[经] estimated original oil in place

gū jì de yuán yóu yuán shǐ chǔ liàng ㄍㄨ ㄐㄧˋ ㄉㄜ˙ ㄩㄢˊ ㄧㄡˊ ㄩㄢˊ ㄕˇ ㄔㄨˇ ㄌㄧㄤˋ