In recent years, nitrogen gas -lift has been successfully used in backflow of fracture fluid, draining water and recovering gas, and dis...

• 氮气气举不仅成为常规油井排液的主要手段,而且在高凝油井的成功尝试,使辽河油田利用氮气气举工艺技术在特种油的开采方面拓展了新的途径。