June 30, 2021

Marcellus is the major producing formation in US. Marcellus SW area produces liquids rich gas, while Marcellus NE production is dry.  This chart shows total dry gas production.

Marcellus development started in 2005-2006 and has grown from under 3 Bcf/d in 2010 to 22.5 Bcf/d in 2020. Marcellus dry gas production is expected to peak at 25.8 in 2027 before beginning a slow decline to 22.3 Bcf/d by 2040.

Marcellus Total Rig Count

The Marcellus rig count averaged about 60 rigs over 2018 and the first half of 2019 before declining to about 30 rigs in 2020.

Marcellus Map