基于井内实时水力学模型的环空压力计算及分析  

Calculation and Analysis on Annulus Pressure Based on the Real-time Borehole Hydraulic Model

作　　者：李亚刚 冯辉 王文深 刘艳杰[3] 赵光耀 刘伟 

机构地区：[1]河南省地质矿产勘查开发局第四地质矿产调查院,河南郑州450000 [2]河南豫矿地质勘查投资有限公司,河南郑州450000 [3]河南省地质调查院,河南郑州450000

出　　处：《探矿工程（岩土钻掘工程）》2017年第10期22-25,共4页Exploration Engineering:Rock & Soil Drilling and Tunneling

基　　金：河南省重大科技专项项目"河南页岩气勘查开发及示范应用研究"(编号:151100311000);国土资源部第二轮页岩气探矿权项目"河南中牟页岩气勘查"(编号:GT2012YQTKQCR0020)

摘　　要：实时水力学模型是现代钻井工程用于预测井下情况最重要的方法之一,通过分析实时水力学模型的影响因素,建立了一套井筒实时水力学计算与分析模型,包括井筒环空压力和当量循环密度(ECD)的计算。该模型充分考虑了钻柱旋转对速度分布的影响。同时,模型紧密结合参数随温度压力和工况的变化,使计算结果更加贴近井下实际情况,提高了该水力学模型计算结果的准确性,使之更具实用性。The real-time hydraulics model is one of the most important methods for modem drilling engineering to predict downhole conditions. This paper analyzes the influencing factors of real-time hydraulics model and a set of wellbore real-time hydraulic calculation and analysis model is established. The model takes into account the effect of drill string rotation on the velocity distribution. The model includes the wellbore annular pressure and equivalent circulating density. At the same time, by using the established hydraulic calculation and analysis model, the calculation results are more close to the actual underground situation according to the parameter changes along with the different temperatures and working condi- tions, which makes this model more practical.

关 键 词：实时水力学 环空流速 井筒压力 当量循环密度 

分 类 号：P634[天文地球—地质矿产勘探]