Oil stocks are under pressure amid low crude prices, as global economic worries continue. Afren is among the fallers, despite moving strongly into profit in the first half as higher prices outweighed lower production.Encore Oil is bucking the trend though after 'superb' latest drilling results from the Cladhan appraisal well located in UK Northern North Sea block 210/29a.FTSE 100 constituent Reckitt Benckiser gives the household goods sector a lift. The company, which is most famous for making everyday items such has Finish dishwasher tablets and Vanish stain remover, has received approval from the US Food and Drug Administration (FDA) to manufacture and market a new form of Suboxone, a drug used to treat heroin addicts' withdrawal symptoms.Top performing sectors so far todayTechnology Hardware & Equipment 526.72 +2.60%Household Goods & Home Construction 6,010.85 +1.44%Industrial Engineering 5,055.37 +1.03%Mobile Telecommunications 3,560.83 +0.77%Industrial Metals & Mining 5,676.48 +0.67%Bottom performing sectors so far todayLife Insurance 3,738.54 -1.35%Oil & Gas Producers 6,705.42 -1.17%Fixed Line Telecommunications 1,836.06 -1.05%Aerospace and Defence 2,903.71 -1.01%Support Services 3,690.89 -1.00%