ATP Commences Production From Garden Banks 186

ATP Oil & Gas has commenced production from its Garden Banks 186 #1 well located in the Gulf of Mexico. The well was a successful engineering achievement with 15,660' of extended reach drilling to penetrate a reservoir at a 5,100' depth. In addition, ATP already has commenced drilling a second well at Ship Shoal 358.

At Garden Banks 186, ATP is the operator with an 80% working interest. The remaining interest is held by NI Energy Venture, Inc., an affiliated company of Nissho Iwai Corporation.

"The success of this extended reach well is a tribute to the technical capabilities of our outstanding team. ATP continues to effectively execute its business plan of developing proved undeveloped reserves," stated T. Paul Bulmahn, Chairman and President of ATP.