国内钻井常用扣型参数.doc

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1、国内钻井常用扣型参数表1API钻杆接头的力学性能（所有规格）     最小屈服强度   最小拉伸强度        psi     N/mm2  psi           N/mm  最小伸长率百分比  母接头最小布氏硬度120.000    827.4   140.000        965.3           13                     285表2旋转台肩式连接产品尺寸123456789101112连接号或规格螺纹牙型每英寸牙数锥度在直径上测量点螺纹中径外螺纹大端大径外螺纹圆柱根部直径1/64外螺纹小端大径外螺纹锥部长度内螺纹最小长度内螺纹

2、锥部长度内螺纹扩锥孔大端直径数字（NC）型NC23V-0.038R422.355002.5632.4372.06333-1/83-5/82-5/8NC26V-0.038R422.668002.8762.7502.37633-1/83-5/82-15/16NC31V-0.038R423.183003.3913.2662.8083-1/23-5/84-1/83-29/64NC35V-0.038R423.351003.7393.6253.1143-3/43-7/84-3/83-13/16NC38V-0.038R423.808004.0163.8913.34944-1/84-5

3、/84-5/64NC40V-0.038R424.072004.2804.1563.5304-1/24-5/85-1/84-11/32NC44V-0.038R424.417004.6254.4993.8754-1/24-5/85-1/84-11/16NC46V-0.038R424.626004.8344.7094.0844-1/24-5/85-1/84-29/32NC50V-0.038R425.041705.2505.1354.5004-1/24-5/85-5/85-5/16NC56V-0.038R425.616005.8765.7034.62655-1/85-5/85-

4、15/16NC61V-0.038R426.178006.4386.2665.0635-1/25-5/86-1/86-1/2NC70V-0.038R427.053007.3137.1415.81366-1/86-5/87-3/8NC77V-0.038R427.741008.0007.8286.3766-1/26-5/87-1/88-1/16正规（REG）型2-3/8REGV-0.040532.365372.6252.5151.87533-1/83-5/82-11/162-7/8REGV-0.040532.740373.0002.8902.1253-1/23-5/84-1/

5、83-1/163-1/2REGV-0.040532.239873.5003.3902.5623-3/43-7/84-3/83-9/164-1/2REGV-0.040534.364874.6254.5153.5624-1/44-3/84-7/84-11/165-1/2REGV-0.050435.234025.5205.4104.3334-3/44-7/85-3/85-37/646-5/8REGV-0.050425.757805.9925.8825.15955-1/85-5/86-1/167-5/8REGV-0.050436.714537.0006.8905.6885-1/

6、45-3/85-7/87-3/328-5/8REGV-0.050437.666587.9527.8406.6085-3/85-1/268-3/64贯眼（FH）型5-1/2FHV-0.050425.591005.825---4.99255-1/85-5/85-29/326-4/5FHV-0.050426.519606.753---5.92055-1/85-5/86-27/32注:1.见图1,2.除另外规定,所有尺寸为英寸。3.仅对钻井钻头,公差为+0,-3/164.LBT是在内螺纹从旋紧台肩至非压力牙侧和完整螺纹深度最后一牙的牙顶交点测得的螺纹长度.图1表3旋转台肩式连接

7、产品螺纹尺寸12345678910螺纹牙型锥度螺纹牙型原始三角形高度牙型高度牙底削平高度srn=srs牙顶削平高度平顶宽度牙底圆角半径圆角半径牙顶牙底　In/ftHhn=hSfrn=frsfcn=fcsFcn=FCSFrn=Frsrrn=rrs±0.008V-0.038R20.0.0.0.0.065----0.0380.015V-0.038R30.0.0.0.0.065----0.0380.015V-0.04030.0.0.0.0.040---0.0200.015V-0.05030.0.0.0.0.050---0.0250.015V-0.