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Hydraulic feedback type thick pump
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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Pumping and mixing pump
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