泡沫水泥固井是欠平衡钻井配套应用的主要技术之一 ,可以防止因固井对产层带来的污染 ,避免压漏地层 ;与常规水泥相比 ,泡沫水泥浆形成的水泥环具有一定的塑性 ,因而能够防止后期射孔造成的水泥环破坏。在气井钻井中 ,常常采用这一技术 ,但在需要保护产层和易漏地层 ,泡沫水泥技术也正在得到更为广泛的应用。本文通过美国怀俄明州 6口天然气深井使用泡沫水泥和普通水泥的实例对比 ,较好地说明了泡沫水泥的优点和潜在的成本节约 Cementing with foam cement is one of the main technologies for underbalanced drilling, which can prevent the formation of pressure-leakage strata due to the cementing on the formation and prevent the pressure-leaking formation. Compared with the conventional cement, the cement ring formed by the foam cement has certain Plasticity, which can prevent post-perforation caused by the destruction of the cement ring. This technique is often used in gas well drilling, but foam cement technology is also gaining more widespread use in areas where protective and easing formations are required. This article compares the advantages and potential cost savings of foam cement with the example comparison of the use of foam cements and conventional cements in six natural gas deep wells in Wyoming, USA