The upstream energy giant faces some unpredictable challenges.

Occidental Petroleum’s conventional oilfields in the Permian basin of west Texas have been producing for decades.

Occidental Petroleum (OXY) closed at $40.35 in the latest trading session, marking a -0.39% move from the prior day. This change lagged the S&P 500's 0.58% gain on the day. Elsewhere, the Dow gained 0 ...

Chennai Petroleum Corporation Ltd., incorporated in the year 1965, is a Small Cap company (having a market cap of Rs 9,246.65 Crore) operating in Gas & Petroleum sector. Chennai Petroleum Corporation ...