排灌机械工程学报Issue(1)：56-59,79,5.DOI:10.3969/j.issn.1674-8530.12.0237
砂粒运移对砾石充填层损害试验与数值模拟
Experiments and numerical simulations of gravel packed layer damage due to sand migration
摘要
Abstract
As a sand control method,the gravel packing technique has been extensively applied in oil fields because of its merits,such as effective sand control effort and high well production.Naturally, reasonable explanation of its sand control mechanism and accurate prediction of well production are vi-tal for this technique.Among many factors,sand migration is the main factor that influences the pro-ductivity of a gravel-packed well and the technique design.In order to have a better understanding on the mechanism of gravel packed layer damage caused from sand migration and plugging and to provide a theoretical basis for well productivity prediction,the damage of gravel layer permeability,which was due to sand migration,was simulated experimentally in laboratory under different gravel-sand diameter ratios that were decided according to the reservoir characteristics of sanding in an oil field and the spe-cific sand control technique.The results show that the migration,invasion,and bridge plug of sand particles can lead to a significant change in the permeability of gravel layer;especially the damage near the interface between formation sand and gravel layer is the most serious.According to gravel-sand di-ameter ratio and sand intrusion degree,there are five types of mechanism for gravel blocking sand.A dynamic mathematics model is established by linear regression to predict the plug amount of formation sand per unit volume of gravel layer,and a numerical simulation is launched to simulate the experi-ment.The simulated results are in agreement with experimental data,suggesting the model has signifi-cance in quantitative evaluation of the damage on gravel layer caused from the migration of formation sand particles and well productivity prediction.关键词
砂粒运移/出砂/砾石充填/数值模拟/渗透率Key words
sand migration/sanding/gravel pack/numerical simulation/permeability分类
农业科技引用本文复制引用
李彦超,李明忠,王卫阳,王磊..砂粒运移对砾石充填层损害试验与数值模拟[J].排灌机械工程学报,2014,(1):56-59,79,5.基金项目
国家863计划项目（2006AA09Z351）；国家科技重大专项课题资助项目 （）
