Cementing plug
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 17, 1987
Grant Date -
N/A
app pub date -
Nov 25, 1985
filing date -
Nov 25, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A wellbore plug having a wiper disposed in inverted position which, in one embodiment, reinforces a conventionally disposed wiper of the plug. A plug wiper is provided which has a conventional cone-shaped portion and an opposing reinforcing portion, cone-shaped or otherwise. A plug wiper is provided which has no threads for mating with other parts of the plug, but which has a hollow recess for emplacing the wiper on a plug shaft.
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