井间动态连通性评价新方法研究

发布时间：2018-08-08 22:05

【摘要】：中国主力油田目前均已进入开发中后期,存在水驱效率低、油井含水率高等问题,为更加快速、高效地研究油藏井间的动态连通性,降低开发成本,对基于注采数据的传统连通性评价方法进行了改进。通过研究油水井的动态注采数据,以井间连通单元为对象,建立考虑生产井间相互干扰的物质平衡方程,并以此为基础,采用线性化求解方法,拟合实际动态注采参数,反演得到井间连通参数。研究表明,改进后的方法计算速度极大提高,连通性评价结果与示踪剂测试吻合度更高。评价结果可很好地指导油田下一步的措施方案,具有一定的现场推广价值。
[Abstract]:At present, the main oil fields in China have entered the middle and late stage of development, and there are some problems such as low efficiency of water drive and high water cut in oil wells. In order to study the dynamic connectivity between wells more quickly and efficiently, and to reduce the development cost, The traditional connectivity evaluation method based on injection-production data is improved. By studying the dynamic injection-production data of oil-water wells, taking the inter-well connectivity unit as the object, the material balance equation considering the inter-well interference is established. On the basis of the equation, a linearized solution method is adopted to fit the actual dynamic injection-production parameters. The interwell connectivity parameters are obtained by inversion. The results show that the calculation speed of the improved method is greatly improved, and the connectivity evaluation results are more consistent with the tracer test. The evaluation results can well guide the next step of the oil field, and have a certain value of field promotion.
【作者单位】：中国石油勘探开发研究院;长江大学;
【基金】：国家科技重大专项“老油田二三结合潜力评价和重点区块实验方案研究”(2016ZX05010-005)
【分类号】：TE331

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