关于固井循环温度的一点探讨  

DISCUSSION ON CIRCULATING TEMPERATURE DURING CEMENTING

作　　者：王纯全[1] 刘世彬[1] 瞿云华[1] 温淼[1] 

机构地区：[1]中国石油天然气集团公司川庆钻探工程公司井下作业公司

出　　处：《天然气勘探与开发》2015年第3期70-72,76,共4页Natural Gas Exploration and Development

摘　　要：井下循环温度对固井作业非常重要。在前人的井下循环温度模型的基础上,探讨不同井型和环空间隙大小对固井循环温度影响。固井循环温度系数均随水平井或大斜度井的井深增加和环空间隙减小而增加。建议在水平井固井循环温度系数取值考虑水平井段增加和环空间隙减小而适当增加,为现场固井循环温度的取值提供参考。Downhole circulating temperature plays a very important role in well cementing.Based on the existing model of downhole circulating temperature, the effects of various well types and annular clearances on the circulating temperature are discussed. In many horizontal and high-angle wells, temperature coefficient during cementing may increase with an increase of depth and a decrease of annular clearance. So, we suggest that, with the increase of horizontal sections and decrease of annular clearance considered, this coefficient value needs to be increased appropriately. It provides a reference for selecting the circulating temperature during in-situ cementing.

关 键 词：循环温度 固井 井型 环空间隙 温度系数 

分 类 号：TE256[石油与天然气工程—油气井工程]