KL植物胶钻井液特性及其减振机理

结合某地区的地质特征,对KL(苦苈)植物胶及其添加剂(NaOH与水解聚丙烯酰胺)进行室内试验,配制KL植物胶钻井液,并对KL植物胶钻井液的具备的流变性,粘弹性的变化规律进行探讨,最后对其减振机理进行论述。研究结果表明NaOH与水解聚丙烯酰胺(PHP)对KL植物胶流变特性有较大影响,主要表现在对其动切力及表观粘度的提升都有很好的促进作用；同时实验现象表明KL植物胶钻井液是粘弹性流体,添加剂NaOH与PHP可提高KL植物胶的粘弹性；KL植物胶钻井液的减振与其拥有良好的流变性与粘弹性关系密切,主要表现为粘弹减振,成膜效应与流变循环特性。

The Property of KL Floral Gel Drilling Fluid and its Reduction Mechanism

According to the geologic feature of somewhere, the purposes are to study the composition of KL floral gel drilling fluid and its changing rules of rheological property, viscoelasticity, and analyzed the vibration reduction mechanism, the author experimented with KL floral gel and its additives (NaOH and PHP). The result is that NaOH and PHP have a great influence on the rheological properties of KL floral gel, promoting its yield value and apparent viscosity. On basis of the experiment, KL gelatin drilling fluid is a kind of viscoelastic fluid and the additive, NaOH and PHP, can heighten the viscoelasticity of KL vegetable gelatin. In addition, its ability of vibration reduction has a strong connection to its good viscoelasticity and rheological property, whose expression is that viscoelasticity vibration attenuation, effect of film formation and the circle property of rheology.