Palaeothermicity of some European sedimentary basins derived from fluid inclusion and apatite fission track analyses

摘要: Oil-bearing fluids may be trapped in intracrystalline microcavities (fluid inclusions) created during crystal growth and microfracturing. Various minerals can trap hydrocarbons: silicates (quartz, feldspar), sulfates (anhydrite), carbonates (calcite, dolomite), halides (halite, fluorite) are the most common. These oil-bearing generally located sedimentary environments (sandstone, limestone, salt), although occurences metamorphic, hydrothermal igneous known. Oil inclusions ubiquitous petroleum reservoirs, one-phase (liquid or vapor), two-phase (vapor bubble a liquid phase) three-phase (vapor, solid phases). Their composition phase equilibrium related to PVTX conditions at time of trapping. Fluid used determine an accurate basin paleothermicity. Comparisons made between oil reservoir order evolution trapping present. The bio-and/or thermal degradation estimated different generations inclusions, observed one sample, distinguished.