POSC Specifications: Epicentre Version 3.0 Logical Data Model

FLOAT_COLLAR

(Rules) (Express)

A collar inserted one or two joints above the bottom of the casing string, and which contains a check valve that permits fluid to pass downward through the casing but prevents it from passing upward. The float collar prevents the drilling mud from entering the casing while it is being lowered, thus allowing the casing to float during its descent, and decreasing the load upon the derrick. The float collar also prevents the back flow of cement during the cementing operation.


Local rules:

Supertype path(s):

Entity consolidated into table WELLBORE_DEVICE.

Referenced in Diagrams:


Generated on Tue Jul 10 15:42:01 2001
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