scholarly journals Physical experiment on the feasibility of variable-gradient drilling method based on downhole separator

2022 ◽  
Vol 8 ◽  
pp. 1591-1601
Author(s):  
Hongwei Yang ◽  
Jun Li ◽  
Hui Zhang ◽  
Gonghui Liu ◽  
Geng Zhang ◽  
...  
2021 ◽  
Author(s):  
Hongwei Yang ◽  
Jun Li ◽  
Hui Zhang ◽  
Gonghui Liu ◽  
Geng Zhang ◽  
...  

1983 ◽  
Vol 141 (11) ◽  
pp. 469 ◽  
Author(s):  
V.V. Pikalov ◽  
N.G. Preobrazhenskii

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