The Gulf Coast is home to three of the most prolific and important shale plays in the US Lower 48: the Eagle Ford, Haynesville, and Barnett. Once a predominantly gas-focused region, the Gulf Coast has gained prominence for tight oil through the rise of the Eagle Ford Shale, which garners more capital than any other onshore Lower 48 play. Despite the collapse in commodity prices, some areas in the Gulf Coast continue to offer strong economics due to the region's close proximity to hubs, established infrastructure, and limited regulation. Operators in both the Eagle Ford and Haynesville have further enhanced economics through high-grading acreage positions, deploying longer laterals, and utilising enhanced completions. This Upstream Summary report provides an overview of the key upstream issues and trends across the Gulf Coast region. It offers a detailed description of reserves, production, economics, infrastructure and fiscal terms for the Gulf Coast region and individual basins.