倾斜转滴技术对化学驱油体系中油滴聚并规律的研究

利用改进的倾斜转滴技术研究了化学驱油体系中碱、表面活性剂、聚合物和盐对孤立的滴聚并的影响，并利用聚并实验数据对界面粘度进行了推算。发现表面活性剂的存在不利于油滴的聚并，盐和聚合物的存在可提高油滴聚并速率，碱对聚并的影响具有表面活性剂和盐的双重作用。

A STUDY ON COALESCENCE OF OIL DROPS IN CHEMICAL FLOODING SOLUTIONS BY USING AN IMPROVCO INCLINED SPINNING DROP MOTHOD

The coalescence of Karamay crude oil drops in various aqueous chemical flooding solutions were studied by using an improved inclined spinning drop method under controlled conditions.The aqueous solutions used were:distilled water and solutions of petroleum sulfonate(PS,TRS 10-410),NaCl,Na2CO3,HPAM (AT530),PS/NaCl,Na2CO3/PS and Na2CO3/NaCl.From the experimental data obtained the coalescing rates,interfacial tensions(IFTs) and viscosities(IFVs) are determined.It is shown that NaCl and AT530 promote and TRS10-410 impedes the drop coalescence;Na2CO3 at lower concentrations impedes and at higher concentrations promotes the drop coalescence; for the systems with higher IFVs the coalescing rates were smaller;no direct corelation was found between IFTs and coalescing rates.