Piv nrog rau cov dej-raws li drilling kua, roj-raws li drilling kua muaj ntau yam zoo xws li kub tsis kam, ntsev thiab calcium intrusion tsis kam, wellbore stability, zoo lubrication, thiab tsawg puas rau roj thiab roj txheej. Nws yog ib qho tseem ceeb txhais tau tias rau cov dej kub hauv qhov tob tob, cov qhov dej siab siab, cov qhov dej kab rov tav thiab ntau yam kev tsim, thiab tseem tuaj yeem siv dav hauv cov dej tsis thaiv, cov dej ua tiav perforation, dej ua haujlwm thiab lub plawv tsav dej. Txawm li cas los xij, nws cov nqi npaj tau ntau dua li cov dej hauv cov dej drilling, thiab nws cov kev siv feem ntau muaj kev cuam tshuam loj rau thaj chaw ecological nyob ze ntawm qhov chaw zoo, thiab piv nrog kev siv cov dej-raws li drilling kua, ROP feem ntau yog. qis. Cov kev tsis txaus siab saum toj no txwv tsis pub muaj kev nrov nrov thiab kev siv roj-raws li cov kua dej drilling. Txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau ua kom muaj qhov drilling, nws muaj peev xwm ua kom cov drilling ceev, cov dej qis-hauv-roj emulsion drilling kua tau siv dav txij li nruab nrab -1970s. Txhawm rau tiv thaiv ib puag ncig ecological thiab ua tau raws li cov kev xav tau ntawm marine drilling, txij li thaum xyoo 1980s, kev siv cov dej tsis muaj tshuaj lom-hauv-roj emulsified drilling kua nrog ntxhia roj raws li cov roj hauv paus tau maj mam nce. Tam sim no, tag nrho cov roj-raws li drilling kua yog tsis tshua muaj siv, yog li dab tsi feem ntau yog xa mus rau feem ntau yog hais txog dej-hauv-roj emulsified drilling kua nrog roj av lossis cov roj ntxhia uas tsis muaj tshuaj lom (cov roj dawb) raws li theem txuas ntxiv.
