Icwecwe elipeyintwe ngaphambili imathiriyeli ekrwada yicoil yentsimbi epeyintwe kwangaphambili esebenzisa intsimbi ekhandisiweyo okanye intsimbi yealuzinc njengesubstrate.Emva konyango lwangaphambili (ukususwa kwekhemikhali kunye noguqulo lweekhemikhali), umphezulu ogqunywe ngomaleko okanye iileya ezininzi zokugquma, ngokubhaka kunye nokunyanga, emva koko ube yimveliso egqityiweyo.
Iphepha lokuphahla elipeyintiweyo lineenzuzo zobunzima beyunithi yokukhanya, amandla aphezulu, ukusebenza kakuhle kwe-seismic, ukufakwa ngokukhawuleza, ukubonakala okuhle, njl njl. Yinto efanelekileyo yokwakha kunye necandelo.Isetyenziselwa ikakhulu kwizakhiwo zemvulophu, ii-slabs zomgangatho, iithayile zophahla, kwaye ingasetyenziselwa ezinye izakhiwo.