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1储气井固井1.1固井的作用储气井最大的特点是绝大部分都埋于地下,而地层是一种多孔腐蚀性介质,其中富含水、氧及多种电解质,会对储气井造成腐蚀损伤,从而危及储气井的安全。由于储气井制造时未对地层腐蚀进行有效的预防,已经有过惨痛的教训。如2005年四川宜宾某加气站内的一口储气井由于井筒腐蚀开裂,导致近100m的井筒窜出地面飞至空中,落下后砸坏了附近的房屋、
1 Gas well cementing The role of cementing The biggest feature of gas storage wells are buried in the ground, and the formation is a porous corrosive medium, which is rich in water, oxygen and a variety of electrolytes, gas wells will cause Corrosion damage, thus endangering the safety of gas wells. There have been painful lessons from the fact that there is no effective prevention of formation erosion during gas well production. For example, a gas well in a gas filling station in Yibin, Sichuan Province in 2005 caused the wellbore to corrode and crack. As a result, nearly 100m of wellbores flew out of the ground and flew into the air, smashed nearby houses after falling,