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API 7-1 Drilling IiValufa zoMtya
Iivalvu zemitya yokubhola zimisa ulwelo ukuba lungaphumi lunyuke ngomtya wokubhola rhoqo ukuba i-drill ikhaba ngentwana ezantsi. I-LANDRILL inokubonelela ngexabiso leprimiyamu yomgangatho ogcweleyo wokhuseleko ivelufa (FOSV), ivelufa ye-Kelly, isithinteli sokuvuthela ngaphakathi (IBOP), ivalve yokungena ngaphakathi. , Ivalve yokudada.
Igumbi 703 Isakhiwo B, iziko Greenland, Hi-tech uphuhliso zone Xi'an, China
86-13609153141
