Guide shoe Definition
1. a short, heavy, cylindrical section of steel filled with concrete and rounded at the bottom, which is placed at the end of the casing string. it prevents the casing from snagging on irregularities in the borehole as it is lowered. a passage through the center of the shoe allow drilling fluid to pass up into the casing while it is being lowered and allows cement to pass out during cementing operations. also called casing shoe.
2. a device, similar to a casing shoe, placed at the end of other tubular goods.
Related Oil & Gas Terms
Float collar
A special coupling device inserted one or two joints above the bottom of the casing string that contains a check valve to permit fluid to pass downward but not upward through the casing. the float collar prevents drilling mud from entering the casing while it is being lowered, allowing the casing to float during its...
Cementing
1. the application of a liquid slurry of cement and water to various points inside or outside the casing. 2. to prepare and pump cement into place in a wellbore. cementing operations may be undertaken to seal the annulus after a casing string has been run, to seal a lost circulation zone, to set a...
Wiper plug
A rubber-bodied, plastic- or aluminum-cored device used to separate cement and drilling fluid as they are being pumped down the inside of the casing during cementing operations. a wiper plug also removes drilling mud that adheres to the inside of the casing....
Tubular goods
Any kind of pipe. oilfield tubular goods include tubing, casing, drill pipe, and line pipe. also called tubulars....
Cement squeeze
A remedial cementing operation designed to force cement into leak paths in wellbore tubulars. the required squeeze pressure is achieved by carefully controlling pump pressure. squeeze cementing operations may be performed to repair poor primary cement jobs, isolate perforations or repair damaged casing or liner....
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