Patent ID: 11939836
Assignee: ADVANCED UPSTREAM LTD.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 20:
21. The port sub as claimed in claim 20, wherein:
the standard flow port flow controller and the control flow port flow controller are co-operatively configured for transitioning from the co-operating opening-effective configuration to an open configuration, wherein, in the open configuration, the standard flow port configuration is disposed in the open configuration and the control flow port configuration is disposed in the open configuration, and
wherein the transitioning from the co-operating opening-effective configuration to the open configuration is effected by, at least, the degradation of the standard flow port sealing configuration by the co-operation between the degradation-effective communication with the first end sealing surface of the standard flow port sealing configuration and the degradation-effective communication with the second end sealing surface of the standard flow port sealing configuration.