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VR Safety Joint

Xi'an ZZ Top Oil Tools Co.,Ltd is one of the top level vr safety joint manufacturers and suppliers,Website:, with professional factory, we are able to produce API and oilfield dst vr safety joint, open hole vr safety joint, well testing vr safety joint, welcome to contact us. Briefly Introduce:   VR Safety joint is a compact, right-hand safety joint used in the drill stem testing string. It is run immediately above the packer assembly to ensure that a minimum number of tools are left in the hole if it becomes necessary to release the  safety joint. The tool’s bypass feature acts as an auxiliary to the Hydro spring tester bypass to allow fluid to pass  though  the packer while the work string is being pulled out of the hole.   A spline and lug arrangement, joining the male and female parts of the left-hand safety joint thread, lock to prevent  unintentional back-off from the tool during normal manipulation of the drill pipe during testing. Because of the spline  and lug configuration, the slips must be dropped in place before the drill pipe is lowered after every stand of pipe is  pulled out of the hole. Features  *Operate the testing string from both ends to make sure the tool can move up and down in 210mm at least. *Make the limited position on the testing string. Specification Size/in OD/        mm ID/  mm           Working  pressure  / Mpa Service  environment Working  temperature Connection 3 7/8” 98.5 45 70 105 Mud, Crude Oil,  Natural gas with  H2S and acid --29oC ~ +204oC EUE IF CAS      5" 127.5 57


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