?why the wellheads in a off-shore platform must not are locate in the center

why the wellheads in a off-shore platform must not are locate in the center ? which standard mentioned specificly this point

Jaziel, The wellheads are usually located near the edge of the platform that is most easily approached by the drilling/workover rigs that must access the wells. Easy access to the WH's is the reason for their location.

[QUOTE=gunnarhole;290039]Jaziel, The wellheads are usually located near the edge of the platform that is most easily approached by the drilling/workover rigs that must access the wells. Easy access to the WH's is the reason for their location.[/QUOTE]

gunnarhole thanks a lot