【作者】 张红卫；

【导师】 吴文祥；

【作者基本信息】 大庆石油学院 ， 油气田开发工程， 2003， 硕士

【摘要】 近年来，随着聚合物驱工业推广规模的不断扩大，人们在聚合物驱过程中进行了多项剩余油挖潜方法的研究。但是，以往的研究都是针对聚合物驱不同开发阶段提出来的，因此在与精细地质研究成果的结合上有时会缺乏连续性和系统性。为了充分聚合物驱的作用，使聚合物驱厚油层剩余油挖潜技术得到更深入的发展，喇嘛甸油田北东块聚合物驱在开展聚合物驱转后续水驱时机研究的同时，加强了聚合物驱精细挖潜工作的研究力度，并在此基础上，对喇嘛甸油田聚合物驱后期综合调整方法进行了归纳整理，以期能够使该项技术更加科学化、规范化。 本文详细地介绍了北东块聚合物驱葡Ⅰ1-2油层的沉积特征和聚合物驱后剩余油分布特征，并给出了北东块转后续水驱后，开发指标的变化。在此基础上，对北东块聚合物驱后续水驱阶段的调整方法进行研究，并对此进行了效果评价，给出了转后续水驱的时机判定公式及决定聚合物转后续水驱实际的主要影响因素。 在数模基础上，预测了聚合物用量大于400PV·mg／L，不同的聚合物用量时的开发指标，以及不同的后续水驱注入速度的最终采收率值。同时，对调整后的方案进行经济效益评价，给出了投入产出比，为该油田其它区块后续水驱调整提供了理论的依据。更多还原

【Abstract】 Recently, multiple options enhanced oil recovery for remaining oil was developed through polymer flooding processes with the expanding of polymer flooding industries. However, the former studies were brought forward against the different development phases of polymer flooding. Thus, there was lack of continuity and systematization when these methods matching with the outcome of precise geological studies. In order to exert the function of polymer flooding fully, and further develop the enhanced oil recovery of remaining oil bearing in thick reservoir layers for polymer flooding, it was enhanced to the study of precise enhanced oil recovery for polymer flooding in the polymer flooding in north-east block of Lamadian oilfield, while developing the study as polymer flooding transforming to following water flooding. And on the basis of it, it was concluded and treated to the integrated adjustable methods for polymer flooding in north-east block of Lamadian oilfield at the latter development period so that it could made this technology became more scientifization and standardization.This paper introduced the details of the sedimentary character and the distribution character of remaining oil after polymer flooding in the pay-sands Pu I 1-2 of north-east block which utilized the polymer flooding. And this paper gave the changed of development indexes that was of following water flooding in the north-east water flooding. Based on it, the adjustable methods were studied which were for polymer flooding in north-east block at following water flooding period, and gave the evaluation of its effect. At the meanwhile, this paper gave the equations of deciding occasion of following water flooding and the important practical factors which decided the polymer flooding transforming to the following water flooding.Based on the numerical model, it forecasted the development indexes for the different dosage of polymer when the dosage of polymer was more than 400PV mg/L. It also forecasted the value of ultimate recovery factor for following water flooding at the different injection rates. At the same time, it evaluated the economic benefit of the adjusted project and gave the ratio of investment versus profit. All of these provided the academic basis for the adjustment of other blocks of the oilfield which used the following water flooding.更多还原