井壁附近瞬态温度的数值计算方法  

The Solution of Wellface's Temperature through Finite Difference Method

作　　者：吴建忠[1] 石晓兵[1] 李莎莎[1] 甘一风[1] 易建国[2] 

机构地区：[1]西南石油大学石油工程学院,四川成都610500 [2]西南油气田川东北气矿,四川达州市636100

出　　处：《内蒙古石油化工》2006年第12期160-162,共3页Inner Mongolia Petrochemical Industry

基　　金：西南石油大学石工院新939项目资助

摘　　要：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 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 nelghborhood, 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.

关 键 词：温度分布 井温 地层温度 井眼稳定 数学模型 有限差分法 

分 类 号：TE21[石油与天然气工程—油气井工程]