Both the natural gases that are often recovered in association with oil and the petroleum gases that are produced as a by-product of the refining of mineral oil (ethane, propane and butane) have a high calorific value and are therefore used as domestic fuels.
Zombini irhasi zendalo ezithe zafunyanwa ehambisana ne-oyile nerhasi zepetroleum eziveliswe zilisolotya zomzi wokucokisa i-oyile esisimbiwa (ethane uhlobo oluthile lwegesi) ukuba nexabiso eliphakamileyo lwecalarofic zisetyenziselwe izibaso zasekhaya.