中国石油网消息：截至7月6日，经过多周期现场跟踪与多批次检测对比，吉林油田防腐新工艺试验井井下管材腐蚀速率下降66.2%至89.7%，标志着该项新工艺已突破高含硫碳驱油气井管材腐蚀失效的关键瓶颈。

China Oil News: As of July 6th, after multiple rounds of on-site tracking and multiple batches of detection comparisons, the corrosion rate of the downhole tubing in the new anti-corrosion technology test wells of Jilin Oilfield has decreased by 66.2% to 89.7%, marking that this new technology has overcome the key bottleneck of tubing corrosion failure in high-sulfur carbon dioxide drainage oil and gas wells.

在二氧化碳驱规模化开发进程中，井下二氧化碳、硫化氢共存所造成的管材复合腐蚀及安全风险，长期制约着油井的生产。面对行业痛点，今年1月，吉林油田油气工艺研究院组建腐蚀防护科研团队，结合现场实际需求，反复论证、集中攻关，最终形成“专用缓蚀药剂+连续稳定加药”一体化防腐解决方案。

During the large-scale development of carbon dioxide injection, the combined corrosion of tubing caused by the coexistence of carbon dioxide and hydrogen sulfide in the well has long hindered the production of oil wells. In response to the industry's pain points, in January this year, the Oil and Gas Process Research Institute of Jilin Oilfield established a corrosion prevention research team. Based on the actual needs on site, they conducted repeated research and concentrated efforts on solving the problem. Eventually, they developed an integrated anti-corrosion solution of "special corrosion inhibitor + continuous and stable dosing".

科研团队针对高温、高压、高腐蚀介质并存的极端井下环境，开展了多轮严苛的模拟实验。经复合腐蚀工况考验，管材全程无裂纹，核心防腐性能完全满足现场使用要求。针对传统间歇式加药易造成井下药剂浓度波动、防腐效果不稳定等短板，团队对加药工艺进行迭代优化，创新应用连续加药工艺，保障了井下缓蚀药剂浓度长效稳定。

The research team conducted multiple rounds of rigorous simulation experiments in extreme underground environments where high temperatures, high pressures, and corrosive media coexist. After being tested under complex corrosion conditions, the pipe material showed no cracks throughout the process, and the core anti-corrosion performance fully met the requirements for on-site use. In response to the shortcomings of traditional intermittent drug addition, which could cause fluctuations in the underground drug concentration and unstable anti-corrosion effects, the team iteratively optimized the drug addition process and innovatively applied the continuous drug addition method, ensuring the long-term stability of the underground corrosion inhibitor concentration.

今年4月，新工艺进入现场试验阶段。团队筛选出水驱井、气驱井各2口作为试验井，同步实施长期现场加药跟踪监测，并配套开展室内腐蚀对照评价，持续校验整套防腐方案的现场适配能力。试验结果显示，新工艺成效突出，已具备推广应用条件。

In April this year, the new process entered the field trial stage. The team selected 2 water-driven wells and 2 gas-driven wells as the test wells. Simultaneously, long-term on-site drug addition tracking monitoring was carried out, and indoor corrosion comparison eva luations were also conducted to support the continuous verification of the on-site applicability of the entire anti-corrosion scheme. The test results showed that the new process achieved remarkable results and has reached the conditions for promotion and application.