Wellhead isolation tool and method of use thereof
Patent
·
OSTI ID:6669521
An apparatus is described for isolating a production tubing string in an oil well from the wellhead whereby pressures higher than the rated pressure of the wellhead may be applied to the producing formation. The apparatus has an outer housing with a telescoping inner mandrel and seals. The outer housing is adapted for connection to the wellhead, and the inner mandrel is capable of moving into the wellhead to make a fluidically sealed connection with the production tubing, thereby isolating the wellhead from the higher pressures being applied through the tubing into the formation. (11 claims)
- Assignee:
- Halliburton Co.
- Patent Number(s):
- US 3830304
- OSTI ID:
- 6669521
- Country of Publication:
- United States
- Language:
- English
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