Causes of Packer seal failure
The article identifies the most common factors which can play a role in premature failures of packer seals:
1. Installation procedures
- Storage damage: ageing (heat, sunlight or radiation); distortion (poor support, heavy loads).
- Friction damage: non-uniform rolling or twisting, or abrasion by un-lubricated sliding.
- Cutting by sharp edges: Inadequate taper on corners, sharp edges on ports, seal grooves etc.
- Lack of lubrication.
- Presence of dirt.
- Use of incorrect installation tools.
2. Operational factors
- Inadequate duty . . .