E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/40
E21B 29/06 (2006.01) E21B 33/00 (2006.01) E21B 33/14 (2006.01) E21B 41/00 (2006.01)
Patent
CA 1267836
Abstract A device for easily permitting effecting an opening in a well casing having a grouting wall therearound comprises: a tubular fitting having a circular transverse cross-section and having a first end and a second end, the first end configured to matingly engage the outer surface of the well casing, the length of said tubular fitting between the first and second ends thereof being substantially equal to the thickness of the grouting wall, a closure over the second end, and a coil spring attached to the tubular fitting for urging the first end of the tubular fitting against the outer surface of the well casing and for holding the tubular fitting in posi- tion in the casing. A method of providing a well casing to which access through surrounding grouting can be easily effected comprises the steps of positioning a well casing in the earth with an open clearance space between the outer surface of the well casing and the surrounding earth extending downwardly from the surface, positioning and holding a tubular fitting against the casing with one end of the fitting matingly engaging the surface of the casing and an opposite closed end being adjacent the surface of the surrounding earth, filling the clearance space with grouting, and permitting the grouting to harden.
539996
Meadows Bernard Allen
Sim & Mcburney
LandOfFree
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