Halliburton (NYSE: HAL) is a US-based oilfield services corporation with international operations in more than 70 countries. It has close to 300 subsidiaries, affiliates, branches, brands and divisions worldwide.

It is based at 5 Houston Center in Downtown Houston, Texas, in the United States. U.S. office locations are also in Anchorage, Alaska; Bakersfield, California; Denver, Colorado; Lafayette, Louisiana; and Oklahoma City, Oklahoma. Halliburton recently opened a second headquarters in Dubai, in the United Arab Emirates, in March 2007, where Chairman and CEO David J. Lesar will work and reside, “to Focus [the] Company’s Eastern Hemisphere Growth.” Corporate offices will remain in Houston and the company will remain incorporated in the United States. The company will consider Houston and Dubai as dual headquarters. Halliburton plans to move its headquarters to another site in Houston by 2012.

Halliburton’s major business segment is the Energy Services Group (ESG). ESG provides technical products and services for oil and gas exploration and production.

Halliburton’s former subsidiary, KBR, is a major construction company of refineries, oil fields, pipelines, and chemical plants. Halliburton announced on April 5, 2007 that it had finally broken ties with KBR, which had been its contracting, engineering and construction unit as a part of the company for 44 years.