Temperature prediction model in multiphase flow considering phase transition in the drilling operations

作     者：Yang Zhang Yong-An Li Xiang-Wei Kong Hao Liu Teng-Fei Sun Yang Zhang;Yong-An Li;Xiang-Wei Kong;Hao Liu;Teng-Fei Sun

作者机构：College of Mechanical and Electrical EngineeringBeijing University of Chemical TechnologyBeijing 100027China School of Petroleum EngineeringYangtze UniversityWuhan430000HubeiChina 

出 版 物：《Petroleum Science》 (石油科学（英文版）)

年 卷 期：2024年第21卷第3期

页      面：1969-1979页

核心收录：

学科分类：0820[工学-石油与天然气工程] 082001[工学-油气井工程] 080701[工学-工程热物理] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0701[理学-数学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：support by the financial support of the National Nature Science Foundation of China(No.52274001,No.52074018) China Petrochemical Corporation(No.p21069) The financial support of Fundamental Research Funds for the Central Universities(buctrc202017) 

主　　题：Managed pressure drilling Phase transition Temperature Gas-drilling mud two phase 

摘      要：The study considers gas compression properties,gas slippage,back pressure(BP),phase transition(PT),well depth,and differences in gas-liquid physical properties.A new temperature model for multiphase flow is proposed by considering phase transition in the drilling *** mathematical model of multiphase flow is solved using the finite difference method with annulus mesh division for grid nodes,and a module for multiphase flow calculation and analysis is *** results indicate that the temperature varies along the annulus with the variation of gas influx at the bottom of the *** the process of controlled pressure drilling,as gas slips along the annulus to the wellhead,its volume continuously expands,leading to an increase in the gas content within the annulus,and consequently,an increase in the pressure drop caused by gas *** temperature increases with the increase in BP and decreases in gas influx rate and wellbore *** gas influx,the thermal conductivity coefficient for the gas-drilling mud two phases is significantly weakened,resulting in a considerable change in temperature along the *** the context of MPD,the method of slightly changing the temperature along the annulus by controlling the back pressure is feasible.