Sand control optimization applied to moderately sanding wells in offshore loose sandstone reservoirs
Sand control optimization applied to moderately sanding wells in offshore loose sandstone reservoirs
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作者：
W. Lihua
在室内大型出砂模拟实验研究成果的基础上，参考国内外各种防砂选择方法，提出了地层粒径中值（d50）、均匀系数（UC）、页岩含量（Vsh）、蒙脱石含量等防砂选择理论参数。这些参数可用于疏松砂岩储层适度防砂技术的实际应用。此外，通过统计分析中国四个海域的储层特征，在实验中模拟不同防砂方法的出砂，并在实际案例中考察各种方法的防砂效果，提出了适用于中国海上松散砂岩储层适度出砂井的防砂方法选择标准，并相应构建了一套防砂方法优化图，以中位数为参考将地层粒度（d50）作为设计储砂精度的标准，并应用于国内几个新开发油藏的防砂设计，取得了满意的效果。
Based on research results of indoor large-scale sanding simulation experiments and referring to various sand control selections both at home and abroad,we proposed some theoretical parameters for the sand control selection,such as the median value of formation grain size(d50),uniformity coefficient(UC),shale content(Vsh,) and smectite content.These parameters can be used in the practice of applying moderate sand control techniques in loose sandstone reservoirs.In addition,through statistically analyzing reservoir characteristics of four sea areas in China,simulating sanding with different sand control methods in experiments and examining sand control effects of various methods in a real case,we presented some selection criteria of sand control methods applied to moderate sanding wells in offshore loose sandstone reservoirs of China,and correspondingly built a set of charts for the sand control method optimization,which referred to the median value of formation grain size(d50) in designing the sand retention precision and has been applied in the sand control design of several newly developed reservoirs in China with satisfactory results.