用人工模拟裂缝装置研究盐酸/白云岩反应速率的影响因素

压裂酸化效果的好坏，在很大程度上上决定于酸岩反应速率的大小。通过选择和控制适当的工艺参数可以达到延缓酸岩反应速率，提高酸化效果的目的。文中利用人工模拟裂缝装置，研究了温度，注酸排量，裂缝宽度等因素对盐酸／白云岩反应速率的影响规律；并采用四因素四水平的正交试验，综合考察了温度，排量，酸浓度，缝宽四种因素对酸岩反应速度的影响的主次顺序，发现对酸岩反应速率影响力的大小次序为；酸浓度〉排量〉温度〉缝宽；最

Studying the influence factors of HCl/dolomite reaction rate by fracture simulation unit

The result of fracture acidizing is depended on the acidic rock reaction rate.Choosing and controlling the available technical parameter can delay the acidic rock reaction rate and improve the acidizing result.By using a fracture simulation unit,the regularity that temperature,flow rate and fracture width influence on HCl/dolomite reaction rate is investigated.The sequence of temperature,flow rate,acid concentration and fracture width influence to the acidic rock reaction rate is also studied in a four factors and four levels orthonormal test,and the sequence that acid concentration＞flow rate＞temperature＞fracture width is found.At the last,the possible HCl/dolomite reaction mechanism model which can explain the influence factors is derived.