天然气工业2001，Vol.21Issue(2)：48-51,4.
抗腐蚀低密度水泥体系的研究与应用
STUDY AND APPLICATION OF CORROSION－RESISTANT LOW-DENSITY CEMENT SYSTEM
摘要
Abstract
The mechanism of set cement corrosion is discussed by using phaseanalysis method in this paper． It is pointed out that the unconsolidated phase and diffusional effect as a result of the action of formation water solution matrix Ca（OH）2 with Ca（OH）2 are the basic reason causing the corrosion of the set cement and casing's exterior wall and a technical idea of using corrosion-resistant cement to from a protection ring to prevent casing's exterior wall corrosion is put forward． A new low-density cement system suited to sealing Luohe formation is developed and， by using it， the difficult problem of casing's exterior wall corrosion in Luohe aqueous layer in Changqing Oil Field is successfully solved， effectively prolonging the production phase of oil and gas wells．关键词
长庆油田/油气井/固井/低密度水泥/腐蚀分类
能源科技引用本文复制引用
杨远光,郭小阳,张玉隆,廖刚..抗腐蚀低密度水泥体系的研究与应用[J].天然气工业,2001,21(2):48-51,4.基金项目
本文是中国石油天然气集团公司. "八五"重点科技攻关项目的主要内容之一. （）
