Wall Street analysts expect Halliburton (HAL) to post quarterly earnings of $0.50 per share in its upcoming report, which indicates a year-over-year decline of 31.5$5.39 billion, down 5.3% from the year-ago quarter.The current level reflects a downward revision of 2.6% in the consensus EPS estimate for the quarter over the past 30 days. This demonstrates how the analysts covering the stock have collectively reappraised their initial projections over this period.Prior to a comp ...