30

                                                                    Exhibit 11.1

                           Castle Energy Corporation
                 Statement of Computation of Earnings Per Share
                (Dollars in thousands, except per share amounts)
                                  (Unaudited)



                                                                                Six Months Ended March 31,
                                                           ------------------------------------------------------------------
                                                                      1995                                  1994
                                                           ------------------------------         ---------------------------
                                                                               Fully                                 Fully
                                                              Primary         Diluted                Primary        Diluted
                                                              -------         -------                -------        -------
                                                                                                       
I.       Actual shares outstanding at September 30            7,627,646       7,627,646              7,722,646      7,722,646

         Stock issued during the period:
           Stock, net                                          (894,484)       (894,484)             2,307,550      2,307,550
           Options exercised                                      1,648           1,648                     83             83

II.      Weighted equivalent shares:
           Assumed exercise of options and warrants             143,839          28,058                565,710        224,935
           Assumed conversion of debenture                       38,450          38,450                500,000        500,000
                                                           ------------    ------------           ------------   ------------

III.     Weighted average shares and equivalent
           shares                                             6,917,099       6,801,318             11,095,989     10,755,214
                                                           ============    ============           ============   ============

IV.      Net income:
           Net income before adjustment                    $     14,120    $     14,120           $     15,082   $     15,082



           Assumed interest savings, net of tax, "as if"
           the convertible debenture had been exercised
           and debt had been retired utilizing proceeds
           of the exercise of options and warrants.                   6               6                    108            189
                                                           ------------    ------------           ------------   ------------

           Adjusted net income                             $     14,126    $     14,126           $     15,190   $     15,271
                                                           ============    ============           ============   ============

V.       Net income per share:                               $2.04           $2.08       (A)        $1.37           $1.42      (A)
                                                             =====           =====                  =====           =====         


        (A) Fully diluted earnings per share is not presented as it is
            antidilutive.

                                       1

 31

                                                                    Exhibit 11.1

                           Castle Energy Corporation
                 Statement of Computation of Earnings Per Share
                (Dollars in thousands, except per share amounts)
                                  (Unaudited)



                                                                                Three Months Ended March 31,
                                                           ------------------------------------------------------------------
                                                                    1995                                     1994
                                                           ----------------------------          ----------------------------
                                                                               Fully                                 Fully
                                                              Primary         Diluted               Primary         Diluted
                                                              -------         -------               -------         -------
                                                                                                      
I.       Actual shares outstanding at December 31             6,658,646       6,658,646             11,222,646     11,222,646

         Stock issued during the period:
           Stock, net
           Options exercised                                      3,333           3,333                    167            167

II.      Weighted equivalent shares:
           Assumed exercise of options and warrants              50,135          27,564                348,062        348,062
           Assumed conversion of debenture                                                             500,000        500,000
                                                           ------------    ------------           ------------   ------------


III.    Weighted average shares and equivalent
          shares                                              6,712,114       6,689,543             12,070,875     12,070,875
                                                           ============    ============           ============   ============

IV.      Net Income:
           Net Income before adjustment                    $         36    $         36           $      6,699   $      6,699
                                                           ============    ============           ============   ============


           Assumed interest savings, net of tax, "as if"
           the convertible debenture had been exercised
           and debt had been retired utilizing proceeds
           of the exercise of options and warrants.                                                        111            113
                                                           -------------   ------------           ------------   ------------

           Adjusted net income                             $          36   $         36         $        6,810   $      6,812
                                                           =============   ============         ==============   ============

V.         Net income per share:                              $.01            $.01       (A)         $.56           $.56       (A)
                                                              ====            ====                   ====           ====          


       (A) Fully diluted earnings per share is not presented as dilution is
           less than three percent or is antidilutive.

                                       2