Chophimba cha chitsime chamafuta chomwe chimatengedwa ndi mtundu waukulu wotsegulira, chimapangidwa ndi bala la waya wosapanga dzimbiri ndikuwotchedwa.
The mankhwala umalimbana chionetsero cha zida downhole komanso pamwamba ndithu yosalala kupanga ndi kukulitsa kupanga mkombero wa mafuta, gasi ndi zitsime madzi ndi vgravel pade kulamulira mapangidwe mchenga.Zida zake zowongolera mchenga zomwe zimagwiritsidwa ntchito zimakhala ndi malo otsogola kwambiri pamakampani opangira mafuta, njira yabwino yopitira kutentha kosagwira moyo wautali, yodalirika komanso yotsika mtengo.