Wellhead apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Nov 12, 1985
Grant Date -
N/A
app pub date -
Mar 8, 1984
filing date -
Mar 8, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
There are disclosed several alternate embodiments of wellhead apparatus of the type in which hydraulic fluid may be transmitted to and/or from a subsurface safety valve or other hydraulically operable device within the well through an annular space formed between the production tubing.
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