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黄验1井是一口CO2产气井,1985年投产至今,限于当时的技术条件并未对CO2腐蚀问题给予重视,因此造成现在表套泄露CO2气的重大安全隐患,直接威胁CO2气田的安全生产。2009-2010年华东分公司采油厂通过大修等一系列工艺技术手段打捞出落井油管,并在原51/2〞腐蚀套管内下31/2〞13Cr油管,二次固井,最终恢复了该井的安全生产,消除了CO2气泄露的安全隐患,取得了显著的社会效益和经济效益。
Well Huang 1 is a CO2 gas well. Since it was put into operation in 1985, the technical conditions at that time did not pay much attention to the issue of CO2 corrosion. As a result, it is a major safety hazard that the CO2 gas leaks from the case and threatens the safety of CO2 gas field directly. In 2009-2010, the East China Branch Oil Production Plant salvaged the downhole tubing through a series of technological means such as overhaul. The 31/2 “13Cr tubing under the original 51/2” corrosion sleeve was re-cemented and the well was finally recovered Safe production eliminates the potential safety hazard of CO2 gas leakage and has achieved significant social and economic benefits.