Gucukura ni bwo buryo bwa mbere bwo gutunganya ubushyuhe bwa peteroli. Muri rusange, ubushyuhe bwo gutunganya ubushyuhe buri hejuru ni hafi 1,300°C. Bugamije gukuraho imyanda nk'amazi, ibintu bihindagurika, sulfur na hydrogen muri peteroli, no kumenya imiterere n'imiterere ya fiziki y'ibikoresho bitandukanye bya karuboni. Ubu buryo bushobora kugabanya ingano ya hydrogen mu bicuruzwa byo kuvugurura peteroli no kunoza urwego rwa graphitization, bityo bikanoza imbaraga zayo, ubucucike, amashanyarazi atwara ndetse no kurwanya oxidation.