OCTGisetyenziselwa ikakhulu ukomba oyile nerhasi kunye nokuthuthwa kweoyile negesi.Iquka umbhobho wokugaya ioli, i-casing, i-tubing yokumpompa.Imibhobho yokugaya i-oyile isetyenziselwa ukudibanisa i-collar ye-drill kunye ne-bit kwaye idlulise amandla okugaya.I-oyile ye-oyile isetyenziselwa ukugaya kunye nokugqitywa kwe-sidewall yenkxaso ukwenzela ukuba kuqinisekiswe ukusebenza okuqhelekileyo kwamaqula ekuqhubeni nasekugqityweni kwenkqubo yokugaya.Imibhobho yokumpompa iqulathe emazantsi eoli kunye nokuhanjiswa kwerhasi emhlabeni.

I-Oil Casing yindlela yokuphila yokugcina ukuhamba kakuhle.Ngenxa yeemeko ezahlukeneyo zejoloji, imeko yoxinzelelo lwangaphantsi komhlaba yoxinzelelo kunye noxinzelelo, ukugoba, kunye neziphumo ezidityanisiweyo zoxinzelelo lwe-torsional olusebenza kumbhobho, obeke phambili iimfuno eziphezulu kumgangatho we-casing ngokwayo.Xa i-casing yonakalisiwe ngenxa yesizathu esithile, kunokukhokelela ekuvelisweni kwamaqula, okanye ukuchithwa.

Ngokwamandla entsimbi, i-casing inokohlulwa ibe yimigangatho eyahlukeneyo yentsimbi, oko kukuthi, J55, K55, N80, L80, C90, T95, P110, Q125, V150.Kwaye nangokunjalo.Iimeko kakuhle, ubunzulu obuhlukeneyo bomgangatho wentsimbi bukwahlukile.Ikwafuna i-casing kwindawo ezonakalisayo ezinokumelana nomhlwa.I-Casing ene-anti-collapsing performance kwiimeko ezinzima ze-geological.