Exceed through Duxatech offers a variety of innovative and advanced styles of sucker rod products that provide superior performance, even in the toughest downhole conditions. Exceed's pin and coupling threads are rolled and cold-forged for superior strength, and are either phosphated or copper-coated to avoid thread galling issues.
For progressive cavity pump (PCP) applications, Exceed provides the industry-recognized modified pin connection for all of our rod product lines. This downsized long pin connection provides higher torque transfer, less flow restriction, and longer fatigue life. Duxatech also offers our patented dove-tail type of connection in our EHT category for transferring a higher torque with a downsized rod body to overcome slip/backspin issues.
▸ ED rod: Smaller and stronger than traditional API D Grade rods
▸ EKD rod: D Grade strength for longer run times in corrosive conditions
▸ EH rod: Ultra-high strength suitable for heavy load/deep wells
Conventional approaches of adopting or modifying traditional sucker rods for PCP applications often came short in meeting the higher torque and other unique requirements of PCP.
The current generation EHT features our patented locking dove-tail connection and case hardened rod body. With this special dove-tail design, the torque is on the body; not on the thread which prevents slip/backspin issues. The case hardened rod body doubles its durability.
Overall, it offers 20-30% higher torque. Customers who switched to EHT have seen the benefits of reduced load, improved operating efficiency and lower failure rate.