Hydraulic feedback type thick pump
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- 产品描述
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The pump moves with the help of the feed-back force when the pump is operating so the pump is very suitable for sucking heavy crude oil.The pump can work smoothly in a heavy crude oil with the viscosity smaller than 4000 centipoise. There is no standing valve in the pump.It is not necessary to install the oil drainers in down-hole and the well-testing and vapour injection operation can be done without lifting the tubing strings.
Pump bore
（mm）
Length of plunger
（m）
Length of barrel
（m）
Range of
Stroke
（m）
Size of connecting
Tubing
（in）
Size of connecting sucker rod
Pump constant
57/38
2 1/2 TBG
CYG19
1.91
70/38
3 TBG
CYG22
3.91
70/44
0.6～1.2
2.7～6.6
1.8～5.1
3 TBG
CYG22
3.35
83/44
3 1/2 TBG
CYG25
5.60
87/57
3 1/2 TBG
CYG25
4.25
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Hydraulic feedback type thick pump
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