X0202 4 2008-02-11 0 0000003982 Allis Chalmers Energy Inc. ALY 0001373190 Bulgheroni Alejandro Pedro 5075 WESTHEIMER, #890 HOUSTON TX 77056 1 0 0 0 Common Stock 2008-02-11 4 P 0 300 9.77 A 500300 I By Associated Petroleum Investors Ltd. Common Stock 2008-02-11 4 P 0 500 9.81 A 500800 I By Associated Petroleum Investors Ltd. Common Stock 2008-02-11 4 P 0 700 9.84 A 501500 I By Associated Petroleum Investors Ltd. Common Stock 2008-02-11 4 P 0 612 9.85 A 502112 I By Associated Petroleum Investors Ltd. Common Stock 2008-02-11 4 P 0 400 9.858 A 502512 I By Associated Petroleum Investors Ltd. Common Stock 2008-02-11 4 P 0 1581 9.86 A 504093 I By Associated Petroleum Investors Ltd. Common Stock 2008-02-11 4 P 0 4243 9.87 A 508336 I By Associated Petroleum Investors Ltd. Common Stock 2008-02-11 4 P 0 300 9.879 A 508636 I By Associated Petroleum Investors Ltd. Common Stock 2008-02-11 4 P 0 800 9.88 A 509436 I By Associated Petroleum Investors Ltd. Common Stock 2008-02-11 4 P 0 500 9.888 A 509936 I By Associated Petroleum Investors Ltd. Common Stock 2008-02-11 4 P 0 8300 9.89 A 518236 I By Associated Petroleum Investors Ltd. Common Stock 2008-02-11 4 P 0 41064 9.9 A 559300 I By Associated Petroleum Investors Ltd. Common Stock 2008-02-11 4 P 0 2096 10 A 561396 I By Associated Petroleum Investors Ltd. Common Stock 1000000 I By Global Oilfield Holdings Limited Common Stock 7000 D The Reporting Person is Chairman and President of each Associated Petroleum Investors Ltd. and Global Oilfield Holdings Limited. The Reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for the purposes of Section 16 or for any other purpose. /s/ Alejandro P. Bulgheroni 2008-02-13