塔河油田奥陶系油藏属于碳酸盐岩缝洞型块状油藏,高角度裂缝发育,生产开发过程中一直保持高速开发,老井自然产量稳产难度大,控制老井自然递减成为实现油田稳定的主要工作,自然递减率是采油厂油田管理水平的体现,也是完成全年产量任务的关键,通过对碳酸盐岩缝洞型油藏自然递减原因进行分因素分析,提出了对复杂碳酸盐岩油藏自然递减的控制办法,对碳酸盐岩油藏可持续发展提供了科学的管理依据。 Ordovician reservoirs in Tahe Oilfield belong to carbonate fractured-hole massive reservoirs with high-angle fractures. During the process of production and development, the Ordovician reservoir maintains high-speed development. It is difficult and difficult for the old wells to stabilize natural production, The main work of oil field stability, natural decline rate is the oil field management level of the oil factory reflects the completion of the annual output of the task is also the key to carbonate fractured cave reservoirs natural causes of sub-factor analysis of the complex Carbonate reservoir natural decline control measures for the sustainable development of carbonate reservoirs provide a scientific management basis.