Modeling and simulation of non-isothermal three-phase flow for accurate prediction in underbalanced drilling  

作　　者：FALAVAND-JOZAEI A HAJIDAVALLOO E SHEKARI Y GHOBADPOURI S 

机构地区：[1]Department of Mechanical Engineering,Ahvaz Branch,Islamic Azad University,Ahvaz 6134937333,Iran [2]Department of Mechanical Engineering,Shahid Chamran University of Ahvaz,Ahvaz 6135783151,Iran [3]Drilling Research Center,Shahid Chamran University of Ahvaz,Ahvaz 6135783151,Iran [4]Department of Mechanical Engineering,Yasouj University,Yasouj 7591874934,Iran

出　　处：《Petroleum Exploration and Development》2022年第2期406-414,共9页石油勘探与开发（英文版）

摘　　要：The present study aims at investigating the effect of temperature variation due to heat transfer between the formation and drilling fluids considering influx from the reservoir in the underbalanced drilling condition. Gas-liquid-solid three-phase flow model considering transient thermal interaction with the formation was applied to simulate wellbore fluid to calculate the wellbore temperature and pressure and analyze the influence of different parameters on fluid pressure and temperature distribution in annulus. The results show that the non-isothermal three-phase flow model with thermal consideration gives more accurate prediction of bottom-hole pressure(BHP) compared to other models considering geothermal temperature. Viscous dissipation, the heat produced by friction between the rotating drilling-string and well wall and drill bit drilling, and influx of oil and gas from reservoir have significant impact on the distribution of fluid temperature in the wellbore, which in turn affects the BHP. Bottom-hole fluid temperature decreases with increasing liquid flow rate, circulation time, and specific heat of liquid and gas but it increases with increasing in gas flow rate. It was found that BHP is strongly depended on the gas and liquid flow rates but it has weak dependence on the circulation time and specific heat of liquid and gas. BHP increase with increasing liquid flow rate and decreases with increasing gas flow rate.

关 键 词：under-balanced drilling bottom-hole pressure fluid temperature CUTTINGS three-phase flow model temperature profile wellbore heat transfer 

分 类 号：TE319[石油与天然气工程—油气田开发工程]