API Sucker rod tubing pump

With 30 years of experience, Sanjack is devoted to designing, researching and developing pumping units.

It has an annual sales volume of up to 1200 units.

Sanjack pumping unit cover the API conventional and unconventional pumping units.

Relying on technical strength, complete equipment, scientific production fixture and strict production process;

Tubing pump

The whole barrel tubing pump has been widely used in mechanical oil recovery in oil fields. It is a rational rod-type oil recovery equipment for medium and deep wells. The whole barrel type pump is in accordance with American Petroleum Institute API SPEC 11AX “Subsurface Rod Pump and Its Fittings and GB/T 18607 “Specifications for pumping pump and its components”. Our company has a history of producing subsurface pumps for more than 50 years. The products we produce are of good quality and reliable performance, and can manufacture pumps with different strokes and clearances according to user requirements. Our tubing pumps consist of mechanical support tubing pump, cup support tubing pump, standing valve non-extractable pump.

Structural characteristics and working principle

  • Structural Characteristics

The tubing pump is structurally robust and consists of pump barrel plunger, an oil drain (optional), standing valve, and extension nipple. The pump barrel is installed at the bottom of the tubing, the standing valve is installed under the pump barrel, the plunger is connected to the sucker rod, and the entire plunger is placed in the pump barrel, above the standing valve.


  • Working Principle

When the pumping unit is in motion, the sucker rod and the plunger are driven to reciprocate linearly in the pump barrel to recovery oil. When the plunger is running on the stroke, under the action of the gravity of the liquid column in the oil pipe, the traveling valve is closed, and the pressure in the pump barrel below the plunger is lowered, and the standing valve is opened under the action of the oil pressure in the annular cavity of the casing. The oil enters the cavity created by the upward movement of the plunger. When the plunger is stroked down, the standing valve is closed, and the pressure inside the pump barrel under the plunger increases. The traveling valve is opened, so that when the plunger is stroked, the well fluid passing through the standing valve passes through the cavity of the traveling valve and the plunger during the down stroke, into the annular cavity between the sucker rod and the oil pipe above the plunger . On the next upstroke, these well fluids are lifted together with the remaining well fluid in the annular cavity of the tubing and sucker rods. In fact, only the upstroke is lifted.

Applicable condition
1.Sand content in well fluid ≤0.2%

2.he total salinity dissolved in the well fluid does not exceed 10000mg/L or the chloride does not exceed 6000mg/L, the hydrogen sulfide content is less than 10ppm, and the carbon dioxide content is less than 250ppm.

3.Gas-liquid ratio ≤60m3/m3, well deviation ≤30°

4.Ban touching pumps



Pump code25-106TH25-125TH25-150TH25-175TH25-200TH25-225TH30-250TH30-275TH40-325TH40-375TH
Basic pump diameter1  1/161 1/41 1/21 3/422 1/42 1/22 3/43 1/43 3/4
Plunger length≤26(7925)
Pump barrel length≤34(10363)
Stroke ft (mm)≤32(9754)
Connecting tubing thread2 7/8 NU(EU)3 1/2 NU(EU)4NU4EU
Connecting sucker rod thread3/4 in7/8 in1 in
Theoretical displacement0.824 sn1.140 sn1.642 sn2.235 sn2.918 sn3.694sn4.560 sn5.518 sn7.707 sn10.261 sn
Maximum outer diameter (mm)

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