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为解决S油田含水率上升过快,减缓产量递减速度,需要对其进行凝胶堵水措施.通过对聚合物凝胶的机理研究,考虑了堵水过程中包括地下成胶化学反应、各种化学剂的损耗、化学组分的吸附和滞留、凝胶的降解、流动性能以及化学组分对水相黏度的影响等因素,建立起可动凝胶的三相七组分数值模型.通过模拟计算得出了合理的凝胶注入方式和注入量.为改善油田开采效果,减缓产量递减,提高采收率提供一条有效途径.
In order to solve the problem that the moisture content of oilfield S rises too fast and slows down the rate of production decline, it is necessary to carry out the gel plugging measures.Through the study on the mechanism of polymer gel, including the underground chemical reaction, The loss of chemical agents, the adsorption and retention of chemical components, the degradation of gels, the flowability and the influence of chemical components on the viscosity of aqueous phase, a three-phase seven-component numerical model of movable gel was established. Calculate the reasonable gel injection method and injection amount, and provide an effective way to improve the oil field mining effect, slow down the production decline and increase the oil recovery.