【经】 estimated original oil in place
estimate; account; appraise; compute; figure; gauge; reckon
【化】 estimation
【经】 assess; assessment; computation; estimate; estimate price; estimates
gauge; reckon; reckoning; take the gauge of
base oil; crude oil
【化】 crude oil; crude petroleum; mother oil
【经】 base oil; crude; crude oil; petroleum; raw crude; raw oil
【经】 initial reserves; primary reserves