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

Claim 19:
20. A port sub comprising:
a housing;
a flow passage, defined within the housing;
a standard flow port extending through the housing, from the flow passage to the environment external to the housing, for effecting fluid communication between the flow passage and the environment external to the housing;
a control flow port extending through the housing, from the flow passage to the environment external to the housing, for effecting fluid communication between the flow passage and the environment external to the housing;
a standard flow port sealing configuration including a first end sealing surface and a second end sealing surface, wherein the second end sealing surface is disposed at an opposite end of the standard flow port sealing configuration relative to the first end sealing surface;
wherein:
the standard flow port sealing configuration is co-operable with a degradation-promoting agent such that:
degradation of the standard flow port sealing configuration is effected in response to emplacement of the degradation-promoting agent in a degradation-effective communication with the first end sealing surface; and
degradation of the standard flow port sealing configuration is effected in response to emplacement of the degradation-promoting agent in a degradation-effective communication with the second end sealing surface;

and
a control flow port sealing configuration;
wherein:
the standard flow port and the standard flow port sealing configuration co-operate to define a standard flow port flow controller, wherein the standard flow port flow controller is disposed in a closed configuration and transitionable from the closed configuration to an open configuration, wherein:
in the closed configuration, fluid communication, via the standard flow port, between the flow passage and the environment external to the housing, is sealed by the standard flow port sealing configuration; and
in the open configuration, there is an absence of sealing of fluid communication, via the standard flow port, between the flow passage and the environment external to the housing, such that fluid communication, via the standard flow port, is established between the flow passage and the environment external to the housing;

the control flow port and the control flow port sealing configuration co-operate to define a control flow port flow controller, wherein the control flow port flow controller is disposed in a closed configuration and is transitionable from the closed configuration to an open configuration, wherein:
in the closed configuration, fluid communication, via the control flow port, between the flow passage and the environment external to the housing, is sealed by the control flow port sealing configuration; and
in the open configuration, there is an absence of sealing of fluid communication, via the control flow port, between the flow passage and the environment external to the housing, such that fluid communication is established, via the control flow port, between the flow passage and the environment external to the housing;

the standard flow port flow controller and the control flow port flow controller are co-operatively configured for transitioning from a co-operating sealed configuration to a co-operating opening-effective configuration, wherein:
in the co-operating sealed configuration, the standard flow port flow controller is disposed in the closed configuration and the control flow port flow controller is disposed in the closed configuration; and
in the co-operating opening-effective configuration, the standard flow port flow controller is disposed in the closed configuration and the control flow port flow controller is disposed in the open configuration;

the standard flow port flow controller and the control flow port flow controller are co-operatively configured such that, while: (i) the port sub is emplaced within a wellbore, and (ii) the co-operating opening-effective configuration is established:
degradation-promoting agent is emplaceable within the flow passage in the degradation-effective communication with the standard flow port sealing configuration via the first end sealing surface and also via the second end sealing surface, such that a degradation-effective configuration is established, with effect that the degradation-effective communication with the first end sealing surface and the degradation-effective communication with the second end sealing surface co-operate for effecting degradation of the standard flow port sealing configuration;
the degradation-effective communication with the standard flow port sealing configuration, via the first end sealing surface, is established in the absence of communication via the environment external to the housing; and
the degradation-effective communication with the standard flow port sealing configuration, via the second end sealing surface, is established via the control flow port and the environment external to the housing.