Don-Nan RHA API Insert Pump | Schlumberger

Don-Nan RHA API Insert Pump

RHAC and RHAM standard sucker rod pumps

Prevent the pump from becoming stuck

RHA API insert pumps are heavy-walled, stationary barrel, top anchor pumps recognized by API as a standard design. These pumps are suitable for moderate depths with high sand fallback on well shutdown. Fluid dispersion directly above the seat nipple prevents the pump from becoming stuck in such a situation.

The heavy-walled barrel is less sensitive to pressure and therefore can be run slightly deeper than the otherwise similar thin-walled RWA API insert pumps.

Seating options on this pump include mechanical or cup types suitable for high temperatures and mechanical types to simplify well maintenance. A mechanical hold-down does not require repair unless major damage has occurred, whereas cups should be replaced every time the pump is unset. Both hold-down types follow the same procedure of setting by placing the weight of the sucker rods down on the pump and unsetting by lifting them up.

This pump can be further optimized by selecting the metallurgy and coating of various components to maximize pump life in specific well conditions.

RHA API Insert Pump
Stationary assembly: A=Guide, valve rod; B=Connector, upper barrel; C=Coupling, extension; D=Barrel, heavy wall; E=Cage, closed barrel; F=Valve, ball and seat; G=Bushing, seat, barrel cage | Traveling Assembly: H=Bushing, valve rod; I=Rod, valve; J=Coupling, plunger adapter; K=Plunger; L=Cage, closed plunger; M=Valve, ball and seat; N=Plug, seat | Seating Assembly: O=API, 3-cup
Don-Nan RHA API Insert Pumps
Applications
Sandy, low-fluid-level, gassy or foamy, and shallow- to moderate-depth wells
Benefits
Full submersion in fluid and greater depth capability than RWA API insert pump
Features
Heavy-walled barrel, top anchor hold-down, and universally accepted design

Address common problems such as rodstring wear and damage caused by gas interference, erosion, or insufficient fluid levels. 

Sucker Rod Pump

Extend the life of your rod lift system with greater flexibility

These products provide greater flexibility during operations and can extend the life of the rod lift system.

Sand specialty product

  • Sand diverter: Direct solids away from the pump barrel, maintain downhole pump integrity, and extend run life.

Gas specialty product

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