A meter run is the manufactured pipe assembly that holds a flow-measurement primary element—most often an orifice plate—plus the taps, fittings, and upstream/downstream lengths required by AGA and API practice. It is the measurement section, not the whole gas plant.

In the Permian, meter runs sit at well pads, tank batteries, and midstream interconnects where allocation or custody transfer depends on a known beta ratio, tap type, and pipe ID. A run that is too short, out of round, or built from the wrong tap configuration shows up later as an audit problem, not as an obvious leak.

Redhead Services supplies orifice meter runs built to AGA practice for oil and gas measurement. They are often paired with wellhead compression and production piping on the same pad.