Invention Grant
- Patent Title: Packer element retaining system
- Patent Title (中): 封隔器元件保持系统
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Application No.: US11531584Application Date: 2006-09-13
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Publication No.: US07373973B2Publication Date: 2008-05-20
- Inventor: Donald Smith , Donny Winslow , Mike Sutton , Tracy Martin
- Applicant: Donald Smith , Donny Winslow , Mike Sutton , Tracy Martin
- Applicant Address: US OK Duncan
- Assignee: Halliburton Energy Services, Inc.
- Current Assignee: Halliburton Energy Services, Inc.
- Current Assignee Address: US OK Duncan
- Agency: Conley Rose, P.C.
- Agent John W. Wustenberg
- Main IPC: E21B33/12
- IPC: E21B33/12

Abstract:
A bridge plug having a segmented backup shoe, and at least one split cone extrusion limiter, the extrusion limiter comprising a two part conical retainer positioned between packer elements and the segmented backup shoe to block packer element extrusion though spaces between backup shoe segments. In one embodiment, two split cone extrusion limiters are used together and positioned so that each split cone extrusion limiter covers gaps in the other extrusion limiter and together the two split cone extrusion limiters block packer element extrusion though gaps between backup shoe segments regardless of their orientation relative to the segmented backup shoe. In one embodiment, a solid retaining ring is positioned between a split retaining cone extrusion limiter and a packer element and resists extrusion of packer elements into spaces in the split cone extrusion limiter or limiters.
Public/Granted literature
- US20080060821A1 PACKER ELEMENT RETAINING SYSTEM Public/Granted day:2008-03-13
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