DOW JONES NEWSWIRES 
 

Weatherford International Ltd. (WFT) has agreed to acquire the oilfield unit of BP PLC's Russian joint venture in a stock deal valued at $490 million.

Oil-services company Weatherford will exchange 24.3 million shares for the business, which has operating bases in critical reserves including Western Siberia and the Volga-Urals region. The unit's revenues exceeded $650 million in 2008, Weatherford said.

Weatherford and other oil-services companies have been looking for growth outside the U.S. amid a steep drop in demand.

The joint venture, TNK-BP Ltd., has been undergoing a sweeping overhaul of its structure and corporate governance, as well as a management shake-up after a long-running and bitter dispute. It is Russia's third-largest oil producer.

Weatherford's shares recently were up 3.7% at $20.70 as oil prices continue to climb. The stock, which closed at $20.13 on Thursday, are down 53% in the past year, though they have nearly doubled so far this year.

-By Tess Stynes, Dow Jones Newswires; 201-938-2473; tess.stynes@dowjones.com