Tubing Pump with One Piece Barrel
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Tubing Pump with One Piece Barrel
Introduction
Tubing pump with one piece barrel is a kind of conventional tubing pump. By reciprocating of plunger up and down, the raw oil is pumped out through the cavity inside of the barrel under the action of vacuum.
Pump barrel assembly is directly connected to bottom end of tubing and the plunger assembly goes down into the barrel along with sucker rod. The pump consists of barrel assembly and plunger assembly, so the pump diameter can be larger to allow high oil output. And the pump is applicable to shallow, medium and deep wells with efficient liquid supply, but the sucker rod string must be drawn out completely during operation.
Working Principle
During pumping, plunger moves up and down by reciprocating of sucker rod.
When up-stroking, travelling valve is closed and standing valve is open, then well fluid flows into tubing, at the same time, well liquid is forced into barrel bottom from standing valve by the pressure of pump inlet.
When down-stroking, standing valve is closed and travelling valve is open, then the well fluid in the bottom barrel flows into top barrel through plunger bore. By reciprocating of plunger, the fluid in well is sucked from the well.
Technical Parameters
|
type
|
API
|
25-(112～225)TH
|
30-275TH
|
35-325TH
|
40-375TH
|
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|
GB
|
CYB28TH～57.15TH
|
CYB69.85TH
|
CYB82.55TH
|
CYB95.25TH
|
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|
Nominal Diameter
|
28
|
31.75
|
38.1
|
44.45
|
57.15
|
69.85
|
82.55
|
95.25
|
|
|
Plunger Length
|
1200
|
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Barrel Length
|
3000～12000
|
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Upper Tubing THD
|
2 7/8″
|
2 7/8″
|
2 7/8″
|
2 7/8″
|
2 7/8″
|
3 1/2″
|
4″
|
4 1/2″
|
|
|
NU
|
NU
|
NU
|
NU
|
NU
|
NU
|
NU
|
NU
|
||
|
Lower Tubing THD
|
2 7/8″
|
2 7/8″
|
2 7/8″
|
2 7/8″
|
2 7/8″
|
2 7/8″
|
3 1/2″
|
3 1/2″
|
|
|
NU
|
NU
|
NU
|
NU
|
NU
|
NU
|
NU
|
NU
|
||
|
Sucker Rod THD
|
3/4″
|
3/4″
|
3/4″
|
3/4″
|
3/4″
|
7/8″
|
1″
|
1″
|
|
|
Pump Constant
|
0.88
|
1.14
|
1.64
|
2.24
|
3.69
|
5.5
|
7.79
|
10.2
|
|
|
Max OD
|
88.9
|
88.9
|
88.9
|
88.9
|
88.9
|
108
|
114
|
132
|
|
|
Note: The upper and lower tubing thread can be supplied as per customers’ requirement.
|
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