特殊螺纹接头油套管螺纹顶径验收公差的确定方法  

Method for Calculating Acceptance Tolerance of Crest Diameter for Premium Connection

作　　者：熊茂县 李新荣 尹红卫[1] 赫建锋 姬丙寅 史交齐 XIONG Maoxian;LI Xinrong;YIN Hongwei;HE Jianfeng;JI Bingyin;SHI Jiaoqi(PetroChina Tarim Oilfield Company,Korla,Xinjiang 841000,China;Xi′an Serv Stress Engineering Technology Service Co.Ltd.,Xi′an,Shaanxi 710075,China)

机构地区：[1]中国石油天然气股份有限公司塔里木油田分公司,新疆库尔勒841000 [2]西安三维应力工程技术有限公司,陕西西安710075

出　　处：《石油管材与仪器》2024年第2期93-96,100,共5页Petroleum Tubular Goods & Instruments

基　　金：中国石油股份有限公司重大科技专项“高温高压气井全生命周期井完整性关键技术攻关与试验”(编号:22161G33402001)。

摘　　要：特殊螺纹接头油套管油田验收公差的确定一直是油田和生产厂家争议的焦点。为解决特殊螺纹接头螺纹参数验收公差无科学计算方法的问题,根据尺寸链理论及统计学公差分析方法建立了一种特殊螺纹接头油套管螺纹顶径验收公差的确定方法,并以某扣型Φ88.90 mm×7.34 mm C110特殊螺纹油管为例,通过螺纹生产各阶段接箍螺纹顶径的统计分析,计算出该油管接箍螺纹顶径验收公差为±0.06 mm。研究成果为特殊螺纹接头油套管验收公差的确定提供了技术支持,对油田提高特殊螺纹接头油套管入库验收和质量控制水平具有指导意义。The determination of the acceptance tolerance of the premium connection tubing and casing has always been the focus of controversy between oilfield and manufacturer.In order to solve the problem that there is no scientific calculation method for the acceptance tolerance of the thread parameters of the premium connection,based on dimensional chain theory and statistical tolerance analysis method,a scientific method for determining crest diameter acceptance tolerance of the thread of the premium connection tubing and casing is established.Taking the C110 premium connection tubing with the size ofΦ88.90 mm×7.34 mm as an example,the acceptance tolerance of the crest diameter of the internal thread is calculated to be±0.06 mm,through the statistical analysis of the crest diameter in each stage of thread production.The research results provide technical support for the determination of acceptance tolerance of the premium connection tubing and casing,and have guiding significance for improving the level of acceptance inspection and quality control of the premium connection tubing and casing.

关 键 词：特殊螺纹接头 螺纹顶径 验收公差 设计公差 公差分析 

分 类 号：TG85[金属学及工艺—公差测量技术]