注水泥顶替效率模型算法研究现状及展望  

Research status and prospects of cement displacement efficiency model algorithm

作　　者：刘地雄 温达洋 冯青豪 陈志鸣 LIU Dixiong;WEN Dayang;FENG Qinghao;CHEN Zhiming(China Oilfield Services Co.,Ltd.,Oilfield Chemistry Division,Zhanjiang Operations Company,Zhanjiang Guangdong 524000,China;China Oilfield Services Co.,Ltd.,Oilfield ChemistryDivision,Oil Chemical Research Institute,Langfang Hebei 065201,China)

机构地区：[1]中海油田服务股份有限公司油田化学事业部湛江作业公司,广东湛江524000 [2]中海油田服务股份有限公司油田化学事业部油化研究院,河北廊坊065201

出　　处：《石油化工应用》2025年第1期16-21,32,共7页Petrochemical Industry Application

摘　　要：顶替效率是评价固井质量重要参数之一,目前,业界开发出了许多顶替效率模型,开展了相关理论研究及案例分析。为了平衡计算时间与计算精度,这些模型使用了各种理论方法及假设条件,在使用这些模型时如果不明确这些假设条件差异、合理性及适用范围,会导致计算结果可能无效乃至错误,但是目前还没有相关研究针对现有模型算法进行分析。本文对目前所有的顶替效率模型进行了归类分析。分析表明,窄间隙情况下径向速度可以忽略以提高计算效率;偏心情况下忽略方位方向速度和压力梯度是不合理的;并且基于数字化转型趋势,未来顶替效率模型在保证精度的同时,需要更快的计算速度。具备较大潜力的是简化CFD模型、Narrow Gap Unwrapped模型和Lubrication模型。Displacement efficiency is one of the important parameters for evaluating cementing quality.Currently,the industry has developed many displacement efficiency models and conducted relevant theoretical research and case analysis.In order to balance calculation time and accuracy,these models use various theoretical methods and assumptions.If the differences,rationality,and applicability of these assumptions are not clear when using these models,the calculation results may be invalid or even incorrect.However,there is currently no relevant research analyzing existing model algorithms.This article categorizes and analyzes all current displacement efficiency models.Analysis shows that the radial velocity can be ignored in narrow gap situations to improve computational efficiency.It is unreasonable to ignore the directional velocity and pressure gradient in the case of eccentricity.And based on the trend of digital transformation,future displacement efficiency models require faster calculation speeds while ensuring accuracy.The simplified CFD model,Narrow Gap Unwrapped model,and Lubrication model have great potential.

关 键 词：固井 顶替效率 计算模型 数值模拟 

分 类 号：TE256.1[石油与天然气工程—油气井工程]