四参数流变模式及其水力计算模型

doi:10.7623/syxb201003030

石油学报 ›› 2010, Vol. 31 ›› Issue (3): 511-515.DOI: 10.7623/syxb201003030

四参数流变模式及其水力计算模型

樊洪海 1 王果 1 张辉 2 刘阳 3

1 中国石油大学石油工程教育部重点实验室北京 102249； 2胜利石油管理局钻井工艺研究院工具所山东东营 257017； 3 斯坦福大学美国加利福尼亚州斯坦福市 94305

收稿日期:2009-07-16 修回日期:2009-12-22 出版日期:2010-05-25 发布日期:2010-07-28
通讯作者: 樊洪海
作者简介:樊洪海，男，1962年9月生，1984年毕业于华东石油学院，现为中国石油大学（北京）教授，主要从事地层压力确定技术、油气井信息工程、油气井流体力学与泥浆流变学等方面的研究工作。
基金资助:
国家科技重大专项子课题（2008ZX05021-003）“窄密度窗口安全钻完井技术及装备”资助。

A four-parameter rheological model and its hydraulic calculation formula

FAN Honghai 1 WANG Guo 1 ZHANG Hui 2 LIU Yang 3

Received:2009-07-16 Revised:2009-12-22 Online:2010-05-25 Published:2010-07-28

摘要/Abstract

摘要：

提出了一种四参数流变模式，该模式能够精确地描述各种无时间依存关系的钻井液体系。利用多组测量数据评价了四参数流变模式对不同流体的拟合效果。根据管流特性参数法，并扩展应用到环空中，推导了管内与环空的层流压降计算公式，同时给出了紊流计算的半经验公式。通过引入广义流性指数的方法，给出了流态判别模型，使层流与紊流计算一致。根据四参数水力计算模型编制了计算机程序，利用一组不同来源的实验数据（包括管内与环空各种钻井液下的层流和紊流流动），验证了四参数模式的水力计算模型。与实测数据的对比表明，该模型计算结果与测量数据吻合得很好。说明该模式的水力计算模型要优于当前可用的流变模式。

关键词: 四参数流变模式, 流变参数, 广义流性指数, 广义雷诺数, 流态判别模型, 压降计算公式

Abstract:

A four-parameter rheological model was proposed for accurately describing any time-independent drilling fluid. A variety of data from literatures were used to evaluate the fitting effect of the four-parameter model to different fluids. A generalized hydraulic calculation model was developed, which was applicable to any time-independent non-Newtonian fluid. The laminar flow pressure loss computing model was built using the characteristic parameter method of pipe flow. The turbulent pressure loss was calculated by using the semi-empirical formula. The flow regime method was established by quoting a generalized flow behavior index and the generalized Reynolds number. The computer program of the four-parameter model was developed. The predictions of the developed method were compared with several sets of experimental hydraulic data from different sources. The tested cases include laminar and turbulent flows of various drilling fluids in both pipe and annular geometry. The generalized hydraulic calculation method is superior to currently available standard techniques.

Key words: four-parameter rheological model, rheological parameter, generalized flow behavior index, generalized Reynolds number, flow regime assessment model, pressure drop calculation formula

樊洪海王果张辉刘阳. 四参数流变模式及其水力计算模型[J]. 石油学报, 2010, 31(3): 511-515.

FAN Honghai WANG Guo ZHANG Hui LIU Yang. A four-parameter rheological model and its hydraulic calculation formula[J]. Editorial office of ACTA PETROLEI SINICA, 2010, 31(3): 511-515.

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四参数流变模式及其水力计算模型

A four-parameter rheological model and its hydraulic calculation formula

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