X0303 4 2011-02-23 1 0000003982 Allis Chalmers Energy Inc. ALY 0001373190 Bulgheroni Alejandro Pedro 5075 WESTHEIMER, #890 HOUSTON TX 77056 1 0 1 0 Common Stock 2011-02-23 4 D 0 35520 D 0 D Common Stock 2011-02-23 4 D 0 8435666 D 0 I By Associated Petroleum Investors Ltd. Common Stock 2011-02-23 4 D 0 2320000 D 0 I By Global Oilfield Holdings Limited These shares were disposed of pursuant to an Agreement and Plan of Merger among the Issuer, Seawell Limited and Wellco Sub Company, a wholly-owned subsidiary of Seawell Limited, dated August 12, 2010, as amended. The Reporting Person received 1.15 shares of Seawell Limited common stock for each share of Allis-Chalmers common stock owned. The Reporting Person is Chairman and President of each of 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/ Theodore F. Pound III through POA 2011-02-25