重芳烃石油磺酸盐驱提高原油采收率试验研究

介绍了一种适用于产出液高含水期油田的、具有提高残余原油采收率作用的廉价驱油用表面活性剂——重芳烃石油磺酸盐 ( HAPS)及其特殊的驱油方式 .室内试验结果表明 ,HAPS与现场地层水配伍性良好 ,w( HAPS)为 0 .2 %～ 0 .3%的水溶液在产出液高含水情况下 ,可使残余原油采收率的累计增加值保持在 7%～ 8%的范围内 .胜利油田孤南 N- 2 80 1井区现场试验表明 ,低质量分数的 HAPS驱具有明显的提高原油采收率作用 ,采出原油的物性较一般的水驱有显著的变化 ,对于非均质性不太突出的油藏 ,HAPS驱具有良好的现场应用前景 .

Experimental Study of Heavy Aromatic Petroleum Sulfonate Improving Oil Recovery Factor

Heavy aromatic petroleum sulfonate (HAPS) is a cheap surfactant for oil displacement. It has a good oil displacement effectiveness. Laboratory experiments show that HAPS has the great abilities of emulsifying and disbonding crude oil asphaltene, and it has also good compatibility with formation water in field. The formation residual oil of 7%～8% can be produced under the condition of high water cut when its mass fraction is 0.2%～0.3% in aqueous solution. The field tests in Shengli Oil Field show that HAPS has good oil displacement result when its mass fraction is little, and that the property of the produced crude oil is different from that of the oil produced by water flooding. HAPS is especially suited to the reservoirs with little heterogeneity.