Hydrocarbon sealing capacity of paleosols, Wasatch Formation, Rifle, Colorado
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Hydrocarbon reservoirs require a seal to keep the hydrocarbons from migrating out of the reservoir. Therefore, recognition of seal rocks and determination of seal properties are extremely important for exploration. Seal rocks are commonly fine-grained shale and mudstone. Previous seal rock studies have mostly been limited to marine shales. Other fine-grained rocks that may provide seals for hydrocarbon deposits include paleosols. Two floodplain paleosol packages in the Eocene Wasatch Formation were sampled to determine how paleosol characteristics, clay matrix and quartz grain content, and ...