OCTGinonyanya kushandiswa kuchera mafuta uye gasi tsime uye mafuta uye gasi kutakura.Inosanganisira pombi yekuchera mafuta, casing, kupomba tubing.Mafuta ekuchera pombi anonyanya kushandiswa kubatanidza chibooreso collar uye bhiti uye kupfuudza simba rekuchera.Oiri casing inonyanya kushandiswa kuchera uye kupedzisa kweparutivi rwerutsigiro kuitira kuve nechokwadi chekushanda kwakajairika kwematsime mukuitisa uye kupedzwa kwekuchera.Iyo yekupomba tubing matsime pazasi pemafuta uye gasi kutapurirana pasi.

Oiri Casing ndiyo nzira yehupenyu kuchengetedza kumhanya zvakanaka.Nekuda kwemamiriro akasiyana e geological, pasi pevhu kushushikana mamiriro etension uye kumanikidzana, kukotama, uye zvakasanganiswa mhedzisiro yekushushikana kushushikana kunobata pachubhu, izvo zvakaisa pamberi pepamusoro zvinodiwa pamhando yecasing pachayo.Kana iyo casing ichinge yakuvadzwa nekuda kwechimwe chikonzero, inogona kutungamira mukugadzirwa kwematsime, kana kutoputswa.

Zvinoenderana nesimba resimbi, casing inogona kukamurwa kuita giredhi rakasiyana resimbi, kureva, J55, K55, N80, L80, C90, iyo T95, P110, Q125, V150.Zvichingoenda zvakadaro.Zvakanaka mamiriro, kudzika kwakasiyana kwegiredhi resimbi kwakasiyanawo.Inodawo iyo casing munzvimbo dzinoita ngura ine corrosion resistance.Casing ne-anti-collapsing performance mumamiriro ezvinhu akaoma e geological.