Composite cement retainer
AssigneeW. Lynn Frazier
InventorW. Lynn Frazier
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Abstract
A downhole plug is provided. In one or more embodiments, the plug includes a body and an element system disposed about the body. The plug further includes a first and second back-up ring member having two or more tapered wedges. The tapered wedges are at least partially separated by two or more converging grooves. First and second cones are disposed adjacent the first and second back-up ring members.
Claims25
A downhole plug, comprising:
- a body;
- an element system disposed about the body;
- a first and second back-up ring member having two or more tapered wedges, wherein the tapered wedges are at least partially separated by two or more converging grooves;
- and
- a first and second cone disposed adjacent the first and second back-up ring members.
A downhole plug, comprising:
- a body;
- an element system disposed about a first end of the body;
- a first and second back-up ring member having two or more tapered wedges, wherein the tapered wedges are at least partially separated by two or more converging grooves;
- a first and second cone disposed adjacent the first and second back-up ring members;
- a collet valve assembly disposed about a second end of the body, the collet valve assembly comprising:
- a housing having a first and second shoulder disposed on an inner surface thereof and one or more ports formed therethrough;
- a collet disposed within the housing, the collet having a body and two or more fingers disposed thereon, the fingers having a first end with an enlarge outer diameter adapted to engage the first shoulder of the housing, wherein the body includes a section having an enlarged outer diameter adapted to engage the second shoulder of the housing.
A composite cement retainer, comprising:
- a housing having a first and second shoulder disposed on an inner surface thereof and one or more ports formed therethrough;
- and
- a collet disposed within the housing, the collet having a body and two or more fingers disposed thereon, the fingers having a first end with an enlarge outer diameter adapted to engage the first shoulder of the housing, wherein the body includes a section having an enlarged outer diameter adapted to engage the second shoulder of the housing.
The retainer of claim 22, wherein the first and second shoulders are disposed within the first section of the housing.
The retainer of claim 23, wherein the second section comprises a third shoulder disposed on an inner surface thereof, the third shoulder adapted to abut a second end of the enlarged outer diameter section of the collet body.
Dependencies are inferred from the claim text.