论文部分内容阅读
用７４００型高温高压流变仪对“八五”期间研制的华北任平１井低密度水包油乳化钻井液高温高压流变性进行了实验研究。系统地测试了温度、压力对该钻井液流变性的影响；运用宾汉模式、幂律模式、卡森模式和赫巴模式对该钻井液高温高压流变数据进行了系统拟合分析，得出赫巴模式是描述该钻井液高温高压流变性的最佳模式，就工程应用而言，二参数的卡森模式也可以用于描述水包油乳化钻井液高温高压流变性。并研究了赫巴流变方程中各参数随温度和压力的变化规律；还对该钻井液高温高压流变数据进行了回归分析，建立了预测低密度水包油乳化钻井液高温高压流变性能的模式。
High temperature and high pressure rheological properties of low density oil - in - water emulsion drilling fluids developed during the “Eighth Five Year Plan” period of Well Ren 1 in North China were studied by means of a 7400 high temperature and high pressure rheometer. The effects of temperature and pressure on the rheology of the drilling fluid were systematically tested. The Bingham model, power law model, Carson model and Herba model were used to systematically fit the rheological data of the drilling fluid. The Outbach model is the best model to describe the rheological properties of the drilling fluid under high temperature and pressure. For engineering purposes, the two-parameter Carson model can also be used to describe the rheological properties under high temperature and pressure of oil-in-water emulsion drilling fluid. And the variation law of the parameters of He Bab rheology with temperature and pressure was studied. The regression analysis of the rheological data of the drilling fluid at high temperature and pressure was also carried out. The predictions of high temperature and pressure rheology of lowdimensional oilwater emulsion drilling fluid Performance model.