稠油热采垂直井筒热量损失计算模型与应用  

A Heat Loss Calculation Model for Vertical Wellbore and Its Application in Heavy Oil Thermal Recovery Reservoirs

作　　者：高清春[1,2] 汪志明 叶西安[2] 罗欢 GAO Qing-chun;WANG Zhi-ming;YE Xi-an;LUO Huan(College of Petroleum Engineering,China University of Petroleum,Beijing 102249,China;Engineering Technology Research Institute,China National Petroleum Corporation Great Wall Drilling Engineering Co.,Ltd.,Panjin 124000,China)

机构地区：[1]中国石油大学(北京)石油工程学院,北京102249 [2]中国石油集团长城钻探工程有限公司工程技术研究院,盘锦124000

出　　处：《科学技术与工程》2021年第5期1770-1774,共5页Science Technology and Engineering

摘　　要：在稠油热采井注蒸汽阶段蒸汽干度和注蒸汽速度是影响其成功与否的主要因素,准确计算沿井筒的热量损失是评价注蒸汽效果的关键。从干度的定义出发结合两相垂直漂移流动模型,按井筒深度和注蒸汽时间分段,建立了稠油热采井垂直井筒热物性参数和热量损失速率模型。模型计算得出的热物性参数对比现场实测数据误差在5%以内;在同一井深注蒸汽时间的增加会导致热量损失速率降低,但对沿程热物性参数影响较小。Steam dryness and steam injection speed are main effective factors in steam injection stage of heavy oil thermal production well.Accurate cacculation on the heat loss along the wellbore is the key to evaluate the steam injection effect in a heavy oil thermal recovery well.Based on the definition of dryness and the two-phase vertical drift flow model,the thermophysical parameters and heat loss rate models of vertical wellbore were established according to wellbore depth and steam injection time.The error of thermophysical parameters calculated by the model was less than 5%compared with field data.The heat loss decreases with the increase of steam injection time at the same depth of the wellbore,whereas the thermophysical parameters are almost same.

关 键 词：稠油热采 干度 热量损失 注蒸汽效果 热物性参数 

分 类 号：TE319[石油与天然气工程—油气田开发工程]