A working trap model for Weyburn field is that of a macroporous vuggy packstone reservoir lying downdip from a microporous intercrystalline mudstone seal. How much hydrocarbon column could a trap like this retain, especially since superficially the seal doesn't appear to be a seal at all. Instead, it consists of rocks with appreciable [[porosity]], local oil staining, local log-calculated water saturations less than 100%, and the capability of producing significant amounts of water on DST.
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A working trap model for Weyburn field is that of a macroporous vuggy packstone reservoir lying downdip from a microporous intercrystalline mudstone seal. How much [[hydrocarbon column]] could a trap like this retain, especially since superficially the seal doesn't appear to be a seal at all. Instead, it consists of rocks with appreciable [[porosity]], local oil staining, local log-calculated water saturations less than 100%, and the capability of producing significant amounts of water on DST.