what is the btu comparison of natural gas and  crude oil?

Crude oils have 18,300-19,500 BTU/lb and liquified natural gas (LNG)
22,300 BTU/lb. A more robust table appears below, along with web
citation.

CALORIFIC VALUE OF FULES
           Rough gross values in Btu per lb
        -------------------------------------
        Crude oils              18,300-19,500
        Gasolines                      20,500
        Kerosines                      19,800
        Benzole                        18,100
        Ethyl alcohol                  11,600
        Gas oils                       19,200
        Fuel oils (bunker)             18,300
        Coal (bituminous)       10,200-14,600
        LNG                            22,300
        LPG (butane)                   21,300
        -------------------------------------

http://www.eppo.go.th/ref/UNIT-OIL.html

Thank you for your question.

skermit-ga