一种钻井液四参数流变模型
A Four-Parameter Rheological Model of Drilling Fluid
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- 引用格式:
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刘世界,雷英,秦鹏,杨宇光,蔡振华.一种钻井液四参数流变模型[J].天然气与石油,2019,37(4):0.doi:
Liu Shijie, Lei Ying, Qin Peng, Yang Yuguang, Cai Zhenhua.A Four-Parameter Rheological Model of Drilling Fluid[J].Natural Gas and Oil,2019,37(4):0.doi:
- DOI:
- 作者:
- 刘世界1 雷 英2 秦 鹏1 杨宇光3 蔡振华1
Liu Shijie1, Lei Ying2, Qin Peng1, Yang Yuguang3, Cai Zhenhua1
- 作者单位:
- 1. 中海油能源发展股份有限公司工程技术分公司,2. 中国石油西南油气田公司川中油气矿,3. 中联煤层气有限责任公司
1. Unconventional Oil & Gas Technology Research Institute, Ener Tech-Drilling & Production Co., CNOOC, Tianjin, 300457, China；2. Central Sichuan Oil and Gas District, PetroChina Southwest Oil and Gas Field Company, Suining, Sichuan, 629000, China；3. China United Coalbed Methane Co., Ltd.
- 关键词:
- 钻井液;流变模式;数学模型;牛顿迭代算法
Drilling fluid; Rheological pattern; Mathematical model; Newton algorithm
- 摘要:
流变性是钻井液性能的重要参数,常规流变模型表征这一特性存在较大偏差,根据相关研究结果,提出新的流变模型=aebγ-ce-dγ及求解方法,并编制了相应计算程序。经两种钻井液实测流变数据拟合验证,新建模型拟合的误差平方和小,确定系数大,其拟合效果好于常规流变模型的拟合效果,可更好地表征钻井液的流变特性。因此，该模型为钻井液流变特性较精确的表征方法，建议进行推广应用。
According to the characteristics of rheological curves of drilling fluids, a new rheological model is proposed.The new model has strong non-linear characteristics, according to the Newton algorithm,and MATLAB tools are used to compile the calculation program to optimize the rheological parameters, and SSE, RMSE and R2are selected to estimate the fitting effect of rheological data.The measured data show that the model error is small, and the determination coefficient is large, so the model in this paper can greatly improve the characterization degree of rheological data.
