| STUDY ON STEADY SURGE PRESSURE FOR YIELD-PSEUDOPLASTIC FLUID IN A CONCENTRIC |
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| 作者姓名： | 汪海阁 刘希圣 |
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| 作者单位： | Petroleum Department of Petroleum University，Beijing 100083，P. R. China |
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| 摘 要： | ＷａｎｇＨａｉｇｅ（汪海阁）；ＬｉｕＸｉｓｈｅｎｇ（刘希圣）（ＲｅｃｅｉｖｅｄＪｕｌｙ８，１９９４；ＣｏｍｍｕｎｉｃａｔｅｄｂｙＣｈｉｅｎＷｅｉｚａｎｇ）Ａｂｓｔｒａｃｔ：Ｓｕｒｇｅｐｒｅｓｓｕｒｅｃａｕｓｅｄｂｙｐｉｐｅｍｏｖｉｎｇｔｈｒｏｕｇｈｔ...
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BSTUDY ON STEADY SURGE PRESSURE FOR YIELD-PSEUDOPLASTIC FLUID IN A CONCENTRIC ANNULUS |
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| Wang Haige,Liu Xisheng.STUDY ON STEADY SURGE PRESSURE FOR YIELD-PSEUDOPLASTIC FLUID IN A CONCENTRIC[J].Applied Mathematics and Mechanics(English Edition),1996(1). |
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| Authors: | Wang Haige Liu Xisheng |
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| Abstract: | Surge pressure caused by pipe moving through the wellbore full of drilling .fluid is the main factor affecting wellbore stability, on which the additional mud density isdesigned. Thus if is desired to predict the surge pressure with high accuracy. While this is closely, related with the selection of mud rheological models. Yield-Pseudoplastic model which has three parameters and is.famous for its higher accuracy has been used to describe the mud rheological properties in recent years. Based on this model the paper presents a new theoretical model for calculating surge pressure caused by mud viscosity during tripping or casing in a concentric annulus of directional wells under steady laminar situation. For convenience, the paper plots the distribution of the coefficients of surge pressure for different conditions. An example is given. These results provide the basis for controlling pressure surges and tripping velocity. |
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| Keywords: | non-Newtonian fluid surge pressure tripping annular space directional wells |
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