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搞清油藏的流体分布及其储量动用状况等,是改善注水开发效果进行开发方案研究的前提。该文利用数值模拟方法,在对永安3-2断块将近30年开采历史进行历史拟合的基础上,得到了剩余储量及剩余油分布等,明确了开发潜力所在,并着重研究了细分层系、调整注采关系和加密调整对未来开发动态的影响。数模预测结果表明:①细分层系后,减少了层间干扰,提高了注水效果;②主力油层通过调整注采关系,抽稀井点生产,同样可以延长稳产期,并能达到提液增油的目的;③非主力油层通过调整注采关系和加密调整,增油效果显著;④该研究对整个永安3断块的后期开发调整具有一定的指导意义。
To clarify the reservoir fluid distribution and utilization of reserves, etc., is to improve the effect of water injection development program research on the premise. Based on the history fitting of the mining history of Yongan block 3-2 for nearly 30 years, the remaining reserves and remaining oil distributions were obtained by numerical simulation. The development potential was clarified and the subdivision Layer system, adjust the relationship between injection and mining and encryption adjustment on the future development of dynamic impact. The results of numerical simulation show that: (1) After subdivision, the inter-layer interference is reduced and the water injection effect is enhanced; (2) The main reservoir can prolong the stable production period by adjusting the relationship between injection and production, The purpose of increasing oil; ③ non-main reservoir by adjusting the relationship between injection and mining and encryption adjustment, oil significantly; ④ The study of the entire block Yong’an 3 late development and adjustment of some guidance.