储层精细研究在特高含水老区综合调整中的应用

针对特高含水期老区油田水驱效果差,剩余油分布零散复杂,应用常规的措施及其调整方法提高采收率难度大的问题,以八面河油田面14区北块为例,从沉积微相研究入手,在储层精细研究的基础上,明确该区剩余油分布的主要地质因素及其分布规律,进而制定出适合面14区的改善水驱开发技术对策。通过相应的调整治理,采油速度、水驱控制程度、采收率明显提高,开发效果明显好转。

Application of Detailed Reservoir Study in Comprehensive Adjustment of Matured Oilfield with Extra-High Water Cut

The northern block of Mian-14 in Bamianhe Oilfield belongs to matured oilfield with extra--high water cut. It is encountered with such troubles as poor waterflooding effect, scattered and complex distribution of residual oil and difficulty in enhancing oil recovery by taking regular measures and adjustment method. Starting from the research of sedimentary microfacies and on the basis of detailed reservoir study, this paper obtains a clear picture of major geological factors and regularities of residual oil distribution in this block and then adopts the development technology which is applicable to improving water flooding in Mian--14. Proper adjustment has significantly increased rate of oil production, level of water flooding and recovery efficiency and improved development effect markedly.