1
 
                                                                    EXHIBIT 11.1
 
                           BURLINGTON RESOURCES INC.
 
                         EARNINGS PER SHARE COMPUTATION
 


                                                      YEAR ENDED DECEMBER 31,
                                    ------------------------------------------------------------
                                           1994                 1993                 1992
                                    ------------------   ------------------   ------------------
                                    EARNINGS   SHARES    EARNINGS   SHARES    EARNINGS   SHARES
                                    --------   -------   --------   -------   --------   -------
                                              (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
                                                                       
Primary earnings per common share:
  Net earnings available for
     common stock and weighted
     average common shares
     outstanding..................  $154,246   128,406   $256,312   129,746   $257,828   130,757
  Stock options assumed exercised-
     net..........................        --       628         --     1,036         --     1,126
                                    --------   -------   --------   -------   --------   -------
  Total net earnings and primary
     common shares................  $154,246   129,034   $256,312   130,782   $257,828   131,883
                                    ========   =======   ========   =======   ========   =======
  Primary earnings per common
     share........................  $   1.20             $   1.96             $   1.95
                                    ========             ========             ========   
Fully diluted earnings per common
  share:
  Net earnings available for
     common stock and weighted
     average common shares
     outstanding..................  $154,246   128,406   $256,312   129,746   $257,828   130,757
  Stock options assumed exercised-
     net..........................        --       628         --     1,036         --     1,126
                                    --------   -------   --------   -------   --------   -------
  Total net earnings and fully
     diluted common shares........  $154,246   129,034   $256,312   130,782   $257,828   131,883
                                    ========   =======   ========   =======   ========   =======
  Fully diluted earnings per
     common share.................  $   1.20             $   1.96             $   1.95
                                    ========             ========             ========