Product introduction
Advantages
Excellent Fatigue Resistance
In oilfield extraction, composite sucker rod for rod pumping systems undergoes continuous up-and-down reciprocating motion, subjected to cyclic alternating tensile forces. Steel sucker rods, being crystalline in structure, will gradually develop cracks under repeated stress. Combined with continuous corrosion from downhole media, these cracks propagate, eventually leading to rod breakage and frequent downtime for maintenance. Carbon fiber composite materials, lacking a metallic crystalline structure, are less prone to cracking under reciprocating tensile conditions, resulting in a longer service life.
Superior Specific Strength
Manufactured using a continuous unidirectional high-carbon fiber pultrusion process, the carbon fiber composite sucker rod has a material density only one-fifth that of steel, while its tensile strength is up to ten times that of steel, resulting in a significant advantage in specific strength. Under the same downhole tensile stress conditions, the lightweight sucker rod reduces the self-weight of the rod string, lowering the load on the pumping unit and significantly improving oilfield energy efficiency.
Corrosion Resistance
This corrosion resistant sucker rod, made of a non-metallic composite material, is naturally resistant to corrosive media commonly found in oilfield gases, such as brine, carbon dioxide, and hydrogen sulfide. Compared to traditional sucker rods, it requires no additional coating maintenance, reducing maintenance costs.
Comparison between Carbon Fiber Standard Sucker Rod and Continuous Rod
Carbon fiber standard sucker rod
The construction process remains unchanged, and the construction team can complete the construction without training;
Accessories are compatible with existing steel sucker rods;
Compared to large reels with continuous rods, transportation is more convenient and storage is easier;
Short poles are currently easier to industrialize and popularize than continuous poles.
Carbon fiber continuous sucker rod
After being lowered into the well with a shorter rod, the overall weight is lighter, more wear-resistant, and more energy-efficient;
Combined with specialized equipment and technology, the construction of lowering and lifting is simpler, and 2-3 people can complete the construction;
Cable and signal lines can be added to achieve real-time data feedback underground, improving the level of underground intelligence;
Under the widespread use of specialized equipment in the future, continuous poles will be more efficient and intelligent than short poles.
Carbon Fiber Sucker Rod vs Steel Sucker Rod Comparison
| Performance Factor | Carbon Fiber Sucker Rod | Steel Sucker Rod |
| Material | Carbon fiber reinforced polymer | Steel alloy |
| Weight | Lightweight | Heavy |
| Corrosion resistant | Excellent inherent resistance | Requires protection |
| Fatigue performance | High fatigue resistance | Moderate |
| Energy efficiency | Reduced pumping load | Higher operating load |
| Application range | Deep, corrosive, and challenging wells | Conventional wells |
Adaptive well types
Wellbore contradiction serious well
Horizontal well initial drainage
Ultra-deep wells (pump depth >1800m)
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Carbon Fiber Sucker Rod
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