摘要
孤东油田经过多年的高速开发、强注强采 ,地下矛盾十分突出。为探索特高含水期改善油田开发效果的途径 ,在深化油藏开发特点认识的基础上 ,应用精细油藏描述技术、数值模拟技术 ,以及开发测井和油藏工程方法 ,进行了剩余油分布规律研究、合理地层压力水平研究、扩大水驱波及体积途径分析、注采结构状况分析研究等。在降压强排试验的基础上 ,调整注采结构 ,使油田地层压力得到控制 ,注采结构得到了优化 ,控制了含水上升速度 ,油田开发趋势明显好转 ,强化了油田稳产基础 。
Obvious contradictions in Gudong oil field appeared due to many years of high rate recovery and intensive injection and production. On the purpose of improving development effect, such technologies as detailed reservoir description, reservoir simulation, production logging, reservoir engineering methods have been adopted to study the remaining oil's distribution, proper formation pressure level, enlarging swept volume and injection/production structure. The injection and production structure was adjusted based on pressure lowering and production-enhancing test. The formation pressure has been reasonably controlled and the injection/production structure was optimized. The water cut of this oilfield was also well controlled and development turned to a better trend thus enhanced the foundation of stable oil production. This is a new way for the development of a loose sand reservoir with heavy oil at its later high water cut period.
关键词
孤东油田
注采结构
特高含水
优化调整
油田注水
Gudong oilfield, injection/production structure, super high water cut, development effect
