大庆油田特高含水期三元复合驱层系优化组合方法研究

The Optimized Layer Series Combination Method of ASP Flooding at Ultra-high Water-cut Stage in Daqing Oilfield

大庆油田三元复合驱部分区块暴露出层系组合跨度大、层间矛盾突出的问题,加之受国际油价持续走低的影响,其经济效益亦呈现进一步变差的趋势。因此,为了提高开发效果和经济效益,研究大庆油田三元复合驱层系优化组合尤为重要。应用油藏工程、数值模拟和数理统计相结合的方法,丰富完善了层系组合的指标体系,建立了一套高效科学的层系优化组合方法,创新发展了层系优化的组合技术经济检验指标,形成了一整套层系优化组合技术方法。结果表明,该方法可系统、全面、快速给出层系组合推荐方案,减少了人为因素的干扰,组合结果更加符合油田实际,可显著改善三元复合驱的开发效果和效益。

Field operation indicates that there exist problems such as long span of and severe interlayer contradictions of ASP flooding in some of the blocks in Daqing Oilfield and influenced by continuous decline of international oil price,there exists a trend of economic benefit being poorer.Therefore,to improve the oilfield development benefits and economic efficiency,it is important to study the optimized layer series combination for ASP flooding in Daqing Oilfield.The method of reservoir engineering,numerical simulation combined with mathematical statistics is used to complete the index system of optimized layer series combination,a set of efficient and scientific method of layer optimization is set up,the economic test index of the optimized layer combination is innovatively developed,a set of technical methods for optimized layer series combination are established.The result shows that the method can be used for systematically,comprehensively and rapidly providing a recommended scheme for optimized layer series combination,reducing the human interference,the combination is more suitable for oilfield operations,it can be used for obviously improving the effect of ASP flooding.