EXHIBIT 10.13 SECOND AMENDMENT TO THE COOPER CAMERON CORPORATION COMPENSATION DEFERRAL PLAN WHEREAS, COOPER CAMERON CORPORATION (the "COMPANY") has heretofore adopted the COOPER CAMERON CORPORATION COMPENSATION DEFERRAL PLAN (the "PLAN"); and WHEREAS, the Company desires to amend the Plan in certain respects; NOW, THEREFORE, the Plan shall be amended as follows; effective as of January 1, 1999: 1. Clause (ii) of the second sentence of Section 3.2 of the Plan shall be deleted and the following shall be substituted therefor: "(ii) on 50% of the Deferred Compensation credited during such calendar year pursuant to Section 2.3(a) multiplied by a fraction, the numerator of which is the number of days between the date the participant first elects to make a deferral pursuant to Section 2.3(a) in such calendar year and the end of such calendar year and the denominator of which is 365; and" 2. As amended hereby, the Plan is specifically ratified and reaffirmed. EXECUTED at Houston, Texas this ___ day of __________________, 2000. COOPER CAMERON CORPORATION By: ----------------------------------- Name: ------------------------------ Title: ------------------------------