静液柱压力预测方法研究

A Study of Hydrostatic Pressure Forecasting Method.

理论分析表明 ,静液柱压力与流体的地面密度、流体的组成及温度压力变化的幅度有关。通过对塔里木盆地测试时的实际资料进行数理统计分析 ,建立了 4种静液柱压力预测模型 ,分别得到了密度比法、非线性压力法、密度法和线性压力法预测压力的回归方程 ,其预测结果的精度高于直接计算结果。与传统的方法相比 ,该预测方法具有科学性、动态性。文中还进行了压井液密度差的分析 。

The theoretical analysis illustrates that hydrostatic pressure has something to do with surface density of fluid,fluid compositionand range of pressure and temperature variatios.Through mathematical statistics and analysis to the actual test data of Tarim Basin,four hydrostatic pressure forecasting models are created to generate regression equations for forecasting pressure using density ratio approach,nonlinear pressure approach,density approach adn linear pressure approach respectively,the accuracy of forecasing results is better than that of direct calculating results.Compared to conventional method,thes forecasting method is more scientific and dynamic.This paper also analyzes the density differenceof killing fluids and gives out the distrbution law of density difference of killing fluids.