Apparatus and method for plugging voids in a ground stratum
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United States of America Patent
Stats
-
Mar 4, 1980
Grant Date -
N/A
app pub date -
Jan 16, 1978
filing date -
Jan 16, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus and method of filling voids in a ground stratum in the vicinity of a well bore are enclosed. The apparatus is a self-contained device and, for example, it can be placed in the well bore in the vicinity of the voids to be plugged by dropping the apparatus down a drill string. Once in place it will automatically respond to the well pressure to provide the required plugging. To accomplish this the apparatus includes precursors of polymers such as precursors of polyurethanes, epoxy type polymers, polyesters or other polymers which are released from the apparatus and flow into the voids.
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