Aker Solutions ASA: Fourth quarter and preliminary annual results 2011. Aker Solutions reported an 18 percent increase in revenues and a solid operating result in the fourth quarter of 2011, reflecting strong market conditions and high activity in the oil and gas industry. Revenues in the fourth quarter of 2011 amounted to NOK 11 600 million, compared with NOK 9 794 million in the same period one year ago. Earnings before interest, tax, depreciation and amortisation continuing operations (EBITDA) rose 29.6 percent to NOK 1 047 million (NOK 808 million)…