Composite frac plug
AssigneeExacta-Frac Energy Services, Inc.
InventorAHMED MOHAMED SAEED
Life of this patent
Estimating the term…
Abstract
A composite frac plug has an elastomeric gripper assembly in place of an up-hole set of slips, permitting the composite frac plug to be shorter and lighter and more rapidly drilled out after fracking is completed.
Claims21
A composite frac plug, comprising an elastomeric gripper assembly mounted to a composite mandrel having a central passage, the elastomeric gripper assembly having an insert groove in an outer periphery thereof with a plurality of circumferentially spaced-apart inserts in the insert groove that respectively bite and grip a casing of a cased wellbore when the composite frac plug is shifted from a run-in condition to a set condition.
A composite frac plug, comprising:
- a composite mandrel with a central passage, the composite mandrel further having an up-hole end and a downhole end with a mandrel hub on the up-hole end an end sub securely affixed to the downhole end;
- an elastomeric gripper assembly mounted to the mandrel, the elastomeric gripper assembly having an insert groove with a plurality of circumferentially spaced-apart inserts that bite and grip a casing of a cased wellbore when the composite frac plug is in a set condition;
- a main sealing element downhole of the elastomeric gripper assembly;
- a slip hub having a slip cone downhole of the main sealing element;
- and
- a slip assembly downhole of the slip hub, the slip assembly comprising a plurality of slips adapted to slide up the slip cone to bite and grip the casing of the cased wellbore when the composite frac plug is shifted from a run-in condition to the set condition.
A composite frac plug, comprising:
- a composite mandrel with a central passage, the composite mandrel further having an up-hole end and a downhole end, with a mandrel hub on the up-hole end and an end sub affixed to the downhole end;
- a gauge load ring adjacent the mandrel hub and affixed to the composite mandrel by gauge load ring preset retainer pins;
- an elastomeric gripper assembly mounted to the mandrel, the elastomeric gripper assembly having an insert groove with a plurality of circumferentially spaced-apart inserts that bite and grip a casing of a cased wellbore when the composite frac plug is in a set condition;
- a main sealing element downhole of the elastomeric gripper assembly that provides a high pressure seal with a casing of a cased well when the composite frac plug is in the set condition;
- a slip hub with a slip cone downhole of the main sealing element;
- and
- a slip assembly downhole of the slip hub, the slip assembly comprising a plurality of slips adapted to be pushed up the slip cone by the end sub and to bite and grip the casing of the cased wellbore when the composite frac plug is shifted from a run-in condition to the set condition.
Dependencies are inferred from the claim text.