Split casing block-off for gas or water in oil drilling
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United States of America Patent
Stats
-
Feb 26, 1985
Issued Date -
N/A
app pub date -
Apr 27, 1983
filing date -
Jul 19, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for sealing the wall of a bore hole comprises forming a liner of resilient sheet material into a substantially cylindrical or scroll configuration having a diameter smaller than that of the hole, inserting the liner into the hole, allowing the liner to expand to substantially the diameter of the hole, and pressing the liner against the wall of the bore hole. Apparatus for performing the method comprises an elongated member having a first end insertable into the bore hole, means associated therewith for supporting a liner within the hole, and rotary means for pressing the liner into contact with the wall of the hole. A liner in accordance with the present invention comprises a resilient sheet pressed against the wall of the bore hole, and a layer of mud and cement interposed between the sheet and the wall.
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