An efficient way to remove traces of oil in oilfield effluent water is through the use of organoclay as a filtration medium. The organoclay samples were prepared from a combination of clay with varied amounts of quaternary ammonium chloride. The effluent water sample was obtained from an oilfield in Delta state. The effects of some parameters, such as ratio of clay to quaternary amine used in producing the various samples of organoclay and time of adsorption, on the efficiency of removal of oil from effluent water by the organoclay were studied. The total hydrocarbon content (THC), pH and turbidity of the effluent water before and after adsorption using each of the five (5) different samples of organoclays were monitored and there were considerable differences when compared with the use of an ordinary clay. The total hydrocarbon content of the effluent water used in this study was 133.35ppm and one of the organoclay samples, of ratio 100g/50ml (m/v) was able to reduce it to 8.96ppm after the adsorption process in a duration of 0.235hrs. Hence, the organoclay has oil removing capabilities due to it’s the ion exchange or polar property.