Aumente a eficiência das suas operações em campos petrolíferos com o nosso acoplamento de haste de bombeio de 22 mm de alta qualidade. Projetado para durabilidade e confiabilidade, esta ferramenta de fundo de poço premium garante desempenho consistente em ambientes exigentes. Ideal para uso profissional, sua engenharia de precisão minimiza o desgaste e maximiza a vida útil. Confie na HENAN SUNJOY OIL MACHINE AND MATERIAL CO., LTD para soluções confiáveis que atendam a todas as necessidades da sua indústria.
The sucker rod coupling is a critical connecting component used to join two sucker rods, installed at both ends of the rod and connected via threaded engagement. It plays a key role in the pumping system by:
Couplings are typically fixed to the sucker rod body through interference fit or cold-upsetting process, with some designs being removable.
4. Selection Guidelines and Precautions
Compatibility Principle
The coupling must exactly match the rod diameter, thread type, and grade; mixing types may lead to premature failure.Corrosion Resistance
In H₂S-containing or high-salinity environments, use sulfide stress cracking (SSC)-resistant materials such as 35CrMoA with dehydrogenation treatment.Field Maintenance
- Inspect thread wear and deformation after each disassembly
- Use dedicated thread compound (e.g., API 5A3 compliant) for lubrication and sealing
- Avoid using pipe wrenches directly on the coupling body to prevent damage
Quality Control Points
- Dimensional tolerance (±0.1 mm)
- Thread pitch diameter consistency
- Uniformity of heat treatment (microstructure inspection required)
5. Suggested Supplementary Documentation
If you are building a comprehensive technical archive for downhole pumping equipment, consider collecting the following related components:
- Sucker rod body specifications (grade, length, weight)
- Polished rod and stuffing box interface standards
- Sucker rod centralizer placement strategy
- Sucker rod anti-parting device selection guide