The nitrogen injection pilot in Yanling oil field is for EOR of carbonate reservoir with bottom aquifer in high water cut stage under the cooperation with TOTAL French Oil Company.

• 翎油田注氮井组试验是一项与TOTAL法国石油公司合作开展的针对碳酸盐岩底水油藏注水开发后期提高采收率的现场试验。