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Izinjini zidlala indima ebalulekile ezinsizakalweni ze-oilfield, zisebenza njengendawo yamandla eshayela imishini ehlukahlukene esetshenziswa ekuhloleni, ukukhishwa, nokuthuthwa kukawoyela negesi. Lezi zinjini zenziwe ngqo ukuhlangabezana nezidingo zokusebenza ezifunayo zomboni kawoyela negesi, okuvame ukubandakanya ukusebenza ezimweni ezimbi kakhulu njengamazinga okushisa aphezulu, uthuli, nomswakama. Laphaya