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塔河油田完井可溶裸眼封隔器的腐蚀溶解过程分析

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  • 1中石化石油工程技术研究院有限公司; 2中国石化西北油田分公司; 3重庆科技学院冶金与材料工程学院
刘 阳(1985-),副研究员,主要从事套管、裸眼封隔器类完井工具与材料的研究,电话:010-56606092,E - mail:liuyang.sripe@sinopec.com

收稿日期: 2022-05-30

  修回日期: 2022-06-21

  录用日期: 2022-07-12

  网络出版日期: 2023-12-26

基金资助

中国石化科技部攻关项目“顺北一区完井技术研究与应用” (P18022 - 1)资助

Analysis on Corrosion Dissolution Process of Dissoluble Open - Hole Packers in Tahe Oilfield Well Completion

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  • (1. Sinopec Research Institute of Petroleum Engineering Co., Ltd., Beijing 102206, China;2. Sinopec Northwest Oilfield Company, Urumqi 830011, China;3. School of Metallurgy and Materials Engineering, Chongqing University of Science & Technology,Chongqing 401331, China)

Received date: 2022-05-30

  Revised date: 2022-06-21

  Accepted date: 2022-07-12

  Online published: 2023-12-26

摘要

分析了经过化学镀镍+环氧树脂封闭的7000系铝合金可溶裸眼封隔器在塔河油田完井作业中的腐蚀溶解行为及影响因素,对首次应用的可溶封隔器残片进行了测试和分析。结果表明:完井管柱配置、下入过程中的磨损、井内介质以及高温高压环境是促使其快速腐蚀溶解的主要因素,化学镀镍层对本体有一定的保护作用,但也带来了电偶腐蚀。对7A04铝合金本体以及镀镍铝合金挂片进行了模拟现场工况的测试,得出不同介质中的腐蚀速率,为铝合金本体的服役寿命的预估和镀层厚度的优选提供了依据。

本文引用格式

刘阳, 李冬梅, 李林涛, 兰伟 . 塔河油田完井可溶裸眼封隔器的腐蚀溶解过程分析[J]. 材料保护, 2022 , 55(11) : 192 -202 . DOI: 10.16577/j.issn.1001-1560.2022.0329

Abstract

The corrosion dissolution behaviour and influencing factors of 7000 series aluminum alloy dissoluble open - hole packers treated by electroless nickel plating and epoxy resin sealing in Tahe oilfield completion operation were analysed, and the fragments of dissoluble packers used for the first time was tested and analysed. Results showed that the well completion string configuration, wear during running in, medium in the well and high temperature and high pressure environment were the main factors prompting the rapid corrosion dissolution. Electroless nickel plating coating had certain protective effect on body, however,it brought the galvanic corrosion as well. Besides, the 7A04 aluminum alloy body and nickel plated aluminum alloy coupon were tested under simulated field conditions, and the corrosion rates in different media were obtained, which provided a basis for the prediction of the service life of aluminum alloy body and the optimization of coating thickness.



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