袁庆峰,朱丽莉,陆会民,郑宪宝
YUAN Qingfeng,ZHU Lili,LU Huimin,ZHENG Xianbao

• 1:大庆油田有限责任公司勘探开发研究院

摘要(Abstract)：

随着地质认识深化,特高含水期油田开发特征不断变化,剩余油减少,且变得更加零散和复杂。通过综合分析认识到:剩余油主要存在于水驱波及不到的储层部位;水驱波及到但水驱倍数低的储层部位,剩余油主要存在于水驱波及不到孔隙中的微观剩余部位;水驱波及到且水驱倍数很高的储层部位驱油效率已经很高了。因此特高含水期油田提高采收率的主攻方向仍以提高水驱波及体积为主。即使特高含水后期改为化学驱的油田,也还有一定的储层存在波及不到的剩余油,必须采取提高波及体积的技术来提高油田采收率。
With the deepening of the geological understandings, the development characteristics are changing continuously for the oilfields in the ultra-high-watercut period, the remained oil is decreasing, and moreover it is becoming more scattered and complex.Through the comprehensive analysis, it is realized that the remained oil mainly exists in the reservoir where the water flooding can not reach and sweep; where although the oil is swept by the water flooding, the swept multiple is not enough, the remained oil mainly exists in the microscopic residual part of the reservoir where the pores can not be swept; the oil displaced efficiency is very high in the reservoir where the water flooding can sweep and moreover the swept multiple is rather higher.Therefore the main tackled research direction is still in increasing the water swept volume.Even the oilfield was changed to be chemically flooded in the late period of extra-high water cut, there is still some remained oil that cannot be swept within a certain reservoirs, so it is necessary to adopt the technique of increasing the sweep volume to enhance the oilfield recovery.

关键词(KeyWords)： 特高含水期;地质认识;开发特征;剩余油;提高采收率
ultra-high watercut period;geological understanding;development characteristic;remained oil;enhanced oil recovery(EOR)

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 袁庆峰,朱丽莉,陆会民,郑宪宝
YUAN Qingfeng,ZHU Lili,LU Huimin,ZHENG Xianbao

DOI: 10.19597/j.issn.1000-3754.201907089

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