吸水材料在石油钻井堵漏中的应用

Application of Water-Absorbent Materials in Petroleum Drilling Loss Control

吸水材料,特别是具有一定强度的凝胶吸水材料,在处理复杂地层漏失中发挥着越来越重要的作用。综述了堵漏用吸水材料的成分及其结构,从提高强度、提高抗温性能及控制膨胀速度等方面评述了当前堵漏用吸水材料的改进方法,并在实践的基础上阐述了吸水材料的堵漏机理,讨论了堵漏用吸水材料的发展趋势。

Water- absorbent materials, especially the polymeric hydrogels role in dealing complex drilling loss. The compositions and constructions , play a more and more important of the water - absorbent materials used for loss control were summarized. The modification techniques of current water - absorbent materials in enhancing strength, improving temperature resistance and controlling swelling rate were reviewed. The mechanism of loss control was introduced on the basis of practical applications. The developing trends of water - absorbent materials for loss control were discussed.