| 摘要 |
A side entry sub is disclosed having a stripping passage between the lower end of the sub and a recess in the sub body. A stripping element is disposed in the stripping passage to sealingly strip a logging cable as it moves into or out of the pipe string attached to the sub. A cable slot is provided in the outer part of the body and extends from a side opening to an opening in the recess. Upper and lower sheave wheels are rotatably mounted near the side opening and the recess opening operably providing a rotatable change of direction of a logging cable from outside the sub to the interior of an attached pipe string. The rotatable change of direction by rotation of the logging cable via the sheave wheels minimizes frictional resistance when it is running into or out of the pipe string.
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