早期注聚合物五点法井网密度的多目标优化  

Multi Objective Optimization of Five Spot Well Spacing Density by Early Polymer Flooding Process

作　　者：廉黎明[1,2] 秦积舜[1,2] 王强[1,2] 李俊键[3,4] 李金宜[5] 

机构地区：[1]中国石油勘探开发研究院提高石油采收率国家重点实验室,北京100083 [2]中国石油勘探开发研究院国家能源二氧化碳驱油与埋存技术研发(实验)中心,北京100083 [3]中国石油勘探开发研究院采油工程研究所,北京100083 [4]中国石油大学石油工程学院,北京102249 [5]中国海油天津分公司,天津300452

出　　处：《新疆石油地质》2013年第2期209-212,共4页Xinjiang Petroleum Geology

基　　金：国家科技重大专项(2011ZX05010);中石油科学研究与技术开发项目(2011B-1306)

摘　　要：早期注聚合物对于海上油田和国外开发区块十分必要,鉴于油田地质情况的复杂性,原来的单一因素优化已经不再适用。以五点法井网为研究对象,综合考虑油藏和经济双重目标,以聚合物溶液浓度、注入井注入能力、生产井产液能力及生产时间为限制条件,通过理论方法和经验回归,建立了以早期注聚合物累计采出量和净现值流量为目标的多目标优化模型。结合油田区块实例,通过用适应函数算法得到井网密度的优化解。将多目标优化的合理井网密度与单一目标下合理井网密度进行比较,结果表明,多目标优化方法适用性更强,更适用于五点法井网早期注聚的研究。Early polymer flooding plays a significant role in the exploration and development of domestic offshore oilfields and the blocks abroad. The former optimization methods with single factor are not available in view of complexity of the current oilfield geologic status. This paper establishes the multi-objective optimization model for study of cumulative production and net present value （NPV） rate by early polymer flooding process, through theoretic methods and empirical regression analysis, in which five-spot well pattern is taken as studied object, comprehensively considering reservoir and economy dual objectives, with limitations of polymer solution concentration, injection ca- pacity, productivity and production life, etc. The rational well spacing density is optimized by fitness function method and applied to the oil-field blocks. The results from comparison with the single objective optimization show that the multi-objective optimization method is better in adaptability and more suitable for five-spot well pattern study by early polymer flooding process.

关 键 词：早期注聚合物 多目标优化 累计采出量 经济净现值 控制条件 

分 类 号：TE357.43[石油与天然气工程—油气田开发工程]