The non-magnetic drill collar is made of low chromium manganese alloy steel, which is forged through strict chemical composition analysis. All non-magnetic drill collars produced from ShengjiPetro have been tested for mechanical properties to ensure that their hardness, toughness, impact value and corrosion resistance meet the standards, with good low magnetic permeability and good machining performance.
The non-magnetic drill collar manufactured from ShengjiPetro is made of stainless alloy steel with low magnetic permeability, and the cross-section of the pipe body is round.
The structure of non-magnetic drill collars is the same as that of ordinary drill collars, but their chemical composition and mechanical properties are different from those of ordinary drill collars. Nonmagnetic drill collar is a kind of drilling tool with special functions in directional well engineering. When the magnetic inclinometer is used to measure the inclination and azimuth of the borehole in directional wells, in order to protect the compass from the magnetic field of the drill string, a certain length of non-magnetic drill collar must be equipped in the drill string, so that the magnetic inclinometer can be located at a suitable position in the non-magnetic drill collar to measure the inclination, otherwise the correct measurement results cannot be obtained.