Model:API, NS-1
Zhongyuan International offers a full range of Non-Magnetic Stainless Steel Drill Collars for Horizontal and Directional drilling applications.
Chemical Element | C ≤0.04 | Si ≤0.60 | Mn 19.0~22.0 | S ≤0.010 | P ≤0.030 | Cr 13.0~15.0 | ||||||||
Mo 0.4~0.6 | Ni 1.0~3.0 | Cu ≤0.20 | N 0.28~0.45 | Nb ≤0.20 | Al ≤0.025 | |||||||||
MECHANICAL PROPERTY AT 1” SUB SURFACE | ||||||||||||||
Bar OD Range | Mini Yield Stength Rp 0.2% | Mini Tensile Strength Rm | Mini Elongation A% | Mini Reduction of Area Z% | Mini Impact strength at 20℃ | |||||||||
Inches | mm | Mpa | PSI | Mpa | PSI | % | % | Joules | ||||||
3 1/8 - 6 7/8 | 79.4 – 174.6 | 800 | 116 000 | 930 | 135 000 | 25 | 50 | 100 | ||||||
7 - 14 | 177.8 – 279.4 | 770 | 112 000 | 900 | 130 000 | 25 | 50 | 100 | ||||||
Magnetic Permeability
- 1.009 Maximum
Corrosion Resistance
- To deter stress corrosion cracking, all of our Non-Mag material has the ID treated with a shot peening operation. This compresses the inside diameter, and has been very successful in preventing stresses from forming while drilling in chloride or H2S atmospheres (sour gas) drilling environments.
Warranty
- Non-Mag is accompanied with a warranty for standard mill coverages, as well as a warranty against stress corrosion cracking. (A copy of the warranty is available upon request.)
Available Sizes - Ready to Deploy
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4¾” OD x 2¼” ID x 31’ | |
6¼” OD x 2¼” ID x 31’ | |
6¼” OD x 213/16” ID x 31’ | |
6½” OD x 2¼” ID x 31’ | |
6½” OD x 213/16” ID x 31’ | |
7” OD x 213/16” ID x 31’ | |
7¼” OD x 213/16” ID x 31’ | |
7¾” OD x 213/16” ID x 31’ | |
8” OD x 213/16” ID x 31’ | |
8½” OD x 213/16” ID x 31’ | |
9” OD x 3” ID x 31’ | |
9½” OD x 3” ID x 31’ |
- Other Sizes Available on Request
Minimizing Magnetic Surveys Errors
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