期刊
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
卷 174, 期 -, 页码 821-832出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.petrol.2018.12.003
关键词
Viscoelasticity fluids; Pore-throat structure; 3-D velocity field; Flow pattern; Pressure drop
资金
- National Natural Science Foundation of China [U1663206, 51704313]
- National Science Fund for Distinguished Young Scholars [51425406]
- Fundamental Research Funds for the Central Universities [18CX02028A]
The flow characteristics of viscoelasticity fluids in different pore-throat structures were explored with Re number increasing from 0.399 to 4.15. Flow behaviors of polymer solution with different concentrations were investigated by micro-particle image velocimetry (mu PIV). Three different flow patterns termed as single-peak flow, double-peaks flow and multi-peaks flow were distinguished by 3-D velocity fields. Additionally, we found the pressure drop (Delta P) was linear with flow rate (Q) in single-peak pattern, the slope of Delta P-Q curve deviated from the constant value in double-peaks flow pattern and reached a constant value finally in multi-peaks pattern. Flow patterns map for viscoelasticity fluids in different pore-throat structures was established, which was separated into three areas corresponding to the pressure drop and elastic.
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