http://www.trsolidscontrol.comExport DepartmentSunny LeePhone: 86 - 29 - 86332929/86 - 13186019379Fax: 86 - 29 - 863329149
No.10, West Of North Second Ring, Weiyang District, Xian, Shaanxi, 710016, ChinaXi an, ShaanxiChina, 710016Web Page Link: https://www.toboc.com/xiantianruipetroleummachinerycoltd.aspx
The major function of spiral drill collar: It is to prevent drilling tools from pressure differential block during drilling, the spiral groove allows the mud flow freely around the drill collar to balance pressure preventing pressure block, so effectively avoid bit sticking from differential pressure. Spiral collar can also reduce the contact area between the wall and tubular body, so as to avoid from sticking phenomenon of drill string.
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Xi an TianRui Petroleum Machinery Equipment Co.,Lt