旁通阀旁通阀是当钻井过程中发生溢流，并且钻头水眼被堵无法进行压井时，进行循环或压井的工具。PTF型旁通阀主要适用于井下打捞作业。该工具结构简单、操作方便、性能稳定可靠。在起钻过程中可以有效地控制钻井液从钻具内喷出。大大减少了钻井液喷出后对周围环境的污染。By-PassValveByPassValveisatoolwhichgoesoncirculationorwellcontrol,whenithappensoverflowingduringdrilling,anddrillingheadwaterholeisblockedup,doesnotgoonwellcontrol.Bypassvalveofdrilltoolisusuallyassembledonthetopofbitandonlysubinthedrillingcoursenormally.Whenthewaterholesofbitinboreholecannotcirculateregularly,bypathcirculationwillbecarriedoutbythistooltopreventstickingoftool.Thistooliseasyandreliableinuse.Thestructureofthetoolissimple.Itismadeupofbody,valveseat,shearpin,steelballandoringseal.Bypassvalveofdrilltoolisusuallyassembledonthetopofbitandonlysubinthedrillingcoursenormally.Whenthereispossibilitystickingdrillingtoolsatthetimethatmudcannotcirculateregularlythroughthewaterholeofbitinborehole,oughttocarryoutcirculatingmudtopreventstickingdrilltool.Dropasteelballinboreholeatthetimewhenyouwanttocirculatemud.Aftertheballcomesontothevalveseatofbypassvalve,increasemudpressureto18-25MPauntilthetwoshearpinsarecutoff.Mudpushesvalveseatdownwa***toshowthefourobliqueholesthroughwhichbypathcirculationcancarryout.Soyoucaneffectivelypreventstickingofdrilltool.旁通阀技术参数SpecificationofBy-PassValve型号Type外径O.D.(mm)内径I.D.(mm)接头螺纹Connection上端UpperEnd下端LowerEndPTF14614665NC38NC38PTF15915970NC50NC50PTF16516570NC50NC50PTF17817875NC50NC50PTF1801847551/2″FHNC50PTF1901908051/2″FHNC50PTF2002009051/2″FHNC50PTF21021011451/2″FHNC50)