California-based Occidental currently produces from the Mukhaizna field in Oman.

The start-up of production in Bahrain and increased output from its development in Oman helped increase fourth-quarter sales volume by nearly 5% from the previous year, according to a Reuters report.

In January, Occidental announced during its fourth-quarter financial report, that overall 2009 oil output rose 7% from 2008, and the company expects 2010 output to grow by 5% to 8%.

Occidental's