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What are the common characteristics of non magnetic drill collars?
release time：2024-03-04
source： network
I believe everyone has some understanding of non-magnetic drill collars, but how much do you know about the characteristics of drill collars? Here are a few points to summarize for everyone:
1. Non magnetic drill collars are mainly used for monitoring during oil drilling, and their structure is the same as the overall drill collar.Non magnetic drill collars are made of N1310 low-carbon alloy steel, which is forged through strict chemical composition analysis. This material has been tested for mechanical properties and can meet the standards in terms of hardness, toughness, impact value, and performance. It has good low magnetic permeability and good mechanical processing performance.
2. The overall drill collar is a smooth thick walled circular tube, with connecting threads machined at both ends.
3. Spiral drill collars are used to machine three right-handed spiral grooves on the outer cylindrical surface of circular drill collars, in order to reduce the contact area with the wellbore wall and effectively prevent pressure difference and sticking.
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