PBR
PBR (Polished Bore Receptacle) also known as Seal Bore is designed to accept the seal assembly. PBRs have varied applications in liner top, permanent packer or completion string for landing a production tubing seal assembly or tie back string. This design provides the benefit of achieving containment of flow within the tubing without any leak and allowing tubing movement due to thermal expansion.
PBR assembly works as an expansion joint when extreme tubing movements are expected and can also be used as separation tool, facilitating removal of production tubing. Length of PBR depends of application requirement. PBRs allowing even 30 ft stroke are available. PBRs are manufactured of high quality material with tight tolerance and are polished before running seal assembly in the receptacle.