In water flooding reservoirs. after entering high water cut period, residual recoverable reserves is the important basis ol reservoir management.

在注水开发油藏中，当油藏达到高含水期时，确定剩余可采储量是油藏经营管理决策的重要依据。

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This paper analyzes current situation of Petro China and points out that 70% of PetroChina's oil production still comes from old fields where considerable residual recoverable reserves still exist.

通过对中国石油所面临的形势进行分析，指出目前中国石油产量的70%仍然来自老油田，其剩余可采储量仍相当可观。

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