鉆具常用接頭尺寸

1、. 鉆具常用接頭尺寸常用接頭本體扣型公 接 頭母扣鏜孔直徑接頭類型大端直徑小頭直徑127mm（5”）鉆桿、178 mm（7”）鉆鋌411*410133.5114.3134.91NC50/數(shù)字型4-1/2”IF內(nèi)平型158mm(6-1/4”)鉆鋌4A11*4A10122.7103.73124.61NC46/數(shù)字型4”IF內(nèi)平型88.9mm(3-1/2”),120.65mm(4-3/4”)鉆鋌311*310102.0085.06103.583-1/2”IF內(nèi)平型73mm(2-7/8”)鉆鋌，104.78(4-1/8”)鉆鋌211*21086.1371.3187.712-7/8”IF內(nèi)平型方鉆桿公扣

2、521*520147.95126.79150.025-1/2”FH貫眼型刮刀鉆頭扣，公母錐扣421*420121.7296.31123.834-1/2”FH貫眼型914.4mm（36“）鉆頭，914.4mm擴大器731*730177.8144.47180.187-5/8”REG正規(guī)型660.4mm（26“）鉆頭，731*730177.8144.47180.187-5/8”REG正規(guī)型444.5mm(17-1/2”)鉆頭，228.6mm(9”)鉆鋌731*730177.8144.47180.187-5/8”REG正規(guī)型346.1mm（13-5/8“）鉆頭，210mm動力鉆具631*630152.

3、19131.03153.996-5/8”REG正規(guī)型311.15mm(12-1/4”)鉆頭，203.2mm(8”)鉆鋌631*630152.19131.03153.996-5/8”REG正規(guī)型196.85mm(7-3/4”)動力鉆具531*530140.21110.06171.45mm(6-3/4”)動力鉆具，215.9mm(8-1/2”)鉆頭431*430117.4790.47119.064-1/2”REG正規(guī)型152.4mm(6”)鉆頭，120.65mm(4-3/4”)動力鉆具331*33088.965.0790.493-1/2”REG正規(guī)型241.3mm（9-1/2”）鉆頭631*630

4、210mm鍛銑器4A11*4A10431*430203mm磨鞋431*430165mm鉆鋌4A11*4A10165mm MWD無磁短節(jié)411*410121mmMWD短節(jié)2A11*2A10444.5mm扶正器731*730310mm扶正器731*730214mm扶正器4A11*4A10158.8mm隨鉆震擊器411*4104A11*4A10203mm隨鉆震擊器631*630 常見組合：444.5mmBIT +SUB(730*730)228.6mmDC444mmSST+SUB(731*630)203.2mmDC311.1mmBIT +SUB(630*730)228.6mmDC241.3mmBIT+SUB(630*410)177.8mmDC210mm鍛銑器430*4A10/4A11*410203m