NEW YORK (TheStreet) -- Whiting Petroleum (WLL) - Get Report stock is gaining by 5.96% to $22.95 on heavy trading volume on Wednesday afternoon, as oil prices gained after U.S. crude inventories fell more than expected last week.

WTI crude for September delivery is up by 1.26% to $48.73 per barrel, while Brent crude for September delivery is up by 0.34% to $53.48 per barrel this afternoon, according to a CNBC.com index.

Oil prices jumped on reports that U.S. crude oil stocks fell by 4.2 million barrels last week, according to data from the U.S. Energy Information Administration, Reuters reports.

Analysts had estimated stockpiles would decrease by only 184,000 barrels.

U.S. gasoline demand averaged 9.51 million barrels per day in the past four weeks, a 6.2% year-over-year increase, Reuters added.

Additionally, Whiting Petroleum will announce its 2015 second quarter earnings results today, after the market close.

Analysts estimate that earnings per share and revenue will be lower for the second quarter of this year, compared with the same period last year.

Whiting Petroleum has been forecast to post flat earnings on revenue of $676.62 million for the second quarter of 2015. The company reported earnings of $1.40 per share on revenue of $835.62 million for the second quarter of 2014.

Separately, TheStreet Ratings team rates WHITING PETROLEUM CORP as a Hold with a ratings score of C-. TheStreet Ratings Team has this to say about their recommendation:

"We rate WHITING PETROLEUM CORP (WLL) a HOLD. The primary factors that have impacted our rating are mixed some indicating strength, some showing weaknesses, with little evidence to justify the expectation of either a positive or negative performance for this stock relative to most other stocks. The company's strengths can be seen in multiple areas, such as its largely solid financial position with reasonable debt levels by most measures and expanding profit margins. However, as a counter to these strengths, we also find weaknesses including feeble growth in the company's earnings per share, deteriorating net income and disappointing return on equity."

Highlights from the analysis by TheStreet Ratings Team goes as follows:

  • The debt-to-equity ratio is somewhat low, currently at 0.77, and is less than that of the industry average, implying that there has been a relatively successful effort in the management of debt levels. Despite the fact that WLL's debt-to-equity ratio is low, the quick ratio, which is currently 0.69, displays a potential problem in covering short-term cash needs.
  • Despite the weak revenue results, WLL has outperformed against the industry average of 38.8%. Since the same quarter one year prior, revenues fell by 27.9%. Weakness in the company's revenue seems to have hurt the bottom line, decreasing earnings per share.
  • The gross profit margin for WHITING PETROLEUM CORP is rather high; currently it is at 59.91%. Despite the high profit margin, it has decreased significantly from the same period last year. Despite the mixed results of the gross profit margin, WLL's net profit margin of -20.18% significantly underperformed when compared to the industry average.
  • The company, on the basis of change in net income from the same quarter one year ago, has significantly underperformed when compared to that of the S&P 500 and the Oil, Gas & Consumable Fuels industry. The net income has significantly decreased by 197.3% when compared to the same quarter one year ago, falling from $109.07 million to -$106.11 million.
  • Return on equity has greatly decreased when compared to its ROE from the same quarter one year prior. This is a signal of major weakness within the corporation. Compared to other companies in the Oil, Gas & Consumable Fuels industry and the overall market, WHITING PETROLEUM CORP's return on equity significantly trails that of both the industry average and the S&P 500.
  • You can view the full analysis from the report here: WLL Ratings Report