钻具常用接头尺寸.doc

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1、钻具常用接头尺寸常用接头本体扣型公接头母扣镗孔直径接头类型大端直径小头直径127mm（5”）钻杆、178mm（7”）钻铤411*410133.5114.3134.91NC50/数字型4-1/2”IF内平型158mm(6-1/4”)钻铤4A11*4A10122.7103.73124.61NC46/数字型4”IF内平型88.9mm(3-1/2”),120.65mm(4-3/4”)钻铤311*310102.0085.06103.583-1/2”IF内平型73mm(2-7/8”)钻铤，104.78(4-1/8”)钻铤211*2

2、1086.1371.3187.712-7/8”IF内平型方钻杆公扣521*520147.95126.79150.025-1/2”FH贯眼型刮刀钻头扣，公母锥扣421*420121.7296.31123.834-1/2”FH贯眼型914.4mm（36“）钻头，914.4mm扩大器731*730177.8144.47180.187-5/8”REG正规型660.4mm（26“）钻头，731*730177.8144.47180.187-5/8”REG正规型444.5mm(17-1/2”)钻头，228.6mm(9”)钻铤731*

3、730177.8144.47180.187-5/8”REG正规型346.1mm（13-5/8“）钻头，210mm动力钻具631*630152.19131.03153.996-5/8”REG正规型311.15mm(12-1/4”)钻头，203.2mm(8”)钻铤631*630152.19131.03153.996-5/8”REG正规型196.85mm(7-3/4”)动力钻具531*530140.21110.06171.45mm(6-3/4”)动力钻具，215.9mm(8-1/2”)钻头431*430117.4790.47

4、119.064-1/2”REG正规型152.4mm(6”)钻头，120.65mm(4-3/4”)动力钻具331*33088.965.0790.493-1/2”REG正规型241.3mm（9-1/2”）钻头631*630210mm锻铣器4A11*4A10431*430203mm磨鞋431*430165mm钻铤4A11*4A10165mmMWD无磁短节411*410121mmMWD短节2A11*2A10444.5mm扶正器731*730310mm扶正器731*730214mm扶正器4A11*4A10158.8mm随钻震击器

5、411*4104A11*4A10203mm随钻震击器631*630常见组合：444.5mmBIT+SUB(730*730)228.6mmDC444mmSST+SUB(731*630)203.2mmDC311.1mmBIT+SUB(630*730)228.6mmDC241.3mmBIT+SUB(630*410)177.8mmDC210mm锻铣器430*4A10/4A11*410203mm磨鞋431*410311.1mmSST731*630203.2mmDC120.65mm动力钻具331*310(定向接头)