Sub-surface release plug system
AssigneeWeatherford Netherlands, B.V.
InventorMarcel BUDDE
Life of this patent
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Abstract
A subsurface release plug system includes a plug mandrel body and a plug. The plug mandrel body includes a bore, a flow port fluidly connected to the bore, and a sleeve adjustable from a first position to a second position. The sleeve prevents fluid flow through the flow port when in the first position and allows fluid flow through the flow port when in the second position. The plug is releasably connected to the plug mandrel body, wherein the plug is configured to be released from the plug mandrel body by fluid flowing through the flow port.
Claims25
A plug, comprising:
- a plug body having a body bore;
- and
- a collar located within the body bore, the collar including a collar bore and a protrusion extending into the collar bore, the protrusion configured to engage a longitudinal channel of an insert, wherein the insert is configured to be at least partially disposed in the body bore.
A plug mandrel subassembly comprising:
- a plug mandrel body including:
- a bore;
- a flow port fluidly connected to the bore;
- an adjustable sleeve positionable to prevent fluid from flowing through the flow port;
- a first portion of a channel;
- an insert releasably connected to the plug mandrel body and having a second portion of the channel.
A method of operating a subsurface release plug system, comprising:
- releasing a first plug from a plug mandrel body having a first longitudinal channel, wherein the first plug includes a first protrusion disposed in the first longitudinal channel;
- displacing the first plug relative to the plug mandrel body, wherein the first protrusion travels within the first longitudinal channel;
- and
- connecting the first plug with a first insert releasably coupled to the plug mandrel body, wherein the first protrusion is disposed in a second longitudinal channel of the first insert.
Dependencies are inferred from the claim text.