Wireline tool cable head overload apparatus
This patent describes a cable head adapted to support a sonde in a well borehole. It comprises: an upper end assembly adapted for connection with a cable extending into a well borehole; a lower end assembly adapted for connection to a sonde to be supported by the cable in the well borehole; yieldable means joining the upper and lower assemblies together in a fixed but yieldable relationship wherein a controllable and variable load is imparted to the cable there above during movement and variations in load on the cable are maintained within specified limits; the yieldable means further including dead weight adjustable means notwithstanding variations in the dead weight of the load, and the yieldable means includes resilient means permitting movements within a desired range dependent on the adjustment thereof and bracketing a selected relative position of the upper and lower end assemblies; and an electrical contact.
- Assignee:
- Halliburton Logging Services, Inc., Houston, TX (USA)
- Patent Number(s):
- US 4928764; A
- Application Number:
- PPN: US 7-409897A
- OSTI ID:
- 6744605
- Resource Relation:
- Patent File Date: 20 Sep 1989
- Country of Publication:
- United States
- Language:
- English
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