unique problems of corrosion resistance. Drill collars are the bottom components in a drill string, where their weight generates the force on the drill bit allowing it to drill and their stiffness allows the force to be transmitted without buckling. Conventional drill collars are made of alloy steel, like the rest of the drill string, and their corrosion usually poses no problems except to their threaded connections. A typical drill collar is 30 feet long and 4 to 9 inches in diameter.
P530 is a special non-mag, austenitic Mn-Cr-N-steel with a Nickel-content of < 2%
| Element | P530P530 HS |
| Carbon | max. 0.05 |
| Manganese | 18.50-20.00 |
| Chromium | 13.00-14.00 |
| Molyddenum | 0.40-0.60 |
| Nitrogen | 0.25-0.40 |
| Nickel | max. 1.50 |
Following mechanical properties (tested at room temperature) are achieved by a special cold-working process over the full length of the collar：
| Yield Strength (min.)： OD less than 4″ | 120 ksi | 830 N/mm2 |
| 0,2%-offset method OD 4″ to 9*’ | 110 ksi | 760 N/mm2 |
| OD 91/2″ and larger | 100 ksi | 690 N/mm2 |
| Tensile Strength OD less than 4″ | 130 ksi | 900 N/mm2 |
| OD 4 and larger | 120 ksi | 830 N/mm2 |
| Elongation (min.)： | 25% | 25% |
| Reduction of area (min.)： | 50% | 50% |
| Impact energy (min.)： | 90 ft.lb | 122 J |
| Hardness Brinell： (min.)： | 260-350 HB | 260-350 HB |
Three Type of Non-magnetic Drill Collar We Produce
1-Slick Non-Mag Drill Collar
Slick Non-Mag Drill Collar provide the required weight on bit, and will not interfere with the directional drilling ability.
2-Spiral Non-Mag Drill Collar
Spiral Non-Mag Drill Collar is designed to allow greater flow area for drilling fluids, while providing the benefits of non-mag steel for complex drilling programs.
3-Flex Non-Mag Drill Collar
Flex Non-Mag Drill Collar is thinner and more flexible than standard drill collar. Their ability to make short radius turns, bend for high build angles, and pass through severe doglegs makes them ideal for use in directional and horizontal applications. Manufactured with non-mag steel, this drill collar is well suited for housing MWD equipment.
Grades of Non-Mag Drill Collar We Supply
P530 Non-Mag Drill Collar
P530 HS Non-Mag Drill Collar
P540 Non-Mag Drill Collar
P550 Non-Mag Drill Collar
P580 Non-Mag Drill Collar
P650 Non-Mag Drill Collar
P650 HS Non-Mag Drill Collar
P690 Non-Mag Drill Collar
P750 Non-Mag Drill Collar
P750 HS Non-Mag Drill Collar
