Oil-field services supplier Halliburton ( HAL) announced late Thursday an 11.5% revenue rise from the year-ago quarter boosted by its Energy Services Group. For the second quarter of 2006 Halliburton earned $591 million, or 55 cents a share, compared with the year-ago income of $392 million or 38 cents a share. Excluding items, the Houston-based company earned 48 cents a share compared with 37 cents a share last year. On that basis, Thomson First Call analysts' estimates were for 49 cents a share. Halliburton reported a top line of $5.55 billion, up from $4.97 billion in the second quarter of 2005, on strong performance from its Energy Services Group. The gain was offset in part by a 3% drop in revenue from its Kellogg Brown & Root unit, attributable to decreased military support activities in Iraq, compared with the second quarter of 2005. Halliburton CEO Dave Lesar said that the company remains "committed to a full and complete separation of KBR from Halliburton in the near term through an initial public offering and/or a tax-free spin-off to our shareholders." Shares of the company gained 30 cents to $32.98 in recent after-hours trade, after closing the regular session off 4.3%.