X0202 3 2005-02-02 0 0000003982 Allis Chalmers Energy Inc. ALY 0001317824 Bryan David Keith 5075 WESTHEIMER, SUITE 890 HOUSTON TX 77056 0 1 0 0 President & COO of Subsidiary Common Stock 12000 D Option to purchase Common Stock 2.75 2003-12-16 2013-12-15 Common Stock 30000 D Option to purchase Common Stock 3.86 2005-02-02 2015-02-01 Common Stock 20000 D This option is exercisable (a) immediately with respect to 10,000 shares, (b) on December 16, 2005 with respect to 10,000 shares, and (c) on December 16, 2006 with respect to 10,000 shares. This option is exercisable (a) immediatley with respect to 6,667, (b) on February 2, 2006 with respect to 6,667 shares, and (c) on February 2, 2007 with respect to 6,666 shares. David Bryan 2005-02-10