Thaum xaiv cov khoom siv hauv cov yeeb nkab dej, nws yog qhov yuav tsum tau ua tib zoo xav txog qhov chaw ua haujlwm, qhov yuav tsum tau ua, thiab tus nqi -kev ua tau zoo. Rau cov dej zoo drilling dej dav dav, cov pa roj carbon steel laum cov kav dej yog qhov kev xaiv pheej yig dua; rau cov dej hauv dej nrog cov txheej txheem geological nyuaj lossis muaj cov xov xwm corrosive, alloy steel lossis stainless hlau laum kav dej yog tsim nyog. Tsis tas li ntawd, kev saib xyuas yuav tsum tau them rau qhov tsis xws li cov lus qhia tshwj xeeb, qhov ntev, thiab txoj kev sib txuas ntawm cov kav dej laum kom ntseeg tau tias muaj kev sib raug zoo nrog cov khoom siv drilling.
Nyob rau hauv luv luv, kev xaiv cov dej zoo laum yeeb nkab cov ntaub ntawv yog ib qho tseem ceeb heev rau kev ua hauj lwm drilling. Kev xaiv kom raug thiab siv cov khoom siv laum yeeb nkab tuaj yeem tsis tsuas yog txhim kho drilling efficiency thiab txo cov nqi tab sis kuj ua kom muaj kev nyab xeeb ntawm kev ua haujlwm. Yog li ntawd, thaum yuav cov kav dej zoo laum, nws raug nquahu kom xav txog tag nrho cov kev khiav hauj lwm ib puag ncig, kev ua haujlwm, thiab tus nqi -kev ua tau zoo, thiab xaiv cov khoom uas muaj kev ua tau zoo thiab tus nqi siab- ua tau zoo.