井壁附近瞬态温度的数值计算方法

在石油钻井开采等过程中研究热量在地层中的传播具有很重要的意义。特别是在进行井漏机理研究中,利用它可以分析温度对井眼破裂压力、裂缝重启压力以及裂缝延伸压力的影响。本文使用有限差分法近似地求得近井壁地层的温度分布。利用此方法,可以求得任意时刻井壁温度随井深的分布,任意时刻、任意井深处井壁温度的径向分布,任意点温度随时间的变化,从而进一步了解温度在石油工程上的影响。

The Solution of Wellface's Temperature through Finite Difference Method

The research about heat's propagation in stratum in the course of drilling,oil recovery and so on is very important to the oil production.The influence of temperature to wellbore fracturing pressure,fracture re-open pressure and fracture extension pressure can be used in the study of lost circulation's mechanism.By applying the finite difference method,we can approximatively achieve the temperature distribution in the wellbore's neighborhood,in the same time,we also achieve the wellbore temperature's distribution along well depth anytime and the wellbore temperature's radial distribution anytime,anywhere,and studies the temperature change anytime,anywhere.The study will be helpful to the concrete construction work.