长庆油田X区块套损井腐蚀规律研究及措施改造  

Corrosion Law of Damaged Wells in Block X of Changqing Oilfield and Measures for Improvement

作　　者：何秀玲 卓红 HE Xiuling;ZHUO Hong(Changqing Branch of CNPC Logging Co.,Ltd.,Xi′an 710201,China)

机构地区：[1]中国石油集团测井有限公司长庆分公司,西安710201

出　　处：《重庆科技大学学报（自然科学版）》2024年第5期28-35,共8页Journal of Chongqing University of Science and Technology(Natural Sciences Edition)

基　　金：中国石油集团测井有限公司科技项目“老油田挖潜稳产测井综合评价技术研究”(CNLC2022-08B04)。

摘　　要：长庆油田X区块具有低孔、低渗、低压、低产等特征,地层水矿化度高,富含腐蚀性离子。随着油井开采时间的延长,因腐蚀而导致的油水井套损井数量逐年增加,严重影响了X区块的注采平衡,制约了其长期稳产。为进一步认识X区块套损井腐蚀规律,对研究区套损井资料数据进行了统计,从地质层位、生产因素、井身因素和腐蚀因素等方面对套管损伤原因进行了详细分析。根据套管腐蚀特征及开发情况,针对可恢复生产的潜力井制定了合理的改造方案。The block X of Changqing Oilfield has the characteristics of low porosity,low permeability,low pressure,and low production.The formation water has high mineralization and is rich in corrosive ions.With the extension of oil well production time,the number of oil and water well casing damage caused by corrosion has increased year by year,seriously affecting the injection production balance in block X and severely restricting the long-term stable production.In order to further know the corrosion law of damaged wells in block X,a statistical analysis of damage wells date is conducted and the cause of casing damage from geological layers,production factors,wellbore factors and corrosion factors is analysized in detail in the research area.Based on the corrosion characteristics and development status,a reasonable Improvement plan has been developed for potential wells that can restore production.

关 键 词：套管损伤 腐蚀规律 措施改造 二次固井 

分 类 号：TE98[石油与天然气工程—石油机械设备]