火驱稠油模拟乳状液制备条件研究

以火驱W/O型乳状液为例,系统研究了搅拌转速、搅拌时间、搅拌形式等因素对乳状液制备的影响,优选了乳状液的制备条件,并将室内制备的模拟乳状液的粘度和相同含水率的现场采出液的粘度进行了对比,确定了室内制备乳状液的条件。实验表明:间歇式搅拌好于连续性搅拌;随着搅拌转速的增加,配制模拟乳状液所需时间减少;在同一搅拌转速下,在搅拌初期,随着搅拌时间的增加,形成的乳状液表观粘度逐渐增加,但当乳状液达到某一状态时,若继续增加搅拌时间,乳状液的表观粘度基本维持不变。

Preparation of Simulative Emulsion for Fire Flooding Heavy Oil

Taking fire flooding W/O type emulsion as an example, effects of mixing speed, mixing time, mixing form and other factors on emulsion preparation were studied, preferable emulsion preparation conditions were chosen, viscosities of the simulated emulsion prepared at indoor and on-site produced liquid with the same water content were compared, the conditions of emulsion preparation at room were determined. Experiments show that, intermittent agitation is better than continuous stirring;with the increase of stirring speed, the time required for the preparation of the emulsion reduces;At the same stirring speed, in the initial stage of stirring, with the increase of stirring time, the apparent viscosity of the emulsion gradually increases, but when the emulsion reaches a certain state, if the stirring time increases any more, the apparent viscosity of the emulsion remains unchanged.