在石油钻井工程中,深部地层盐岩钻井一直以来都是重大的技术难题之一,由于盐岩性能较为特殊,因此当工人钻开井眼后,盐岩便很容易发生蠕变,导致井眼失稳、卡钻等现象,甚至是固井后挤毁套管等重大事故,为石油钻井工程带来了巨大经济损失。因此,对深层盐岩合理蠕变本构关系进行合理确定,才能够为研究深部地层盐岩钻井问题奠定下良好的基础。本文通过使用变量理论,来对盐岩蠕变特性进行描述,并对深层盐岩蠕变本构关系进行分析。 Drilling of salt rock in deep formations has always been one of the major technical challenges in petroleum drilling engineering. Due to the relatively special properties of rock salt, salt rock is prone to creep after the worker drills the wellbore, Instability, sticking and other phenomena, even after the cementing casing collapse and other major accidents, oil drilling project has brought tremendous economic losses. Therefore, to reasonably determine the reasonable creep constitutive relationship of deep salt rock can we lay a good foundation for the research of deep rock salt rock drilling. In this paper, variable theory is used to describe the creep characteristics of salt rock, and the creep constitutive relation of salt rock in deep is analyzed.