钻井液剪切稀释能力的表示及其与相关参数的关系  

Expressions on shearing dilution ability and its relations with interrelated parameters

作　　者：郭金爱[1] 徐艳萍[1] 

机构地区：[1]中原石油勘探局勘探开发科学研究院

出　　处：《钻井液与完井液》2000年第2期8-11,共4页Drilling Fluid & Completion Fluid

摘　　要：提出了从相同的流速梯度出发和从相同的表观粘度出发两种条件下钻井液剪切稀释能力的表示方法,并从相同的表观粘度出发论证了钻井液的剪切稀释性与动切力、塑性粘度、流速梯度及动塑比的关系。结论表明,钻进液的剪切稀释能力与动切力、塑性粘度和流速梯度都有一定的关系,而与动塑比不存在必然的关系,用动塑比评判钻井液的剪切稀释能力是没有根据的。This paper presents two expressions on the shearing dilution ability of drilling fluid, by means of identical velocity gradient and identical apparent viscosity. The relations between shearing dilution ability and interrelated parameters were illustrated. It concluded that certain relations exist between shearing dilution ability and such parameters as dynamic shearing, plastic viscosity and velocity gradient, while there is no necessary relation between it and the dynamic/plastic ratio.

关 键 词：钻井液 剪切降粘 石油钻井 稀释能力 相关参数 

分 类 号：TE254.1[石油与天然气工程—油气井工程]