Seal system for wellhead isolation tool diffuser
Patent
·
OSTI ID:6358911
A seal system for a wellhead isolation tool diffuser utilizes elastomeric cup-shaped seals installed on the exterior of the diffuser, which is inserted into the production tubing at the wellhead. After insertion of the diffuser, the production tubing is pressurized, and the seals are set against the interior of the production tubing by the pressure in the well effecting a tight seal. This eliminates the necessity to kill the well by pumping a fluid, typically mud or water, into the well until sufficient hydrostatic pressure is obtained to overcome the pressure of the formation and prevent the blowing out of fluids from the well. 13 claims.
- Assignee:
- Halliburton Co.
- Patent Number(s):
- US 4315543
- OSTI ID:
- 6358911
- Country of Publication:
- United States
- Language:
- English
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