Tool assembly with collet and shiftable valve and process for directing fluid flow in a wellbore
AssigneeAdvanced Completions Asset Corporation
InventorsJianjun Wang, John Sobolewski
Life of this patent
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Abstract
Various embodiments of a tool assembly for completion of wellbores and processes of using the tool assemblies are provided. In various example embodiments a tethered receptacle in receipt of a plug member is releasably coupled to a collet. The tool assembly comprises one or more shiftable valves. In a process for controlling fluid flow in a wellbore string, the collet is released from the receptacle. Engagement of the collet with a shiftable valve causes the valve to shift from a port closed to a port open position, and to plug the central bore of a wellbore string with the plug member.
Claims20
A downhole assembly for directing and controlling fluid flow in a wellbore string and a reservoir formation surrounding the wellbore string, the assembly comprising:
- a tubular wellbore string having a central bore therethrough;
- a shiftable side-ported tubular valve interconnecting first and second portions of the wellbore string, comprising at least one side port and being shiftable from a port closed position where fluid flow through the at least one side port is blocked to a port open position where fluid flow through the at least one side port is allowed, the side-ported tubular valve having at least one inwardly biased protuberance;
- and
- an actuation member disposed within the central bore, the actuation member comprising:
- a receptacle tethered to a line deployment device;
- a plug member disposed within the receptacle;
- and
- a collet releasably coupled to the receptacle by a releasable coupling, the collet having at least one outwardly biased protuberance for correspondingly engaging with the at least one inwardly biased protuberance of the tubular valve, the plug member being engageable with the collet,
- wherein, upon release of the collet from the receptacle, the collet and the plug member while engaging one another are moveable downhole by application of a downhole directed fluid flow in the central bore, the collet being moved downhole to engage with the tubular valve through the corresponding protuberances and to cause the tubular valve to shift from the port closed position to the port open position, and the plug member being moved downhole to plug the central bore downstream of the at least one side port, and to thereby direct fluid flow through the at least one side port to a portion of the reservoir formation surrounding the wellbore string.
A process for controlling fluid flow in a wellbore string, the process comprising:
- installing a wellbore string having a central bore therethrough and comprising a side-ported tubular valve interconnecting two successive portions of the string, the tubular valve being shiftable from a port closed position to a port open position with at least one opened side port, and having at least one inwardly biased protuberance;
- deploying an actuation member directly uphole from the tubular valve in the central bore, the actuation member comprising a tethered receptacle, a plug member disposed within the receptacle, and a collet that is coupled to the receptacle with a releasable coupling and has at least one outwardly biased protuberance for correspondingly engaging with the at least one inwardly biased protuberance of the tubular valve and the plug member being engageable with the collet;
- releasing the collet from the receptacle;
- and
- applying a controlled fluid flow in the central bore to:
- engage the plug member with the collet and move the collet and plug member downhole for engaging the tubular valve through the corresponding protuberances and causing the tubular valve to shift from the port closed position to the port open position, and
- to plug the central bore with the plug member downstream of the port open position thereby directing fluid flow radially through at least one opened side port to a portion of the reservoir formation surrounding the tubular valve.
Dependencies are inferred from the claim text.