Lithology of the Chang-8 oil reservoirs is mainly fine-medium lithic feldspathicsandstone and feldspathic detritus sandstone.
长8油层组储层岩性以细—中粒岩屑长石、长石岩屑砂岩为主。
2
The reservoirs of the Yanchang formation almost are fine feldspathicsandstone, feldspathic debris sandstone, rock fragment feldspathicsandstone, and little quartzose sandstone.
延长组储集岩主要为细粒的长石砂岩、长石岩屑砂岩、岩屑长石砂岩等，还有少量的石英砂岩。
3
Suide Soil and Water Conservation Experimental Station of YRCC conducted tests and study on probing and using the construction method of feldspathicsandstone as dam building material in 1997.