请帮我润色这段话：The initial and equilibrium configurations of companion gas stripping crude oil are shown in Figure 2 When the CH4 content in the accompanying gas is 0 and 25 almost all of the dense oil laye

Figure 2 illustrates both the initial and equilibrium states of companion gas stripping crude oil. In the absence of CH4 in the accompanying gas, as well as when it is present at 25%, the majority of dense oil layer molecules on the quartz surface dissolve into the gas phase, while CO2 molecules separate the oil layer from the surface. With 50% CH4, the oil layer expands and disperses due to the influx of companion gas molecules. Some oil molecules dissolve individually in the gas phase, while most remain near the quartz surface. In the presence of pure CH4, the oil layer remains tightly adsorbed on the quartz surface, with only a small amount of outermost free oil separating from the dense adsorbed oil layer and diffusing into the gas phase. As seen in (b), the oil layer forms four density peaks near the quartz wall under natural conditions, with three adsorption layer regions and one free state region (the fourth density peak has a density close to n-heptane under natural conditions at 0.72 g/cm3). Upon gas injection, in the case of pure CO2, the peak of the oil layer density curve shifts to the free state region, indicating the majority of adsorbed oil has converted to the free state. However, with CH4-containing gas, the peak of the oil layer density remains in the adsorption state region, particularly with pure CH4 where the peak value of the adsorption layer only slightly changes. Despite some expansion of the oil layer with the addition of gas phase, it remains attached to the quartz surface