Wellhead bore isolation tool
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 2, 1999
Grant Date -
N/A
app pub date -
Jan 22, 1998
filing date -
Jan 22, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A wellhead isolation tool is mounted to a wellhead to isolate the bore of the wellhead from a treating fluid being injected. The isolation tool has a housing which has an upper section and a lower section. A valve is connected between the upper and lower sections. A mandrel is slidably carried in the housing and moves from an upper position spaced entirely in the housing to a lower position extending through the bore of the wellhead. In the lower position, the upper end of the mandrel is below the valve. This allows the valve to be closed and the upper section removed. The treating line is attached to the upper end of the valve. The nozzle has annular recesses formed in it to enhance turbulence to reduce erosion.
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Cited Art Landscape
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