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| A new rheological model and its application evaluation |
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FAN Hong hai1, FENG Guang qing1, WANG Guo1,2, LIU Yang3, ZHANG Hui4
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(1.MOE Key Laboratory of Petroleum Engineering in China University of Petroleum, Beijing 102249, China;2.SINOPEC Research Institute of Petroleum Engineering, Beijing 100101, China;3.Stanford University, Stanford, California 94305, USA;4. Drilling Technology Research Institute,Shengli Oilfield, Dongying 257017, China)
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| Abstract: |
| A new four parameter drilling fluid rheological model was proposed based on the evaluation of adaptation and virtues and defects of available rheological models. The parameters of rheological models were treated by using regression analysis method, and the rheological parameters were determined and evaluated. The rheological models were regressed and analyzed by testing data of different types of drilling fluid. The results show that for the testing six kinds of drilling fluids, the four parameter model could accuratly express drilling fluid rheological characteristics under different shear rates, and achieve the best matching effect and apply to all kinds of drilling fluids. The order of matching effect from good to poor is four parameter, H B, Casson, power law and Bingham model. |
| Key words: rheology rheological model reheological parameter four parameter model application evaluation regression analysis |
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