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Products tagged with 'non-magnetic drill collars (nmdc)'

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Picture for A Review of Corrosion-Related Failures and Preventive Measures on Non-Magnetic Cr-Mn Austenitic Stainless Steel Drill Collars
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A Review of Corrosion-Related Failures and Preventive Measures on Non-Magnetic Cr-Mn Austenitic Stainless Steel Drill Collars

Product Number: 51323-19370-SG
Author: Flavia Kudla, Yao Yao, Manuel Marya
Publication Date: 2023
$20.00

Drill collars are thick-walled pipes that provide stiffness and concentration of mass at or near the bit and are among the main components of the bottom-hole assembly (BHA). The non-magnetic drill collars (NMDCs) represent a sub-category of proprietary drill collars that enable magnetic surveying and directional drilling. Due to their cross-section, NMDCs are inherently heavy and can convey a strong push on the drill bit itself, minimizing cutting instability problems, while their strength is sufficient to prevent buckling while drilling.
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