M'munda wachitoliro cha mafuta ndi gasis, kugwiritsa ntchito mipope yowotcherera yozungulira kukuchulukirachulukira.Zomwe zimadziwikanso kuti chitoliro cha gasi, chitoliro cha ma saw, ndi chitoliro chamafuta ndi gasi, mapaipi osunthikawa amapangidwa pogwiritsa ntchito njira zowotcherera zapadera zomwe zimapereka zabwino zambiri pakunyamula mafuta, gasi, ndi madzi ena.Mu blog iyi, tiwona kusinthasintha kwa mipope yowotcherera yozungulira komanso chifukwa chake ndi chisankho choyamba pamapulojekiti ambiri opangira mapaipi.