论文详情

增加套管壁厚是延长陇东油区套管使用寿命的重要方法

石油钻采工艺

2000年 22卷第1期

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Title

AN IMPORTANT METHOD FOR EXTENDING THE SERVICE LIFE OF CASING IN LONGDONG UNIT:INCREASE ITS THICKNESS

作者

胡文瑞刘海浪张风奎龚伟安

Authors

Hu Wenrui Liu Hailang Zhang Fengkui Gong Wei’an

单位

长庆石油勘探局, 陕西西安 710021

摘要

通过对长庆陇东油区马岭油田同一区块70年代完井的不同壁厚套管的腐蚀穿孔寿命的调查和分析,提出了套管腐蚀穿孔中的"基本壁厚"的概念,从理论上分析预测了厚壁套管的使用寿命,评价了3种延缓套管内腐蚀的方法,研究结果表明,在长庆陇东油区增加套管壁厚的投入产出比最大。增加套管壁厚的方法已在陇东油区部分调整井及更新井中得到了应用。这是在国内首次采用增加套管壁厚、延长使用寿命所进行的试验。

Abstract

Based on the investigation and analysis to the corrosive perforation period of casing with different wall thickness completed in 1970’s in the same block of Maling field of Longdong unit, Changqing Oilfield, this paper presents the conception of "basic wall thickness" used in the corrosive perforation of casing, theoretically analyzes and predicts the service life of thick casing, evaluates 3 methods for delaying the corrosion in the casing, and points out that the input output ratio is the highest if the wall of the casing is thickened in the Londong unit of Changqing Oilfield. The method of thickening the casing wall has been applied in some adjustment wells and renewed wells in Longdong unit. This is the test firstly conducted at home for extending the service life of the casing by thickening its wall.

关键词：

增加; 套管厚度; 防腐; 方法; 预测; 分析; 经济评价;

Keywords:

increase; casing thickness; corrosion; control; method; prediction; analysis;

基金项目

DOI

10.3969/j.issn.1000-7393.2000.01.013