
93
C
Combination Log
Collar: The connection or coupling on jointed pipe. It the strict sense, it is the
section with female × female connections.
Collar Lock: A prole that can be set by wire line in the space in an API-type
coupling.
Collar Log: A magnetic inection log, run on wire line that is principally
used to locate the depth of threaded pipe connections and other masses
ofmetal.
Collar Stop: A wire line set plug without a prole. It is set in a coupling and
grips with packer-like slips.
Collection System: A network of pipes, manholes, cleanouts, traps, siphons,
lift stations, and other structures used to collect all wastewa