CO, reforming of CH4 in the presence of O-2 in the feed has been investigated in a fixed bed reactor containing a Co-Ni catalyst. The reforming rate increased with O-2 partial pressure before leveling out at O-2:CH4 = 1 at temperature greater than 823 K. Although CO production decreased with O-2 addition, H, formation initially rose to a maximum before a slow decline. An expression relating the optimum O-2 partial pressure for H, production as a function of temperature was obtained as, P(O2,)max = 1.008 x 10(-3)e(8420IT). The H-2:CO product ratio increased from 0.9 for pure CO2 reforming and peaked at 1.73 as O-2 partial pressure increased to an equimolar level in the feed. The increased reaction temperature resulted in lower H2:CO due to increased CO2 reforming kinetics. The complete consumption of O-2 in the final product stream means that the oxidative CO2 reforming of CH4 may be used to generate nearly ideal syngas composition for Fischer Tropsch synthesis if feed CO2:CH4 is unity. In particular, the overall heat demand for the reforming reaction could be reduced (or become exothermic) for a judicious combination of CO2/CH4/O-2. The postreaction analysis revealed that even mild O-2 dosing leads to negligible carbon deposition. Thus, this form of reactor operation is energetically attractive and provided efficient carbon utilization.