Brine is produced along with the natural gas and is stored in the big tanks you see beside the well head, A truck has to come at regular intervals to collect it and send it to a disposal well.
What we had here is an event that “never happens” so not much is done to insulate stuff for anything more than the normal temperatures.
Back in 1983, we had about a 30 day period that it never got above freezing. Pipes froze in the ground but I don’t remember that much else going wrong.

What??? We lived in Richardson in 1983. There was never 30 days below freezing. Where in Texas was that? Panhandle, maybe?