By Steve Gelsi

U.S. energy stocks fell Tuesday in the face of a 200-point drop in the Dow Jones Industrial Average as well as expectations for a tough first-quarter earnings season.

Crude-oil prices provided another reason to sell energy stocks, as oil futures fell back below $50 a barrel on jitters about the economy and rising inventory levels.

Sector leader Exxon Mobil Corp. (XOM) dropped $1.58 to $68.47, while Chevron (CVX) was down $1.66 to $68.23. The two big-cap oil companies are components of the Dow Jones Industrial Average, which retreated 198 points, or 2.5%.

The Amex Oil Index fell 2.8% to 866.

The Amex Natural Gas Index fell 3.6% to 357. The Philadelphia Oil Service Index declined 3.2% to 130.

"Everyone knows first-quarter earnings will be soft," analysts at Houston-based research firm Tudor Pickering Holt said about the oil-services sector; the analysts have been tracking downward revisions across Wall Street in the past few weeks.

Evidence of poor performances in the oil business came with Russian oil giant Lukoil, which posted a fourth-quarter loss of $1.6 billion. Lukoil is 20% owned by ConocoPhillips (COP), which saw its shares fall nearly 4% to $39.65.

While J.P. Morgan analyst Michael LaMotte boosted his rating on oil refiner Sunoco Inc. (SUN) to neutral from underweight, he cut his first-quarter earnings target on the oil refiner to 56 cents a share from 60 cents a share on low margins in the heating oil business in March.

Looking past the first-quarter results, however, LaMotte sees the possibility of a boost for Sunoco and other refiners during the traditional ramp-up in the gasoline business.

Sunoco drew an upgrade to neutral from underweight, at J.P. Morgan, with LaMotte boosting his 2009 earnings estimate for the company to $3.15 to $2.98 a share and lifting his price target to $34 a share from $33 a share.

Sunoco's valuation suggests a minimal downside, with shares closing at $28.27 a share on Monday.

"Current price levels suggest a cheap call option on a potential increase in margins/volumes this summer," LaMotte said in a note to clients. "We continue to prefer Valero (VLO) because of its more flexible crude slate, higher yields of clean products, and meaningful Gulf Coast exposure."

Sunoco shares fell 15 cents to $28.13.

In the oil service sector, Baker Hughes Inc. (BHI) said the number of drilling rigs actively exploring for or developing oil or natural gas dropped by 440 to 2,313 in March from 2,753 in February. In the U.S., the rig count fell by 215 to 1,105. Baker Hughes shares retreated 4% to $29.10.

-By Steve Gelsi; 415-439-6400; AskNewswires@dowjones.com

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