Occidental Profit Up 70 Pct  NEW YORK (Reuters) - Occidental Petroleum Corp. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=OXY.N target=/stocks/quickinfo/fullquote"&gt;OXY.N&lt;/A&gt;,  among the top U.S. oil and gas producers, on Thursday said  quarterly profit shot up 70 percent, spurred by the dramatic  rise in oil and gas prices in recent months.