Top entry sub arrangement
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United States of America Patent
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Feb 8, 1994
Grant Date -
N/A
app pub date -
Feb 4, 1993
filing date -
Feb 4, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A top entry sub (ES) includes a tubular member (TM) with a main body section (8) and an enlarged external diameter upper end portion (11). A single passage (15) extends through the main body section (8) and terminates in a pair of spaced passages (14) and (14a) that extend through the enlarged external diameter end portion (11), which passages terminate in a common upper surface on the top entry sub (ES) for receiving a well string and providing an entry into the top entry sub for members such as coiled tubing, snubbing members and cable.
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