摘要
砾石充填防砂设计中,合理的砾石尺寸是防砂措施得以成功实施的关键。针对目前几种常用砾石尺寸设计方法的不足,以及施工中实际使用的工业砾石是多种粒径的砾石混合而成的特点,通过研究实际充填条件下两种粒径混合的砾石排列结构,建立了砾石层孔隙结构模型,并对砾石层的孔隙尺寸进行了计算和分析。在Saucier方法的基础上,提出了一种新的、符合工业砾石实际情况的、混合粒径砾石充填防砂的砾石尺寸精选思路,并给出了该思路的计算方法。考虑到新建模型的理想性,因此又对计算方法进行了修正,使之更符合砾石充填的实际情况。该砾石尺寸设计方法同时还考虑了地层砂的均匀性对防砂效果的影响,因此,具有实用性强、适用性广、设计结果较其他常规方法更为精确的特点。
In design of gravel packing and sand control, reasonable selection of gravel sizes is the key to implement sand control successfully. Due to the defects in commonly used methods for gravel size design, and the gravel characteristic in field operation which are a mixture of various particle sizes,a pore structure model in gravel layer was developed by studying the actual gravel pack structure of gravel with two diameters. The pore sizes in gravel layer was calculate presents a new idea for gravel size optimization the computation method. The modification of th d and analyzed. Finally,based on Saucier method,the paper and sand control with multiple grain diameters, and gives e computing method considering the ideal condition of the model makes it more consistent with the actual situation of gravel pack. The gravel size design takes into account the effect of formation sand uniformity on sand control, so it has the wide application and more accuracy than other conventional methods.
出处
《石油钻探技术》
CAS
北大核心
2011年第3期92-95,共4页
Petroleum Drilling Techniques
基金
国家科技重大专项"大型油气田及煤层气开发"(编号:2008ZX05024-003)资助
关键词
砾石充填
防砂
数学模型
优化设计
gravel packing
sand control
mathematical model
optimizing design
