ABSTRACT
A successful technique is being used to evaluate sandstone reservoirs for hydrocarbons. The technique consists of crossplotting the shear wave travel time and the neutron porosity. The crossplot will produce a hydrocarbon indicator based upon the relationship between the travel time and the neutron porosity. The sandstone reservoirs that are hydrocarbon productive will exhibit a greater shear wave travel time than would be predicted from the neutron porosity. Those sandstone reservoirs that are non-productive exhibit a smaller shear wave travel time than would be predicted from the neutron porosity. The technique can be applied in the cased hole as well as the open hole logging environment.
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1993. Society of Petrophysicists & Well Log Analysts
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