Latching tool for retrieving wellbore devices
This patent describes a latching tool for latching onto a head member connected to a wellbore device and wherein the head member includes a means forming a transverse surface thereon. It comprises: elongated body means including means for connecting the latching tool to a tubing string insertable in the wellbore for disposition of the latching tool at the lower end of the tubing string; a guide surface on the body means for engaging the head member for movement of the head member into a bore formed by the body means; at least one pivotally mounted latching dog disposed on the body means and movable between a retracted position out of engagement with the head member to a position for engagement with the head member for retrieval of the device from the wellbore; and means for holding the at least one latching dog in a retracted position. The means for holding being engageable by the head member for movement with the head member.
- Assignee:
- Atlantic Richfield Co., Los Angeles, CA
- Patent Number(s):
- US 4883120; A
- Application Number:
- PPN: US 7-298391--A
- OSTI ID:
- 6890315
- Country of Publication:
- United States
- Language:
- English
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