Retarding deposition of {HEAD ~ paraffin} from crude oil or {TAIL ~ natural gas} with alkaline liquids 
from
Retarding deposition of { HEAD ~ paraffin } from crude oil or { TAIL ~ natural gas } with alkaline liquids
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH