Retrievable straddle packer
Patent
·
OSTI ID:5923563
This patent describes a retrievable straddle packer for use in wells which intersect formations of the earth and contain fluid in the well bore. The retrievable straddle packer used to isolate a portion of the well bore so that a portion of the formations of the earth intersected by the well bore may be contacted by treating fluid pumped through the retrievable straddle packer. The retrievable straddle packer consists of: an upper hydraulic slip assembly for preventing movement of the retrievable straddle packer in one direction in the well bore upon actuation; an upper packer assembly connected to the upper hydraulic slip assembly for sealing a portion of the well bore from another; a bypass assembly located below the upper packer assembly; a lower packer assembly located below the bypass assembly for sealing a portion of the well bore from another; a lower mechanical slip assembly located below the bypass assembly for preventing movement of the retrievable straddle packer in another direction in the well bore upon actuation; and a drag block assembly.
- Assignee:
- Halliburton Co., Duncan, OK
- Patent Number(s):
- US 4567944
- OSTI ID:
- 5923563
- Country of Publication:
- United States
- Language:
- English
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