焊管2024，Vol.47Issue(7)：50-55,6.DOI:10.19291/j.cnki.1001-3938.2024.07.008
侏罗系油井套管破损原因分析及采油工艺防腐措施优化
Analysis of Casing Damage in Jurassic Oil Wells and Anticorrosion Measures for Optimization Oil Production Technology
摘要
Abstract
Based on the investigation and analysis of the typicalcasing damage rules and causes of Jurassic oil wellwhich the casing damagewas serious,the feasibility of anticorrosion measures for optimizing oil production technology using deepened screen wasstudied through laboratory tests and on-site corrosion monitoring.The results show that thetypical casing damage locationsare all below the dynamic liquid level whichis mainly concentrated in the pipe section below 1 000 m.The main casing damage feature is internal corrosion and perforation,and the average temperature of casing damage section is about 60℃.The high water content and CO2 content are the main reasons for casing corrosion.The measures for optimizing oil production technology using deepened screen can move down the position of oil-water interface within casing-tubing annulus,thus avoiding the sensitive temperature range of CO2 corrosion.The anticorrosion measures can alleviatecasing corrosion of Jurassic oil wells to a certain extent,but it needs to be used with other protection technologiestogether.The direction offurther optimization of anticorrosion measures for oil production technology is also pointed out.关键词
侏罗系油井/套管破损/采油工艺/防腐措施Key words
Jurassic oil wells/casing damage/oil production technology/anticorrosion measures分类
矿业与冶金引用本文复制引用
吕祥鸿,王晨辉,谢登峰,赵凯峰,徐建国,张鑫鑫,王晨..侏罗系油井套管破损原因分析及采油工艺防腐措施优化[J].焊管,2024,47(7):50-55,6.基金项目
国家自然科学基金青年科学基金项目"W/B4C纳米多层涂层的界面结构和强韧化机理研究"(项目编号51902254) （项目编号51902254）
陕西省自然科学基础研究计划"Al掺杂FeMn/TiN纳米涂层的相变行为和强韧化机理研究"(项目编号2018JQ5108). （项目编号2018JQ5108）
