Henan Shenlong Petroleum Drilling Tools Co., Ltd

The non-magnetic drilling tools of Henan DPCA Oil Drilling Tools include non-magnetic drill collars/elastic rubidium, stabilizers, MWD components, etc.
The material is high purity austenitic stainless steel.
The strict control of chemical composition and the special forging process ensure the excellent mechanical properties of the DPCA non-magnetic drilling tool.
Corrosion resistance requirements: All non-magnetic products of DPCA can pass the corrosion test specified in ASTM A 262 Practice E.
Non-magnetic:
Relative permeability: 1.005 maximum
Hot-spot/field gradient: MAX ±0.05μT
Special handling of id: roller polishing.
(Anti-compressive layer is formed after rolling),
The advantages are as follows:
Increased corrosion resistance;
Increase the surface hardness of the hole to HB400;
Increase the surface finish of the well to Ra≤3.2 μm
Testing and inspection of each bar during nmDC, stabilizer and MWD part production:
Chemical composition;
Tensile testing;
Crash testing;
Hardness testing;
Metallographic testing (grain size);
Corrosion testing (according to ASTM A 262 Practice E);
Ultrasonic testing on the entire length of the bar (according to ASTM A 388);
Relative permeability test;
Hotspot testing
Dimensional checks