It is documented that China had its own oil wells already in 980 AD.Because

oil wells drilled in Yanchang County

northern Shaanxi Province

were recorded in"Peaceful Miscellanea"by Li Fang

etc.of the North Song Dynasty(the book was written in 980 AD).Oil wells in counties of(now called)Yanchang

Yanchuan and Yijun

etc.Shaanxi Province

were also written down in"The Central Annals of the Yuan Dynasty"by Bo Lanxi

etc.The recorded history of these oil wells is 300

235 years earlier respectively than that of oil and brine-bearing wells in Jiazhou region noted down then by Cao Xuequan in"Miscellanea of Central Sichuan".Furthermore

the publication of the book"Peaceful Miscellanea"is about 100 years earlier than that or"Mengxi Sketches and Notes"of Shen Kuo

thus the term of"petroleum"was not initiated by Shen Kuo.