Chitoliro chapadera chamafuta chimagwiritsidwa ntchito pobowola zitsime zamafuta ndi gasi komanso kunyamula mafuta ndi gasi.Zimaphatikizapo chitoliro chobowola mafuta, chosungira mafuta, ndi chitoliro cha sucker.Mafutakubowola chitoliroamagwiritsidwa ntchito makamaka kulumikiza kolala yobowola ndi kubowola pang'ono ndikutumiza mphamvu yobowola.Chophimba chamafuta chimagwiritsidwa ntchito kuthandizira khoma la pachitsime pobowola komanso pobowola kuti chitsime chonsecho chizigwira bwino ntchito panthawi komanso pambuyo pobowola.Chitoliro choyamwa makamaka chimanyamula mafuta ndi gasi kuchokera pansi pa chitsime kupita pamwamba.

Chophimba chamafuta ndi njira yothandizira kuti chitsime chamafuta chizigwira ntchito.Chifukwa cha mikhalidwe yosiyana ya geological ndi zovuta za mphamvu yapansi, kuphatikizika kwa kugwedezeka, kukanikiza ndi kupsinjika kwa torsional pathupi la chitoliro kumayika patsogolo zofunikira zamtundu wa casing yokha.Chosungiracho chikawonongeka pazifukwa zina, chingayambitse kuchepa kwa chitsime chonse kapena zidutswa.

Malinga ndi mphamvu ya chitsulo chokha, chosungiracho chikhoza kugawidwa m'magulu osiyanasiyana achitsulo, omwe ndi J55, K55.N80, L80, C90, T95, P110, Q125.V150 ndi zina zotero.Zosiyanasiyana bwino zinthu ndi kuya ntchito zosiyanasiyana zitsulo makalasi.M'malo owononga, chosungiracho chimafunikanso kuti chisawonongeke.Kumene zinthu za geological zimakhala zovuta, casing imafunikanso kuti ikhale ndi anti-collapse performance.