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Non-magnetic drill collars superior performance

2014-01-09 16:32:26

Non-magnetic drill collars are our main products. It is made of a low-carbon high-chromium-manganese alloy steel, it has been heavily after the chemical composition ratio of refining and forged its mechanical properties are achieved, with good low permeability and mechanical properties of high strength, excellent intergranular corrosion cracking resistance and excellent resistance to wear. When 1x105/4 π A/m is strength of the magnetic field, the relative magnetic permeability μ of non-magnetic drill collars r ≤ 1.01. Apart along the bore non-magnetic drill collar any 100mm magnetic induction intensity gradient ≤ 0.05μT.
The drill collar is used to increase the pressure for more drilling drill string weight, accelerate the penetration rate. Because of its strong rigidity, good stability, but also played a supporting role of wellbore trajectory of drill. Non-magnetic drill collars are mainly used in oil drilling process.


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