Drill pipe bridge plug
Patent
·
OSTI ID:5572168
This patent describes a retrievable bridge plug apparatus for sealing a bore in a pipe string. It comprises a packer mandrel assembly having a longitudinal mandrel bore defined therein with a barrier blocking the mandrel bore, the packer mandrel assembly having a bypass port disposed radially through a wall thereof and communicated with the mandrel bore below the barrier; packer means, disposed on the packer mandrel assembly, for sealing between the packer mandrel assembly and the bore in the pipe string upon engagement of the packer means with an internal upset of the pipe string and subsequent application of upward force to the packer mandrel assembly; a bypass sleeve slidably disposed about the packer mandrel assembly and movable longitudinally relative to the packer mandrel assembly between an open position wherein the bypass port is open and a closed position wherein the bypass port is closed, the sleeve being fixed against rotational movement relative to the packer mandrel assembly.
- Assignee:
- Halliburton Co., Duncan, OK (United States)
- Patent Number(s):
- A; US 5029643
- Application Number:
- PPN: US 7-533307
- OSTI ID:
- 5572168
- Country of Publication:
- United States
- Language:
- English
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