西安石油大学学报（自然科学版）2025，Vol.40Issue(3)：89-96,121,9.DOI:10.3969/j.issn.1673-064X.2025.03.010
预充填挡砂介质对筛管过流能力影响的实验研究
Experimental Study on Influence of Pre-packing Sand-retaining Medium on Fluid Passing Capacity of Screen Tube
摘要
Abstract
Aiming at the problem that the pre-packed sand control screen is easy to be blocked in the downhole sand control process,and the liquid passing capacity decreases greatly in the initial stage of production,the factors influencing the liquid passing capacity of the pre-packed screen were studied by using the self-developed visual sand control simulation device.The experimental results show that with the increase of gravel layer packing rate,the compaction degree of gravel in the punching slot on the outer protective shroud increa-ses,resulting in a significant decrease in the flow channel size of the pre-packed sand control screen.When the packing rate of the sand retaining medium increases to 100％,the flow channel size of the screen is the smallest,the bridging speed of the formation sand inside and outside the screen is the fastest,and the reduction of the flow capacity of the screen in the initial stage of production is the largest.In order to achieve high efficiency sand control by pre-packed sand control screen,the ratio of the median particle size of sand-retaining media to the median particle size of formation sand(D50/d50)should increase exponentially with the packing rate of sand-retaining media(R),that is,D50/d50=0.019 8 exp(0.063 8 R).The research results can help solve the problem of easy blockage in the sand control process of pre-packed screen tubes,and provide theoretical support for the scientific design of pre-packed screen tubes in oil fields.关键词
预充填筛管/砾石/填充率/防砂模拟实验Key words
pre-packed sand control screen/gravel/packing rate/sand control simulation experiment分类
石油、天然气工程引用本文复制引用
马成云,窦益华,邓金根,赵凯,窦亮彬..预充填挡砂介质对筛管过流能力影响的实验研究[J].西安石油大学学报（自然科学版）,2025,40(3):89-96,121,9.基金项目
国家自然面上项目(52374009) （52374009）
中国博士后科学基金面上项目(2023MD734222) （2023MD734222）
陕西省博士后科研项目(2023BSHEDZZ319) （2023BSHEDZZ319）
陕西省重点研发计划(2023-YBGY-312) （2023-YBGY-312）
