A process for simultaneously hydrating and oligomerizing a hydrocarbon feed comprising mixed olefins, the process comprising the steps of: introducing the hydrocarbon feed in the presence of water into a fixed bed reactor under reaction conditions that are operable to hydrate the mixed olefins and oligomerize at least a portion of the mixed olefins; contacting the hydrocarbon feed with a catalyst within the fixed bed reactor, wherein the catalyst is of the type that hydrates the mixed olefins to form mixed alcohols and oligomerizes at least a portion of the mixed olefins into one or more oligomers to produce a first product stream that includes an organic phase and an aqueous phase; introducing the first product stream into a first separator which separates the organic phase from the aqueous phase; introducing the separated organic phase into a second separator which separates unreacted olefins from a final product stream which comprises the mixed alcohols and the one or more oligomers; introducing the separated aqueous phase into a third separator which separates an alcohol-water azeotrope component from water, wherein the mixed olefins comprise mixed butenes including 1-butene, 2-trans-butene, 2-cis-butene, and isobutene, and the mixed alcohols comprise mixed butanols, and wherein the second separator comprises a debutenizer, which removes unreacted butenes and recycles the unreacted butenes back to the fixed bed reactor, and the final product stream comprises mixed butanols and diisobutenes; and receiving the unreacted butenes from the second separator in an isomerization unit that is fluidly connected between the second separator and the fixed bed reactor, wherein the isomerization unit serves to convert 2-butenes in the unreacted butenes to 1-butenes prior to re-introduction of the unreacted butenes into the fixed bed reactor. introducing the hydrocarbon feed in the presence of water into a fixed bed reactor under reaction conditions that are operable to hydrate the mixed olefins and oligomerize at least a portion of the mixed olefins; contacting the hydrocarbon feed with a catalyst within the fixed bed reactor, wherein the catalyst is of the type that hydrates the mixed olefins to form mixed alcohols and oligomerizes at least a portion of the mixed olefins into one or more oligomers to produce a first product stream that includes an organic phase and an aqueous phase; introducing the first product stream into a first separator which separates the organic phase from the aqueous phase; introducing the separated organic phase into a second separator which separates unreacted olefins from a final product stream which comprises the mixed alcohols and the one or more oligomers; introducing the separated aqueous phase into a third separator which separates an alcohol-water azeotrope component from water, wherein the mixed olefins comprise mixed butenes including 1-butene, 2-trans-butene, 2-cis-butene, and isobutene, and the mixed alcohols comprise mixed butanols, and wherein the second separator comprises a debutenizer, which removes unreacted butenes and recycles the unreacted butenes back to the fixed bed reactor, and the final product stream comprises mixed butanols and diisobutenes; and receiving the unreacted butenes from the second separator in an isomerization unit that is fluidly connected between the second separator and the fixed bed reactor, wherein the isomerization unit serves to convert 2-butenes in the unreacted butenes to 1-butenes prior to re-introduction of the unreacted butenes into the fixed bed reactor.