Foam injections in porous medium were performed throughout various objectives from Enhanced Oil Recovery (EOR) in 1970s to In Situ Environmental Remediation (ISER) in the mid-1980s. Several foam models were developed with the will to reproduce laboratory experiments and then, field applications related to different working conditions. Nevertheless, compressible effects on the gas phase remain sparsely investigated on both experimentation interpretations and foam models. In this paper, we present a compressible interpretation of a 1D core foam injection experiment, showing that gas compressibility has a pronounced effect despite a relative high working pressure. Based on experimental pressure values along the core, a semi-analytical Local Equilibrium (LE) foam model using a Mobility Factor FM was set and variables behaviour along the core were investigated. Then, foam parameters (fmmob, fmdry and epdry) were determined, and the laboratory experiment was successfully simulated using this compressible solver. Numerical simulations were then performed using the incompressible and compressible solvers. ∇P=f(fg)|Ut=constant\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\nabla P = f(f_g) \vert _{U_t = constant}$$\end{document} extrapolated curves for both solvers were plotted and compared to highlight the role of compressibility. Moreover, coupled effects of foam compressibility and foam rheology were discussed.Read less <