定向弯接头定向弯接头是动力钻具专用的造斜接头。动力钻具在弯接头的作用下给钻头持续的侧向力,使钻头连续侧向切削井壁,钻成曲线井身轨迹。分固定角度弯接头和可变角度弯接头两种。OrientedBentSubOrientedBentsubisaamajorpowerdeflectiontoolh***ingafixedangleadeviatedfromlowendthreadofthebentsubtoaxiaallineofdrilstem,thepowerdrilltoolundertheapplicationoforientedbentsubgivesthebitac***tantlateralforcetoensurethatthebitcancutonthewell-walllaterallyandfurtherdrillintoacurvedwelltrace.Itisdividedintotwokindsoffixedanglebentsubandvariablebentsub.定向弯接头技术参数SpecificationofOrientedBentSub型号type外径O.D.mm(in)连接螺纹Connection弯曲角度a(度)BentAngle定向套内径I.D.OfOrientingSleeve(mm)母扣BOX公扣PINDZT8989(31/2)NC26NC261.5362DZT140140(51/2)NC38NC380～3.536DZT159159(61/4)N***641/2REG50DZT165165(61/2)NC50NC5050DZT178178(7)51/2FH51/2FH50DZT203203(8)65/8REG65/8REG50)