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1、鉆鋌、鉆桿上扣扭矩表鉆頭直徑與對(duì)應(yīng)鉆鋌尺寸推薦表鉆頭外徑mm鉆鋌外徑mm120.679.3~88.9142.9~152.4104.7~120.6158.7~171.4120.6~127.0190.5~200.0127.0~158.7212.7~222.2158.7~177.8241.3~250.8177.8~203.2269.9177.8~228.6311.1228.6~254.0374.6228.6~254.0444.5228.6~279.4508.0~660.4254.0~279.4現(xiàn)場(chǎng)鉆具推薦探傷周期表（注明：純鉆時(shí)間）名稱常規(guī)井探傷周期水平井、大位移斜井、探井
2、等復(fù)雜井探傷周期鉆桿新鉆桿2500±100h1500±100h一級(jí)鉆桿1500±100h900±100h二級(jí)鉆桿900±100h600±100h三級(jí)鉆桿600±100h400±100h鉆鋌、加重鉆桿、轉(zhuǎn)換接頭、穩(wěn)定器215mm以上井眼600±50h500±25h152mm及以下井眼400±50h300±25h方鉆桿1000±100h800±100h鉆鋌的尺寸規(guī)格鉆鋌螺紋尺寸外徑內(nèi)徑長(zhǎng)度臺(tái)肩倒角直徑參考彎曲強(qiáng)度比mminmmiInmmminNC23-31（試行）79.431/831.811/49.1576.232.57:1NC26-35（23/8IF）88.931/23
3、8.111/29.1582.9317/642.42:1NC31-41（27/8IF）104.841/850.829.15100.4361/642.43:1NC35-47120.743/450.829.15114.7433/642.58:1NC38-50（31/2IF）127.0557.221/49.15121.0449/642.38:1NC44-60152.4657.221/49.15或9.45144.5511/162.49:1NC44-60152.4671.4213/169.15或9.45144.5511/162.84:1NC44-62158.861/457.221
4、/49.15或9.45149.257/82.91:1NC46-62（4IF）158.861/471.4213/169.15或9.45150.0529/322.63:1NC46-65（4IF）165.161/257.221/49.15或9.45154.863/322.76:1NC46-65（4IF）165.161/271.4213/169.15或9.45154.863/323.05:1NC46-67（4IF）171.463/457.221/49.15或9.45159.569/323.18:1NC50-67（41/2IF）171.463/471.4213/169.15或9
5、.45159.569/323.37:1NC50-70（41/2IF）177.8757.221/49.15或9.45164.7631/642.54:1NC50-70（41/2IF）177.8771.4213/169.15或9.45164.7631/642.73:1NC50-72（41/2IF）184.271/471.4213/169.15或9.45169.5643/643.12:1NC56-77196.873/471.4213/169.15或9.45185.3719/642.70:1NC56-80203.2871.4213/169.15或9.45190.1731/643
6、.02:165/8REG209.681/471.4213/169.15或9.45195.7745/642.93:1NC61-90228.6971.4213/169.15或9.45212.783/83.17:175/8REG241.391/276.239.15或9.45223.8813/162.81:1NC70-97247.693/476.239.15或9.45232.695/322.57:1NC70-100254.01076.239.15或9.45237.3911/322.81:185/8REG279.41176.239.15或9.45266.7101/22.84:1
7、1.鉆鋌螺紋類型：NCXX-數(shù)字型，IF-內(nèi)平型，REG-正規(guī)型，括號(hào)內(nèi)螺紋類型可互換。2.彎曲強(qiáng)度比：內(nèi)螺紋危險(xiǎn)斷面抗彎截面模數(shù)與外螺紋危險(xiǎn)斷面抗彎截面模數(shù)之比。3.NC50-67（41/2IF）僅適用于C型鉆鋌（無磁鉆鋌）。鉆鋌尺寸參數(shù)及工作參數(shù)公稱尺寸88.9mm(31/2″)104.8mm(41/8″)120.6mm(43/4″)158.7mm(61/4″)165.1mm(61/2″)177.8mm(7″)203.2mm(8″)228.6mm(9″)279.4mm(11″)公稱內(nèi)徑38.150.8(57.15)50.871.471.471.4
