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US 10,472,927 B2Granted
Downhole drop plugs, downhole valves, frac tools, and related methods of use
AssigneeVanguard Completions Ltd.
InventorsJozeph Robert Marcin, Branko Calic
Life of this patent
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Abstract
Downhole drop plugs, frac sleeves, and downhole plug-operated valves. The drop plugs may incorporate a ring part and a rod part. The valves may incorporate a bypass to accommodate material that gets stuck in the valve on flowback. The valves may incorporate a compound seat that passes a first ball of a first size and seats a second ball of the first size. Locking seats, dissolvable balls, and dissolvable mandrels are illustrated and discussed as well.
Claims16
A downhole valve comprising:
- an outer housing defining an interior bore;
- an inner mandrel mounted in the interior bore, the inner mandrel defining an interior passageway between an uphole end and a downhole end of the inner mandrel, the inner mandrel defining an uphole facing drop plug seat surface encircling the interior passageway;
- and
- in which the inner mandrel comprises dissolvable material that is protected from wellbore fluids and fluids within the interior passageway;
- and
- in which the inner mandrel is actuatable by a drop plug to expose the dissolvable material to one or more of the wellbore fluids and the fluids within the interior passageway.
3 more elements
Dependencies are inferred from the claim text.