Only two oil equipment and services stocks are in the blue but their gains are enough to lift the whole sector.One of these is Petrofac, which has been awarded a 48-month as development in Abu Dhabi.The international oil and gas services provider's 50% owned joint venture, Petrofac Emirates, has received a letter of award from GASCO for the construction of the fourth natural gas liquid train at the Ruwais complex in Abu Dhabi.Portland Gas is the best performer in the sector.Autonomy leads software & computer services lower after the data search software specialist posted another rise in revenues but said gross profit margins eased. Top performing sectors so far todayAutomobiles & Parts 1,864.61 +1.27%Health Care Equipment & Services 2,512.87 +1.11%Oil Equipment Services & Distribution 12,138.54 +0.96%Fixed Line Telecommunications 1,603.17 +0.75%Real Estate 1,573.14 +0.64%Bottom performing sectors so far todayIndustrial Metals 3,997.75 -3.33%Software & Computer Services 453.47 -3.06%Electronic & Electrical Equipment 1,184.82 -1.61%Mining 14,041.77 -1.38%Technology Hardware & Equipment 266.42 -1.12%