钻井液与完井液2023，Vol.40Issue(6)：787-792,6.DOI:10.12358/j.issn.1001-5620.2023.06.013
热物性参数对水泥浆循环温度的影响规律
Effects of Thermal Physical Parameters on Circulation Temperature of Cement Slurries
摘要
Abstract
In well cementing operation,to ensure that the cement slurry is safely pumped int the hole,the cement slurry shall have an appropriate thickening time.The circulating temperature of the cement slurry is one of the important factors affecting the thickening time of the cement slurry.The methods for calculating the circulating temperature of a cement slurry in the API Recommended Practice do not satisfy the need for calculating the circulating temperature in different areas and different borehole conditions.Thus,an unsteady state flow heat transfer model is established.By measuring the thermal physical parameters,the coefficients of heat conductivity and specific heat capacities of the drilling fluid,the casing strings,the rocks and the cement slurry are determined,and the temperature field of the cement slurry during injection and displacement is thus simulated.The simulation results show that increasing the coefficients of heat conductivity of the cement slurry and the spacer fluid reduces the circulating temperature of the cement slurry.Decreasing the coefficients of heat conductivity of the casing string and the rocks,the circulating temperature of the cement slurry changes in less than 1℃ .Data acquired from the Zhejiang Oilfield and the Tarim Oilfield show that the difference between the measured well cementing temperatures and the simulated well cementing temperatures is less than 5℃ ,indicating that the simulated data is accurate and has good consistency with the measured data.Studies on the factors affecting the circulating temperatures of a cement slurry during injection and displacement in well cementing operations provide theoretical supports to the design of the properties of the cement slurry,thereby ensuring the efficient and safe well cementing operations.关键词
固井/温度场/非稳态流动传热模型/热物性参数Key words
Well cementing/Temperature field/Unsteady state flow heat transfer model/Thermal physical parameter分类
能源科技引用本文复制引用
郑睿,郭玉超,张春晖,张华,王贵富..热物性参数对水泥浆循环温度的影响规律[J].钻井液与完井液,2023,40(6):787-792,6.基金项目
中国石油天然气集团有限公司工程技术领域智能化数字化转型技术研究项目"钻完井及井下作业智能优化系统研发"(2021DJ7401). （2021DJ7401）
