常用扣型总结

1、常用扣型总结EUE（external upset end）非加厚端一 常见油管扣型（tubing joint）EUP（external upset pin）外加厚公扣EU（external upset）外加厚EUB（external upset box）外加厚母扣NU（Uon-upset）无外加厚常见油管扣型IU（internal upset）内加厚New VAWIEU（inter-external upset）内外加厚表1-1 常用油管扣型区别常用油管扣型区别扣型有无加厚特征EU有外加厚8扣/英寸NU无外加厚10扣/英寸New VAW无内外加厚扣截面为矩形，螺距间隔相等，锥度不大二 常见钻杆

2、接头扣型（tool joint connection）REG（regular）正规扣IF（internal flush）内平扣FH（full hole）贯眼扣常见钻杆接头扣型NC（number connection）数字接头注：在现场大于4-1/2”一般是REG,而小于4-1/2”一般IF运用较多公扣表示法：1.external thread 2.male 3.male thread 母扣表示法：1.female thread 2.internal thread 3.box 4.box thread表2-2 常用扣型的区别三种常用扣型的区别扣型扣/寸与钻杆内径关系适用对象REG2-3/8”4-

3、1/2”:55-1/2”8-5/8”:4接头内径钻杆加厚处内径钻杆管体本身内加厚钻杆IF4扣/in接头内径=钻杆加厚处内径=钻杆管体本身外加厚或内外加厚FH接头内径=钻杆加厚处内径钻杆管体本身内外加厚图2-1 三种扣型简图表2-1 钻杆接头尺寸表钻杆接头尺寸表扣型表示方法公扣小母扣端部端外径（mm）台肩内径（mm)正规API习惯2-3/8REG2A31*2A3045.165.12-7/8REG231*23054.278.63-1/2REG331*33064.8991.34-1/2REG431*43090.46119.95-1/2REG531*530110.2142.86-5/8REG631*6

4、30130.02154.77-5/8REG730*731144.5180.28-5/8REG830*831131.04154贯眼2-7/8FH221*22070.0894.53-1/2FH321*32077.44103.94FH(NC40)4A21*4A204-1/2FH421*42096.21124.115-1/2FH521*520126.78150.56-5/8FH621*620150.37174.1内平NCAPI习惯NC262-3/8IF2A11*2A1060.3574.45NC312-7/8IF211*21071.4488N383-1/2IF311*31084.98103.19NC464IF4A11*4A10105122NC504-1/2IF411*410114.3134.945-1/2IF511*510141.29164.36-5/8IF611*610168.28190.6三 盲管筛管常用扣型LTC（Long thread connector）长螺纹连接STC（Short thread c