水驱速度对束缚型和油膜型剩余油动用的影响理论及实验  

THEORIES AND EXPERIMENTS OF THE WATER-FLOODING-RATE INFLUENCES ON THE DEVELOPMENT OF THE CAPTURED AND FILM TYPE REMAINED OIL

作　　者：黄迎松[1] HUANG Yingsong(Exploration and Development Research Institute of Sinopec Shengli Oilfield Company, Dongying 257015, China)

机构地区：[1]中国石油化工集团公司胜利油田分公司勘探开发研究院,山东东营257015

出　　处：《大庆石油地质与开发》2018年第2期56-61,共6页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家科技重大专项"特高含水后期整装油田延长经济寿命期开发技术(2016ZX05011-001)

摘　　要：为进一步探讨注水速度提高剩余油采收率的机理,开展了增大注水速度对剩余油影响的理论和实验研究。利用孔隙中水驱油的力学原理,分析了注水速度对束缚在孔隙中的剩余油和油膜型剩余油运动的影响,建立了定量测定剩余油的新方法。研究表明,通过增大注水速度克服束缚型剩余油的贾敏效应,增加注水速度、增大水流和油膜间的剪切应力,是提高束缚型和油膜型剩余油动用程度的有效途径。实验结果表明,当注水速度从0.05 m L/min增大到0.5 m L/min时,剩余油饱和度从38.2%降至18.8%,采出程度增加了19.4%。实验测定结果证明,增大注水速度提高剩余油采收率,是特高含水油田提高采收率的一种有效方法。In order to explore the mechanism of enhancing the remained oil recovery by increasing the water injection rate,the theoretical and experimental researches on the influences of the increased water injection rate on the remained oil were conducted.With the help of the mechanical principle of the oil flooded in the pore by the water,the influences of the water injection rate were analyzed on the movements of the remained oil and film-type remained oil captured in the pore,the new method of quantitatively determining the remained oil was established.The studies show that by means of increasing the water injection rate,the Jamin effect of the captured-type remained oil can be overcome.In a word,increasing the rate,water flow and the shear stress among the oil film is the effective approaches of enhancing the developed degree of the captured-type and film-type remained oil.The experimental results show that when the water injection rate increasing from 0.05 mL/min to 0.5 mL/min,the remained oil saturation decreases from 38.2% to 18.8% and the oil recovery degree enhances by 19.4%.The tested results of the experiment verify that increasing water injection rate can enhance the recovery factor of the remained oil,so it can be oneof the effective approaches to enhance the oil recovery for the oilfield at extra-high watercut stage.

关 键 词：剩余油 注水速度 束缚型 油膜 采收率 

分 类 号：TE358[石油与天然气工程—油气田开发工程]