What Does Casing Point (CP) Mean?
Casing point in the trenchless industry can be defined as the point at which a drilled bore has reached the required contract depth, is tested and logged. It is also the point at which the casing is set or the casing shoe rests. At this point, the drilling process ceases and recommendation is sought regarding completion or discontinuation of the well.
Trenchlesspedia Explains Casing Point (CP)
At the pre-determined depth or the casing point the drilling of a borehole ceases and decisions are made regarding completing or abandoning the well. If the bore has to be completed, casing of the recommended size is inserted and cemented in place. To design a drilling fluid program, establishing correct casing points is very important. The casing point is either pre-determined or is selected on-site depending on geological observations based on geotechnical investigations.
The optimum casing location or depth of casing shoe varies depending on the company but is mainly governed by fracture pressure, pore pressure and lithology.