Sucker rods are pivotal in maintaining oil production long after a well's completion. However, the steel used to manufacture these rods is highly susceptible to corrosion, which accounts for about half of the reported failures. Whether used onshore or offshore, protecting these core components during transport, storage, and installation is crucial for the operational efficiency of every well. MSI Pipe Protection Technologies emphasizes the significance of this oil country tubular good.
Functional Application of Sucker Rods in the Oilfield
Industry Sucker rods typically range from 25 to 30 feet in length and are connected end-to-end by threading to form a rod string. Manufacturers produce different grades of tensile strength based on specific well requirements, with grades C and D being the most common. Grade K offers the highest level of corrosion protection. The American Petroleum Institute (API) sets the standards for the graded strengths of these rods.
These rods connect the mechanical lift to the downhole of the well, where a plunger extracts fluid to the surface using the oscillating motion of a prime mover. A walking beam, pitman arm, Samson post, and saddle bearing ensure the vertical lift of the rod string at all times.
Vital in Oil Production
While wells may initially flow naturally after completion, the flow rate decreases over time. To sustain production, a mechanical lift connected to a downpipe pump prolongs yield beyond natural capabilities.
Sucker rods transfer the kinetic energy of the prime mover down the well, facilitating oil extraction via a pump. The string's design depends on the well's depth and the volume of subterranean fluid to be extracted. Over time, the rods may stretch or degrade, necessitating their removal, inspection, servicing, and reinsertion into the well in the exact order they were pulled out.
Sucker Rod Protection Essentials
Given the stresses experienced by the rod string during operation, maintaining their integrity is crucial. Rod threads must seal consistently between sections. Any defect can lead to erosion, separation, or a break in the shank. In such cases, operators must carefully retrieve the rod without disturbing the pump or causing any damage to the tube.
Sucker rod caps, made from high-density polyethylene, are easily installed and provide complete protection for rod threads throughout all operational stages. Non-threaded plugs also safeguard against debris, corrosion, and damage during storage or transport.
Vigor manufactures sucker rods in strict compliance with NORRIS & API 11B standards. These rods have been successfully deployed in oilfields around the world, and their performance has earned high praise from a broad spectrum of clients. Vigor's commitment to quality has made it a trusted name in downhole drilling and completion tools. Interested parties are welcome to reach out for exceptional technical support and product solutions.
