1.Rock Drilling Eccentric Overburden Casing System yog niaj hnub no txoj kev nyiam rau drilling hauv av nyuaj, piv txwv li, qhov twg muaj pob zeb los yog xoob formations.Eccentric casing drilling system yog qhov kev daws teeb meem zoo tshaj plaws vim tias nws qhov kev txawj ntse reaming tis me ntsis yog rov qab tau tuaj yeem siv rau ntawm lub qhov tom ntej.Qhov no yog tshwj xeeb yog tsim rau cov qhov ntiav ntiav, zoo li feem ntau cov ntaub ntawv nyob rau hauv dej zoo drilling, geothermal qhov dej, thiab ntiav micro-piling ua hauj lwm.EDS yog qhov zoo tagnrho rau qhov luv luv hauv kev sib sau ua ke overburden.