钻井全过程井筒-地层瞬态传热模型

doi:10.7623/syxb201202021

石油学报 ›› 2013, Vol. 34 ›› Issue (2): 366-371.DOI: 10.7623/syxb201202021

钻井全过程井筒-地层瞬态传热模型

杨　谋 1 　孟英峰 1　李　皋 1　邓建民 1　赵向阳 2

1. 西南石油大学油气藏地质及开发工程国家重点实验室四川成都 610500; 2. 中国石化石油工程技术研究院北京 100101

收稿日期:2012-09-10 修回日期:2012-12-05 出版日期:2013-03-25 发布日期:2013-01-31
通讯作者: 孟英峰，男，1957年8月生，2001年获西南石油学院博士学位，现为西南石油大学教授、博士生导师，主要从事石油与天然气工程学科的教学和科研工作。
作者简介:杨谋，男，1982年4月生，2012年获西南石油大学博士学位，现为西南石油大学讲师，主要从事钻井提速、井筒温度场及固井工艺方面的教学与科研工作。Email:ym528919@126.com
基金资助:
国家自然科学基金项目(No.51134004和No.51104124)、国家重点基础研究发展计划（973）项目(2010CB226704)和“西南石油大学青年科研创新团队”基金项目(2012XJZT003)资助。

A transient heat transfer model of wellbore and formation during the whole drilling process

YANG Mou 1 　MENG Yingfeng 1　 LI Gao 1　 DENG Jianmin 1　 ZHAO Xiangyang 2

Received:2012-09-10 Revised:2012-12-05 Online:2013-03-25 Published:2013-01-31

摘要/Abstract

摘要：

井筒-地层温度是影响井筒压力控制、井壁稳定性预测、井下动力钻具与测量设备优选的关键因素之一。基于钻井液循环和停止循环期间井筒-地层各单元控制组件能量交换机理，建立了实际钻具组合与井身结构条件下循环和停止循环期间井筒-地层传热耦合数值模型。结合1口深井基础数据，分析了循环与停止循环期间井下温度分布规律。研究表明：套管下深长度对井筒温度影响较大，在套管段随着循环和停止循环时间增加，环空温度几乎不变，而在裸眼段随着循环时间增加环空温度降低，随着停止循环时间增加环空温度逐渐升高;循环期间钻井液对地层温度的扰动距离为2.8m，而停止循环期间扰动距离为4.6m。

关键词: 井筒温度, 地层温度, 瞬态热传导模型, 循环时间, 停止循环时间

Abstract:

Wellbore-formation temperature is one of the key factors that affects the wellbore pressure control, the sidewall stability prediction, and the optimization of mud motor and measuring equipments. Based on the energy exchange mechanism of individual control-unit components of wellbore and formation during circulation and circulation-stop periods of drilling fluid, we established a coupling numerical model for wellbore-formation transient heat transfer during circulation and circulation-stop periods under conditions of the actual downhole string assembly and casing program. Combined with basic data of a deep well, we analyzed wellbore and formation temperature distributions during circulation and circulation-stop periods and the results showed that the wellbore temperature distribution is remarkably influenced by casing length and the annular temperature in the casing section hardly changes with increasing the circulation and circulation-stop time. However, the annular temperature in the open-hole section decreases with the increase of the circulation time, while it gradually increases with the increase of the circulation-stop time. The disturbance distance of drilling fluid to the formation temperature is commonly about 2.8m during the circulation process, while it is about 4.6m during the circulation-stop period.

Key words: wellbore temperature, formation temperature, transient heat transfer model, circulation time, circulation-stop time

杨　谋孟英峰李　皋邓建民赵向阳 . 钻井全过程井筒-地层瞬态传热模型[J]. 石油学报, 2013, 34(2): 366-371.

YANG Mou MENG Yingfeng LI Gao DENG Jianmin ZHAO Xiangyang . A transient heat transfer model of wellbore and formation during the whole drilling process[J]. Editorial office of ACTA PETROLEI SINICA, 2013, 34(2): 366-371.

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钻井全过程井筒-地层瞬态传热模型

A transient heat transfer model of wellbore and formation during the whole drilling process

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