论文详情

井下钻具受交变应力影响分析

石油钻采工艺

2007年 29卷第6期

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Title

Influence analysis of down-hole equipment over alternate stress

作者

顾纯巍杜威王巍闵锐孟文波

Authors

GU Chun-Wei DU Wei WANG Wei MIN Rui MENG Wen-bo

单位

中国海洋石油基地集团监督监理技术公司, 广东湛江 524057

Organization

China Ocean Petroleum Base Site

摘要

开发井作业中,钻具入井使用频繁,同时受井眼轨迹及水力参数的影响,钻具强度面临严峻的考验。为了满足钻进的需要,钻具在井下工作时除了承受轴向应力,也承受径向应力及扭力等多种应力,从而降低了钻具的使用寿命,大幅度地加剧了钻具的损坏,因此有必要对钻具承受的交变应力进行分析,以便更好地指导现场作业。

Abstract

Down hole equipment was employed frequently and influenced by well course and hydraulics.So its intensity was severe challenged.In order to meet the need of drilling,the equipment has be stand axial stress,radial stress,twisting force and so on.This will reduce the life span of down-hole equipment and intensify its damage greatly.Therefore,it is necessary to analyze the alternate stress for directing field practice better.

关键词：

应力; 螺旋屈曲; 正弦屈曲; 应力集中; 疲劳失效;

Keywords:

stress; spiral buckle; sinuous buckle; stress concentration; fatigue failure;

基金项目

DOI

10.3969/j.issn.1000-7393.2007.06.035