Gas Lock? Standard valves stay closed due to gas interference.
Heavy Oil? High viscosity prevents the valve ball from seating properly.
Low Efficiency? Delayed valve action leads to massive production loss.
100% Mechanical Action: Overcomes valve sticking in thick oil.
Anti-Gas Lock: Dramatically improves volumetric efficiency in gassy wells.
API 11AX Quality: Built to last in the harshest subsurface conditions.
The floating valve pair of our heavy oil recovery downhole pump adopts a robust opening and closing structure with a large flow channel area, which is convenient for heavy oil exploitation and helps prevent gas lock. The fixed valve of the heavy oil recovery downhole pump is made of tungsten carbide alloy, improving the timeliness and reliability of the valve pair closing. The working cylinder is added to the outside of the heavy oil recovery downhole pump to prevent the deformation of the pump cylinder during operation and production. It is suitable for deep wells. The heavy oil recovery downhole pump adopts a hanging method, which can automatically adjust the center and reduce the possibility of pump jamming. It has a certain adaptability to inclined wells. The heavy oil recovery downhole pump is suitable for the exploitation of gas wells, inclined wells, and deep heavy oil wells (viscosity below 2000MPa ·.s).
The core structure of a strong opening and closing sucker oil pump includes:
Coupling:
Outer barrel:
Rod string coupling:
Pulling the rod of the plunger:
Plunger:
Barrel:
Traveling valve:
Standing valve:
All structures of sucker rod pump are modularly designed, which is convenient for maintenance and replacement, reducing on-site operation time and operation and maintenance costs.
Pump bore (mm ) | Length of plunger (m) | Length of barrel (m) | Size of connecting tubing (in ) | Range of stroke (m ) | Pump constant | Size of connecting sucker rod | Max outside diameter |
| 44 | 0.6~1.2 | 4.5~7.2 | 2 7/2TBG | 3.0-6.0 | 2.23 | CYG19 | 88.9 |
| 57 | 3 1/2TBG | 3.69 | 108 | ||||
| 70 | 3 1/2TBG | 5.52 | 108 |
Founded over 20 years ago, DS Rod Pump (Dongsheng Oilfield) has established itself as a premier leader in the design and manufacturing of subsurface oil well pumps. Operating from a state-of-the-art 20,000-square-meter facility, we combine decades of field experience with advanced manufacturing to support the world’s most demanding oilfield operations.
Scale & Production Capacity
With a dedicated team of 150+ skilled professionals, we maintain a high production intensity, delivering up to 3,000 sets of rod pumps per month. Our annual output value exceeds RMB 50 million, reflecting our stability and large-scale supply chain capability as a top-tier manufacturer.
"At DongSheng, we understand that subsurface pump failure translates directly into costly downtime and lost production. That’s why every Forced Opening Valve Insert Pump is manufactured to the strictest API 11AX and ISO 9001 standards.
To ensure flawless performance in your most challenging high-viscosity and gassy wells, each unit undergoes a comprehensive 100% vacuum testing and pressure integrity check before leaving our facility.
SLB (Schlumberger)
Weatherford
Sinopec (China Petroleum & Chemical Corporation)
CNPC (China National Petroleum Corporation)
ZPEC (Zhongman Petroleum and Natural Gas Group)
CSSC (China State Shipbuilding Corporation)
We offer tailored logistics solutions based on your urgency and project location:
Sea Freight (LCL/FCL): The most cost-effective method for bulk orders. We regularly ship from Tianjin, Qingdao, and Shanghai ports to major global oil hubs like Houston, Dubai, and Singapore.
Multimodal Land Transport: For clients in Central Asia, we utilize the China-Europe Railway Express and cross-border trucking for faster, door-to-door delivery.
"Not sure which pump configuration is right for your well conditions?"
Stop guessing and start producing. Our senior engineering team is ready to provide you with a Free Pump Selection Consultation based on your well depth, fluid viscosity, and sand concentration.
[Inquire Now]
Email: [jason@tldspm.com] | WhatsApp: [+86-15104247781]
