Mu isi yo gukuramo peteroli, ikoranabuhanga ryo gucukura rihora rihinduka kugirango ryuzuye ibisabwa bigoye byingufu z'ubu. Kimwe mubice byingenzi byikoranabuhanga ni PDC itari ibara ryibanze (Polycrystalline Diamond Compact) gucukura bit. Byagenewe porogaramu yihariye, ibi bits bigira uruhare runini mugutezimbere imikorere yo gucukura, cyane cyane mubihe bya geologiya. Oya