摘要
利用紊动扩散的流体力学理论,分析研究了圆管轴向的紊动扩散规律,得出了轴向扩散的数学模型。并将此数学模型应用到注、替水泥浆过程中,推导出了隔离液在套管及不同偏心度下环空的掺混段长度的计算公式,从而计算出被污染隔离液的总体积,以此确定隔离液的最小用量,并给出了计算实例。
A numeric model of axial diffusion is established based on the analysis of the axial diffusion of turbulent pipe flow. Using this model in the calculation of injection and displacement of cement slurry,the length of the mixed spacer and cement slurry in casing string and annulus of different eccentricity is calculated,and hence the total volume of the contaminated spacer. From this calculation the minimum volume of spacer required can be established.
出处
《钻井液与完井液》
CAS
2010年第2期40-42,共3页
Drilling Fluid & Completion Fluid
关键词
隔离液
数学模型
紊流
固井质量
Spacer
Numerical model
turbulent flow
Cementing job quality
