The RHA insert rod pump is a heavy-wall, top hold-down pump that is engineered for dependable operation in sandy, medium-depth, and gas-prone wells. Manufactured as per the API 11AX norms, it offers better strength and wear resistance over the thin-wall pump constructions, thus it is perfect for the tough conditions of oilfields.
R → Rod Pump.
H → Heavy Wall Barrel, suitable for highly abrasive and high-pressure well conditions.
A → Top Anchor, meaning the pump is secured to the tubing via its top anchor.
Thus, the RHA is an insert pump for oil wellsp consisting of a fixed barrel, a thick-walled pump barrel, and a top anchor.
This design significantly improves wear resistance and reduces the impact of sand and gas interference, helping extend pump service life and reduce maintenance frequency.
Wells with medium depth and moderate load
Wells with sandy zones and continuous sand production
Wells with a gas or foam problem
Wells that require higher durability than thin-wall pumps
Cost is higher than thin-wall pumps (RWA/RWB)
Minor efficiency drop in low-load wells
Unneeded in clean, low-sand wells
The thick-wall barrel gives the pump a much stronger and more durable body
Fighting wear and corrosion even better
More appropriate for tougher environments than RWA pumps
Consistent performance even when the load is moderate to high
The RHA pump is available in various sizes and material configurations to meet different well depths and operating conditions.
| Downhole rod pump specifications | |||||
| 2 3/8x1 1/4 (60.3x31.8) | 2 7/8X1 1/2 (73.0X38.1) | 2 7/8x1 3/4 (73.0X44.5) | 3 1/2X2 1/4 (88.9x57.2) | ||
| Downhole rod pump code | |||||
| 20-125 RHACabc | 25-150 RHACabc | 25-175 RHACabc | 30-225 RHACabc | ||
| Symbol | Name | Part number of RHA insert rod pump | |||
| B12 | Thick-walled pump cylinder | B12-125a | B12-150a | B12-175a | B12-225a |
| B21 | Valve stem reducer | B21-20 | B21-25 | B21-25 | B21-30 |
| B22 | Pump cylinder valve housing reducer | B22-20 | B22-25 | B22-25 | B22-30 |
| C12 | Plug upper valve housing | C12-125 | C12-150-25 | C12-175 | C12-225 |
| C13 | Externally threaded plunger closed valve housing | C13-125 | C13-150 | C13-175 | C13-225 |
| C14 | Pump cylinder closed valve housing | C14-20 | C14-25 | C14-25 | C14-30 |
| C31 | Extension junction box | C31-125c | C31-150c | C31-175c | C31-225c |
| G11 | Valve stem guide sleeve | G11-20 | G11-25 | G11-25 | G11-30 |
| P12 | Valve seat pipe plug | P12-125 | P12-150 | P12-175 | P12-225 |
| P21 | Integral column | P21-125b | P21-150b | P21-175b | P21-225b |
| R11 | Valve stem | R11-20e | R11-25e | R11-25e | R11-30e |
| S11 | Support cup mandrel (type HR) | S11-20 | S11-25 | S11-25 | S11-30 |
| S12 | Support cup (type HR) | S12-20 | S12-25 | S12-25 | S12-30 |
| S13 | Support cup seat ring (type HR) | S13-20 | S13-25 | S13-25 | S13-30 |
| S14 | Support cup pressure cap (type HR) | S14-20 | S14-25 | S14-25 | S14-30 |
| S15 | Support cup reducer | S15-20 | S15-25 | S15-25 | S15-30 |
| VII | Valve ball and seat | ||||
| Floating valve | V11-125 | V11-150 | V11-175 | V11-225 | |
| Stationary valve | V11-175 | V11-225 | V11-225 | V11-25 | |
| NOTE: All dimensions for API insert pumps are in millimeters with inches in parentheses.
Specifies pump barrel length in meters (feet). Standard lengths are from 0.61m (2ft) to 12.19m (40ft), with length increments of 0.305m (1ft).
Specifies nominal plunger length in meters (feet). Fit tolerances are in hundredths of a millimeter (thousandths of an inch).
Specifies total extension coupling length in thousandths of a meter (full foot). Standard lengths are in increments of 0.152m (1/2 ft).
If the male threaded connection for plunger P21 is FIA, a valve seat must be installed between C12 and P21. Refer to part P21.
Refer to part R11 for valve stem components. | |||||
The above are detailed specifications for the RHA API insert pump.
We also offer other API insert pump models:
RHB API Insert Pump
RWA API Insert Pump
RWB API Insert Pump
RWT API Insert Pump
RXB API Insert Pump
| Type | Wall | Anchor | Best For |
| RHA | Thick | Top | Sand + medium depth |
| RHB | Thick | Bottom | Deep wells |
| RWA | Thin | Top | Low load sandy wells |
The material of the barrel: Alloy steel / stainless steel
Surface finishing: Chrome plating, nickel plating
Plunger clearance customization capability
Corrosion-resistant
Q: What is the difference between RHA and RWA pump?
A: RHA pump is the one which use a thick-wall barrel and can be considered for higher load and harsh conditions, on the other hand RWA is a very light-duty pump.
Q: Is RHA suitable for sandy wells?
A: Yes, it is the ideal choice for sand-producing wells in case of some operation.
Q: What depth is RHA pump suitable for?
A: Mostly, medium-depth wells are pumped with RHA.
Q: Can RHA pump handle gas interference?
A: Yes, it can be used for gas or foam-prone wells.
Dongsheng is deeply involved in the research, development, production, and marketing of API Insert Pumps and their related accessories. Our mission is to offer top-notch, API Insert Pumps that are made according to the standards and also provide solutions to the worldwide oil and gas industries. Using the latest technologies, thorough quality checks, and full after-sales services, our API Insert Pumps are being sold to many oil and gas markets such as the Middle East, South America, North America, and Southeast Asia.
We have formed long-standing ties with some of the world's most famous energy and engineering companies, among which are:
CSSC、SLB、Weatherford、Sinopec、CNPC.
Installation Guide: We offer comprehensive illustrated manuals and remote video lessons for insert pump for oil wells in order to assist our clients to start up rapidly.
Remote guidance: Our technical team is ready to help clients with immediate insert pump for oil wells technical problem solving through phone, e-mail, and video communications.
