Backup and system
AssigneeBaker Hughes Oilfield Operations LLC
InventorsLarry Urban, Marcus Avant
Life of this patent
Estimating the term…
Abstract
A backup includes an anchor portion, an operable portion extending from the tip of the anchor portion, and an S section having a curvilinear line therein and where a substantially constant thickness of material from the line to an inside surface of the S section and a substantially nonconstant thickness of material from the curvilinear line toward an outside surface. A backup system including a backup, a gauge ring engageable with the anchor portion, the gauge ring including a contact surface with a back angle configured to engage the S section when the backup is set. A seal system including a mandrel, a backup, disposed on the mandrel, a gauge ring disposed on the mandrel and configured to interact with the backup; and a seal element disposed on the mandrel.
Claims11
A backup comprising:
- an anchor portion, having a thickness of material from a centerline of the anchor portion toward an outside surface of the anchor portion that is equal to a thickness of material from the centerline of the anchor portion to an inside surface of the anchor portion, the centerline having a first end point at a base of the anchor portion and a second end point at a tip of the anchor portion;
- an operable portion extending from the tip of the anchor portion, the operable portion comprising:
- a wedge section, the wedge section having a thickness of material from a centerline of the wedge section toward an outside surface of the wedge section that is equal to a thickness of material from the centerline of the wedge section to an inside surface of the wedge section, the centerline having a first end point at a tip of the wedge section and a second end point at a base of the wedge section;
- and
- an S section defined by a thickness of material that is substantially constant from a curvilinear line beginning at the second end point of the tip of the anchor portion and extending to the first end point of the base of the wedge section toward an inside surface of the S section and a thickness of material from the curvilinear line toward an outside surface of the S section that is substantially nonconstant and thicker than the substantially constant thickness.
Dependencies are inferred from the claim text.