Side entry clamp and packoff
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United States of America Patent
Stats
-
Apr 29, 1980
Grant Date -
N/A
app pub date -
Sep 13, 1976
filing date -
Sep 13, 1976
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus is provided for permitting a communication wireline to be suspended in a borehole along the outside of a drill stem for subsequent side entry therein and connection to a steering tool for the relaying of information from the steering tool to the surface of the borehole. The apparatus includes an apertured section of drill pipe having a self-contained sealing structure including a wireline clamp housed therein for securing and sealingly engaging the wireline therethrough and maintaining the sealed integrity of the drill stem. In this manner mud may be pumped under pressure through the drill stem to drive a drilling head while the wireline interconnects the steering tool and the borehole surface along the outside of the drill stem.
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