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触变水泥是一种适用于油气井固井挤水泥、防止气窜和堵漏作业的特种水泥体系,对解决我国油气井固井作业中普遍存在的水泥浆上返和环空气窜等问题有较好的应用前景。文章在调研国外大量资料的前提下,对触变水泥的设计原理、化学配方、评价方法及现场应用情况做了系统的评述。还指出了我国发展触变水泥的研究方向:研制适合国产水泥的触变剂和探索一套切实可行的评价触变性的方法。
Thixotropic cement is a kind of special cement system which is suitable for cementing and cementing wells in oil and gas wells to prevent gas channeling and plugging operations. To solve the problems of cement slurry return and annulus channeling which are ubiquitous in well cementing operation of oil and gas wells in China, Better application prospects. Based on the investigation of a large number of foreign materials, the article systematically reviews the design principles, chemical formulations, evaluation methods and field applications of thixotropic cement. Also pointed out that the development of thixotropic cement research in China: thixotropic agent for the development of domestic-made cement and to explore a set of practical methods to evaluate thixotropy.