1
                                                                      EXHIBIT 12

                       SHELL OIL COMPANY AND SUBSIDIARIES

               COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES
                             (MILLIONS OF DOLLARS)



                                            Three Month
                                            Period Ended
                                              March 31                Years Ended December 31          
                                              --------        -----------------------------------------
                                                1994          1993     1992     1991     1990      1989
                                                ----          ----     ----     ----     ----      ----
                                                                                
Income before provisions for income                                                 
   taxes and including amounts                                                      
   applicable to unconsolidated                                                     
   subsidiaries   . . . . . . . . . . .         $292        $  923     $476     $ 47    $1,550    $2,067                            
Add:                                                                                
   Interest and discount amortization                                               
      on indebtedness   . . . . . . . .           44           213      268      297       371       401                  
   Portion of rentals representative                                                
      of interest(1)  . . . . . . . . .           31           113      114      119       107       119
   Amortization of interest 
      capitalized . . . . . . . . . . .            9            40       44       35        32        32
                                                ----        ------     ----     ----    ------    ------       
Income as adjusted  . . . . . . . . . .         $376        $1,289     $902     $498    $2,060    $2,619
                                                ====        ======     ====     ====    ======    ======
Fixed charges:                                                                      
   Interest and discount amortization                                               
      on indebtedness   . . . . . . . .         $ 44        $  213     $268     $297    $  371    $  401              
   Portion of rentals representative                                                
      of interest(1)  . . . . . . . . .           31           113      114      119       107       119         
   Capitalized interest   . . . . . . .            2             2        -        -         -        21
                                                ----        ------     ----     ----    ------    ------             
Total fixed charges . . . . . . . . . .         $ 77        $  328     $382     $416    $  478    $  541
                                                ====        ======     ====     ====    ======    ======            
Ratio of earnings to fixed charges  . .          4.9           3.9      2.4      1.2       4.3       4.8
                                                ====        ======     ====     ====    ======    ======
                                                                                    
     
_______________
(1)  Calculated as one-third of rental expense.





                                       12