Thermal stress and expansion of wellbore are analyzed through ANYSIS finite element analysis in accordance with the problems of steam channeling,sand production and broken and bailed cement sheath.

• 针对蒸汽吞吐时发生汽窜、地层出砂及水泥环破裂掏空的情况,利用ANYSIS有限元分析的数值模拟,对井筒热应力和热膨胀进行了分析。