Sofia Rodriguez,Bob L. Herd Department of Petroleum Engineering, Texas Tech University
Modern unconventional wells increasingly rely on gas lift compression, representing ~30% of initial artificial lift systems in the Midland Basin and ~40% in the Delaware Basin by 2024. Permian produced gas is often liquid-rich, containing higher propane and butane concentrations and specific gravities typically ranging from 0.72–0.79 (and occasionally up to ~0.97), forcing compressors to operate near phase boundaries. Temperature changes during staged compression can cause liquid dropout, contributing to downtime. Multi-year field data shows 53% of shutdowns result from process upsets and gas conditions rather than mechanical failure. Elevated discharge pressures and cold ambient temperatures further increase hydrate formation risk, making phase behavior the primary driver of compressor instability.