井筒中温度场测井响应特征模拟

掌握井下温度分布,对于动态监测注入井或生产井有着重要意义。针对垂直注入井或生产井井筒及周围地层,在合理假设井筒中流体流速变化的基础上,根据连续介质和多孔介质传热,建立了柱坐标下二维油水两相流的温度场数学模型,并应用全隐式格式的有限差分法进行离散与求解。通过编程模拟计算了不同注采参数(如注采速度、注入温度、注采时间等)及地层厚度的井筒温度场分布,模拟结果符合一般认识,该研究为监测油田的注采动态提供了理论基础。

Simulation of the Characteristics of Logging Response in Temperature Field in Wellbore

Being informed of deep well temperature distribution is very important in dynamic monitoring of water injection well or production well. According to the heat transfer theory of continuous medium and porous medium, the 2D oil--water temperature field mathemati- cal model of two phase flows in cylindrical coordinates have been set up for the vertical wellbore of water injection well or production, based on the reasonable hypothesis of well- bore fluid rate changes. Discrete and solving of full implicit form of finite difference method can be used. Furthermore, through numerical simulation of wellbore temperature distribu- tion, different injection--production conditions （such as injection--production rate, injec- tion temperature, injection--production time） and oil layer thickness are carried out. Andthe simulation result of temperature distribution corresponds to general knowledge, which is the theoretical basis for further observing injection--production performance of oil field.