四参数模式钻井液在旋流器内的数值模拟分析  

Numerical Simulation Analysis of Four-parameter Mode Drilling Fluid in Hydrocyclone

作　　者：谢超[1] 马强[1] 贾玉芬 曾家宏 王雨蒙 XIE Chao;MA Qiang;JIA Yu-fen;ZENG Jia-hong;WANG Yu-meng(China Petroleum Pipeline Engineering Co.,Ltd.;Xi’an Oil and Gas Transmission Co.,PipeChina Northern Pipeline Co.,Ltd.;Langfang Branch Co.,Beijing Orient Huazhi Petroleum Engineering Co.,Ltd.)

机构地区：[1]中国石油天然气管道工程有限公司 [2]国家管网集团北方管道有限责任公司西安输油气分公司 [3]北京东方华智石油工程有限公司廊坊分公司

出　　处：《化工机械》2022年第2期268-275,349,共9页Chemical Engineering & Machinery

基　　金：国家重点研发计划(2017YFC0805802)。

摘　　要：分析四参数模式钻井液在水力旋流器内的旋流特性,将其与幂律模式钻井液进行对比计算。建立75 mm直径双入口旋流器模型,结合RSM计算模型,选取二者特征分布相似的位置分析。速度场大小分布相似,四参数模式下最大切向速度为15.44 m/s,幂律模式下为16.24 m/s,自由涡区域速度差异最明显,速度场分布滞后于幂律模式。两者的静压差值在壁面达到最大,四参数模式最大静压为0.678 MPa,最小静压为-0.057 MPa,均小于幂律模式下的(0.661、-0.053 MPa);四参数模式入口与底流口的平均压降为0.572 MPa,小于幂律模式下的0.678 MPa;四参数模式旋流场压力损失与梯度压力均小于幂律模式。通过计算多种粒径固相颗粒的分离效率,四参数模式比幂律模式平均低10%左右,四参数模式中,固相颗粒的分离更难。The swirl characteristics of the four-parameter rheological drilling fluid in the hydrocyclone were analyzed and compared with the power-law drilling fluid, including having the model for a double inlet cyclone with 75 mm in diameter established;through combined with RSM calculation model, the position analysis with similar feature distribution was selected. The size distribution of velocity field is similar. The maximum tangential velocity of the four-parameter is 15.44 m/s and that of power law model is16.24 m/s. The velocity difference in the free vortex region is the most obvious and the velocity field distribution is more sluggish than the power-law model. Static pressure difference between the two models reaches the maximum at the wall sorface. Four-parameter’s maximum static pressure is 0.678 MPa along with-0.057 MPa for the minimum static pressure, which both smaller than power-law’s 0.661 MPa and-0.053 MPa, respectively. The average pressure drop of the four-parameter mode’s inlet and the bottom flow is 0.572 MPa, which is less than 0.678 MPa of the power-law model. Form this point, the pressure loss and gradient pressure of the four-parameter mode are less than that of the power-law. Calculating the separation efficiency of solid particles with multiple particle sizes shows that, the four-parameter model is about 10% lower than the power-law model, and the separation of solid particles is more difficult in the four-parameter model.

关 键 词：水力旋流器 四参数流变模式 幂律模式 旋流特性 分离效率 

分 类 号：TQ051.8[化学工程]