Controlled weak point for wireline cable
Patent
·
OSTI ID:5058995
This patent describes a controllable break device for use in interconnection with wireline cable and cable head. It comprises: an upper sleeve section that is secured to the cable while leading a length of cable axially therethrough; a lower sleeve section slidingly engaged with a portion of the upper sleeve section and receiving the length of cable axially therethrough for being secured to the cable head; an inner tube having upper and lower ends extending axially within the upper and lower sleeve sections, mandrel means receiving the inner tube therethrough and having upper and lower ends extending between the upper and lower sleeve section; first shear pin means securing the mandrel means lower end to the lower sleeve section; second shear pin means securing the inner tube upper end to the upper sleeve section; and limit sleeve means disposed coaxial to the mandrel means and extending between the upper and lower sleeve sections, and subsequent parting of the second shear pin means upon release of cable tension to allow separation of the upper and lower sleeve sections.
- Assignee:
- Halliburton Co., Duncan, OK (United States)
- Patent Number(s):
- US 5109921; A
- Application Number:
- PPN: US 7-693986
- OSTI ID:
- 5058995
- Country of Publication:
- United States
- Language:
- English
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