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方法 运用正交设计法和数值模拟手段 ,深入细致地研究了吞吐注汽参数、不同井距下吞吐、吞吐转汽驱、吞吐转热水驱等开发方式。目的 优化吞吐注汽参数及接替开发方式 ,提高油田开发效果。结果 该方法优化孤岛油田中二北Ng5 3+4 稠油油藏蒸汽吞吐周期注汽强度为 2 0 0～ 2 5 0t/m ,注汽速度为 1 5 0～ 2 0 0t/d ,焖井时间为 3～ 5d ;大井距加密至小井距吞吐 ,再转蒸汽驱开采方式为最佳接替方式。结论 该方法很好地优化了孤岛油田中二北Ng5 3+4 稠油油藏吞吐注汽参数和接替方式问题 ,为该油田的合理开发提供了科学依据。
Methods By means of orthogonal design and numerical simulation, the development methods of huff and puff through parameters, huff and puff under different pit, huff and puff swallow, swollen and swollen by swallow and so on were researched in detail and in detail. Objective To optimize the parameters of huff and puff and to take the place of development to improve the effect of oilfield development. Results The method optimized the steam injection cycle steam injection cycle of Erbeibei Ng5 3 + 4 heavy oil reservoir in Gudao Oilfield with a steam injection rate of 200 ~ 250t / m and a steam injection rate of 150 ~ 2000t / d, The time is 3 ~ 5d; the well distance is encrypted to the well spacing throughput, then the steam drive recovery mode is the best replacement mode. Conclusions The proposed method optimizes the huff-and-puff parameters of Huabei oilfield, and provides a scientific basis for the rational development of this oil field.