摘要
旋转粘度计目前广泛用于对地质岩心钻探泥浆流变性能的测定,其对泥浆动切力τ_d进行测算的结果存在一定的误差。本文从3个方面分析研究误差产生的原因,包括测试过程中的机械摩擦阻力和流态变化的影响、计算公式建立方法不当的影响等。运用定量观测统计、定性理论探讨和严格数学推导等方法进行研究分析,可以看出,对动切力测算值以及传统的计算公式应予以必要的修正。
Rotary viscosimetor is.now widely used for measuring rheological data of the mud in geologic core drilling, there exist some errors in yield value obtained with a rotary viscosimetor. This paper deals with three factors in the analysis of errors: mechanical friction force and change of flow state occurring in measuring process, and an improper formula. Three techniques are employed for the analysis in the present paper: quantitative surveying statistics qualitative theoretical discussion and rigid mathematical derivation. It is concluded that some modifications should be made in terms of the measured yield value and traditional formula.
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
1993年第2期235-240,共6页
Earth Science-Journal of China University of Geosciences
关键词
粘度计
动切力
误差
测算值
泥浆
rotary viscosimetor, yield value,mechanical friction force,flow state, differential equation.
