苏丹P油田注水时机实验及数值模拟研究  

EXPERIMENTAL STUDY AND NUMERICAL SIMULATION ON P OILFIELD IN THE PROCESS OF WATER INJECTION

作　　者：王黎[1,2] 饶良玉[2] 李薇[2] 李捷[2] 

机构地区：[1]中国地质大学(北京)能源学院,北京海淀100083 [2]中国石油勘探开发研究院,北京海淀100083

出　　处：《西南石油大学学报（自然科学版）》2011年第3期109-114,197-198,共6页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：国家科技重大专项(2008ZX05058)

摘　　要：针对大型高凝油藏地层能量变弱、含水上升快、产量递减迅速等问题,结合海外油田高产稳产及高凝固点、高含蜡和高地饱压差等特点,建立了实际地层高温高压物理模拟实验系统,采用不同渗透率的岩芯,模拟不同驱替压力对开发效果的影响,得出最佳注水时机是脱出气体尚未形成连续相之前。采用数值模拟技术优化转注时机和采油速度,提出在合理利用天然能量的前提下,地层压力下降到3.4 MPa为最佳的注水时机,合理的采油速度是2.2%。注采井组试验结果表明:适时注水可较好地保持地层能量,提高产液量,改善开发效果。To solve the problems of the decrease of reservoir energy,the fast rise of water-cut and the rapid decreaseof production in the huge high pour-point oil reservoir,according to the characteristics of high,stable yields,highpour-point,high wax content,and high pressure differential between static and saturation pressure overseas oilfields,a high temperature and high pressure physical simulation experimental system is established.We simulate the effectof different core flooding pressure on development performance under the in-situ situation,and the results showX Journal of Southwest Petroleum University(Science & Technology Edition) Jun.2011that the optimized water flooding timing is before dissolved gas form the connectivity face.Utilizing the numericalsimulation technology under the condition of making full use of natural energy,when the reservoir pressure decreasesto 3.4 MPa,the water flooding timing is the best,and the optimized production rate is 2.2%.The results of the pilottest show that the good water injection timing can maintain the reservoir energy,increase liquid production andimprove development performance.

关 键 词：高凝油藏 注水时机 长岩芯实验 数值模拟 高地饱压差 

分 类 号：TE349[石油与天然气工程—油气田开发工程]