内源微生物激活体系在多孔介质中的吸附规律研究

Adsorption Mechanism of Indigenous Microbial Activator in Porous Medium

激活剂是保证内源微生物驱油效果的重要因素。为了确定內源微生物采油用激活体系在油藏多孔介质中的吸附规律,采用静态吸附和动态吸附方法在模拟的油藏条件下研究了激活剂(葡萄糖和硝酸钠)在固体介质石英砂上吸附行为。结果表明:在静态吸附中,葡萄糖和硝酸钠的吸附均符合Langumir吸附模型;葡萄糖的饱和吸附量为1.024 mg/g,高于硝酸钠的饱和吸附量0.897 mg/g。在填砂管物理模型的动态吸附中,葡萄糖和硝酸钠滞留量分别是0.113 3 mg/g和0.067 4 mg/g,与同浓度的静态吸附结果相比,葡萄糖与硝酸钠的动态滞留量都要小,且各营养组分在岩心中并没有发生明显的色谱分离现象。

Nutrition activator plays the important role in the indigenous microbial enhanced oil recovery （ IME- OR）. In order to determine the absorption mechanism of the activator in the porous medium, the adsorption of glu- cose and nitrate on the quartz sand were investigate by the static and dynamic adsorption methods under the simula- tion condition. formed to the The static results showed that the adsorption of glucose and nitrate on the quartz sand were con- Langmuir adsorption model, the maximum adsorption quantity of glucose and nitrate is 1. 024 mg/g and 0. 897 mg/g respectively. The dynamic results demonstrate that the retention of glucose and nitrate in porous medium are 0. 113 3 mg/g and 0. 067 4 mg/g respectively, and the dynamic retention is greater than the maximum static adsorption quantity.