1. Description:
The rod pump is connected to sucker rod after being assemblied on the surface then it is pulled down to the well bottom through the tubing. Thus it is convenient for the inspection and work over because they can be pulled up and down through the tubing and suitable for deeper well.
The life span of tubing can be prolonged for decreasing the times of the thread of the tubing being turned on and off and the time of the work over.
2. Features:
Surface of the plunger is coated with nickel alloy and inside wall of the barrel is coated with hardness chrome.
All the main parts of valve case, ball, and seat are made of strong corrosion-resisting and excellent mechanical properties material.
Subsurface sucker rod pumps and fittings
| Pump bore | Length of plunger(ft) | length of barrel(ft) | range of stroke (in) | size of connecting tubing(in) | size of connecting sucker rod | pump constant d/ft3 | | 125 | 2-24 | 6-32 | 4-26 | 2'' | CYG16 | 40.948 | | 150 | 2 | CYG16 | 57.539 | | 175 | 2 | CYG16 | 77.307 | | 225 | 2 | CYG19 | 124.962 | | 275 | 3 | CYG22 | 195.562 | | 325 | 3 | CYG22 | 274.987 | | 375 | 4 | CYG22 | 360.413 | | 425 | 4 | CYG25 | 482.90 |
Subsurface sucker rod pumps and fittings| 1 | 2 | 3 | 4 | 5 | | Type of Pump | Letter Designation | | Metal Plunger Pumps | Soft-Packed Plunger Pumps | | heavy-wall barrel | thin-wall barrel | heavy-wall barrel | thin-wall barrel | | rod pump stationary barrel,top anchor | RHA | RWA | ---- | RSA | | stationary barrel,bottom anchor | RHB | RWB | ---- | RSB | | stationary barrel,bottom anchor | RHT | RWT | ---- | RST | | tubing pump | TH | ---- | TP | ---- |
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