摘要
CO2泡沫压裂液具有非牛顿流体性质,其在实际施工条件下的油管流动特性直接影响到对井底射孔处的压力确定,从而对进行准确的裂缝预测、压裂效果评估具有重要的意义。对垂直下降管中CO2泡沫压裂液的管流阻力特性进行了实验研究,二氧化碳泡沫压裂液的摩擦阻力随着流速的增大而增大,随着温度和压力的增大而减小;并通过实验研究得出了泡沫压裂液在垂直下降管中流动时的摩擦阻力系数的计算关联式,其在本文实验工况下的平均计算误差为14.8％。
CO2 foam fracturing fluid behaves as a non-Newtonian fluid, whose flow characteristics in vertical oil pipe under the conditions of actual fracturing operation are directly relevant to the accurate evaluations of generated fracture and fracturing effects. The characteristics of fractional pressure drop of CO2 foam fracturing fluid in vertical downward pipe in the range of 10-20 MPa, 40-80℃ were studied experimentally with CO2 in supercritical state. The frictional pressure drop increases with the mixture velocity, and decreases with the increases of temperature and pressure. One correlation to calculate the frictional factor of such foam fluid was obtained from the test data, the average error of which is 14.8%.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2004年第6期977-979,共3页
Journal of Engineering Thermophysics
基金
国家自然科学基金资助项目(No.90210008)
关键词
泡沫压裂液
非牛顿流体
摩擦阻力
foam fracturing fluid
None-Newtonian fluid
frictional pressure drop
