PRESS RELEASE–STAVANGER, Norway & HOUSTON–Aug. 23, 2004–Halliburton (NYSE:HAL – News) announced today at the 2004 Offshore Northern Seas Conference (ONS) that ChevronTexaco (NYSE:CVX – News) has expanded its relationship with the company for drilling operations in North America. Halliburton was selected as vendor of choice for ChevronTexaco's WellDECC (Well Design & Execution Collaboration Center).