Don-Nan RHB API Insert Pumps | Schlumberger

Don-Nan RHB API Insert Pumps

RHBC and RHBM standard sucker rod pumps

Pump efficiently at greater depths

RHB API insert pumps are heavy-walled, stationary barrel, bottom hold-down pumps recognized by API as a standard design. These pumps are recommended for depths of 8,000 ft [2,438 m] or greater when there is little chance of sand accumulation. If sand is an issue, nonstandard accessories such as a top seal can be used to prevent a stuck pump.

These pumps can also be modified for use as a stroke-through pump to release sand and other material. To minimize damage to the plunger and barrel, a grooved-body plunger is often used to catch and carry the sand away from those components.

Seating options on this pump include mechanical or cup types suitable for high temperatures and mechanical types for simplified 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 and unsetting by placing the weight of the sucker rods down on the pump or lifting up.

RHB API Insert Pump
Stationary assembly: A=Guide, valve rod; B=Connector; C=Coupling, extension; D=Barrel, heavy wall; E=Cage, closed barrel; F=Valve, ball and seat | Traveling Assembly: G=Bushing, valve rod; H=Rod, valve; I=Coupling, plunger adapter; J=Plunger; K=Cage, closed plunger; L=Valve, ball and seat; M=Plug, seat | Seating Assembly: N=API, 3-cup
Don-Nan RHB 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 products

  • Top seal: Prevent a stuck pump scenario caused by solids accumulation around the hold-down.
  • Sand shield: Proactively reduce particulate collection near the hold-down.
  • Sand diverter: Direct solids away from the pump barrel, maintain downhole pump integrity, and extend run life.
  • Bottom discharge valve: Keep particulate matter from settling and sticking the pump and greatly reduce the adverse effects of corrosive fluid.

Gas specialty product

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