API 11AX Type B Rod Pump

API 11AX Type B Rod Pump
SanJack rod pump assembly workshop has honing machine, complete rod pump pressure test device and other equipment. After the inner wall of the pump barrel is hardened, the inner hole of the pump barrel needs to be honed on the honing machine to achieve the required accuracy. The sealing performance test of the rod pump must be conducted 100% after the assembly of the whole pump to fully ensure the quality of the rod pump.

All metal, thick-wall, fixed-barrel, bottom-anchor RHB rod pump is an ideal choice for deep wells with severe pumping conditions. RHBC models have cup seat assemblies. RHBM models have a metal seal that can be re-fixed many times without replacement.

The RHBC and RHBM pumps are recommended for the following applications:
• Wells with low static-fluid levels
• Deep wells
• Gaseous wells (when pump is run in conjunction with a good oil-gas separator or
gas anchor)
• Wells that might pound fluid
These pumps are not designed to operate in sand wells, but can be modified to suit these conditions using top seal assemblies or bottom discharge valves.

The stationary-barrel design is superior to traveling-barrel versions for low fluid levels because the fluid to be pumped has only to pass the larger standing valve located immediately above the shoe. This design maximizes recovery and minimizes the tendency to foam.
RHB API insert pump is a thick wall, stationary barrel, bottom hold down pumps of standard design approved by API. When the possibility of sand accumulation is low, it is recommended to use these pumps for depths of 8000ft or more. In case of sand problems, non-standard accessories (such as top seal) can be used to prevent the pump from seizing.
These pumps can also be converted into in-line pumps to release sand and other materials. To minimize damage to the plunger and barrel, slotted plugs are usually used to capture and remove sand from these components.

The valve seat type of the pump includes mechanical or cup type suitable for high temperature and mechanical type that simplifies well maintenance. Unless major damage occurs, the mechanical hold down device does not need to be repaired, and the cup should be replaced every time the pump is not installed. Both 2 types of hold down follow the same setup procedure, i.e. the weight of the sucker rod is placed on the pump, and then it is lifted and fixed.

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