中高渗透砂岩油田优势流场识别与调整
发布时间：2018-10-10 16:22
【摘要】：对于非均质性较强的中高渗透砂岩油田,由于开发及地质原因,在高含水开发阶段注入水沿天然高渗透条带形成无效循环,导致制定的剩余油挖潜措施实施效果较差。因此,准确识别该阶段的优势流场,对于有效控制优势流场和制定挖潜剩余油措施至关重要。以高含水开发阶段的双河油田某区块为研究对象,通过模糊综合评判,结合流线数值模拟技术,制定优势流场的判别标准;通过各小层油水井间的流线分布、注采分配因子和注水效率,确定单井组注水井向该井组不同受效井方向的分水量及注水效率。定性、定量判别研究区油水井间优势流场的平面分布规律。自2013年6月现场进行变流线矢量化调整,截至2015年10月,研究区综合含水率下降1.5%,累积增产原油3.15×10~4t,采收率提高1.2%,取得了较好的稳油控水效果。
[Abstract]:For the medium and high permeability sandstone oilfield with strong heterogeneity, because of the development and geological reasons, the ineffective cycle of injected water along the natural high permeability strip in the high water cut development stage is formed, which results in poor implementation of the measures for tapping the potential of remaining oil. Therefore, accurate identification of the dominant flow field in this stage is of great importance to effectively control the dominant flow field and to formulate measures for tapping potential remaining oil. Taking a block of Shuanghe Oilfield in high water cut stage as the research object, through fuzzy comprehensive evaluation, combined with streamline numerical simulation technology, the discriminant standard of superior flow field is established, and the flow line distribution among oil and water wells in each small layer is obtained. The injection-production distribution factor and water injection efficiency are used to determine the water distribution and water injection efficiency between the single well group and the different effective wells in this well group. Qualitative and quantitative discriminating the plane distribution of the dominant flow field between oil and water wells in the study area. Since June 2013, the variable streamline vectorization has been carried out on the spot. By October 2015, the comprehensive water cut in the study area has decreased by 1.5 parts, the cumulative production of crude oil has increased by 3.15 脳 10 ~ (-1) t, the oil recovery has been increased by 1.2, and the effect of stabilizing oil and controlling water has been achieved.
【作者单位】： 东北石油大学石油工程学院;中国石油大庆油田有限责任公司榆树林油田;
【分类号】：TE34
本文编号：2262452
[Abstract]:For the medium and high permeability sandstone oilfield with strong heterogeneity, because of the development and geological reasons, the ineffective cycle of injected water along the natural high permeability strip in the high water cut development stage is formed, which results in poor implementation of the measures for tapping the potential of remaining oil. Therefore, accurate identification of the dominant flow field in this stage is of great importance to effectively control the dominant flow field and to formulate measures for tapping potential remaining oil. Taking a block of Shuanghe Oilfield in high water cut stage as the research object, through fuzzy comprehensive evaluation, combined with streamline numerical simulation technology, the discriminant standard of superior flow field is established, and the flow line distribution among oil and water wells in each small layer is obtained. The injection-production distribution factor and water injection efficiency are used to determine the water distribution and water injection efficiency between the single well group and the different effective wells in this well group. Qualitative and quantitative discriminating the plane distribution of the dominant flow field between oil and water wells in the study area. Since June 2013, the variable streamline vectorization has been carried out on the spot. By October 2015, the comprehensive water cut in the study area has decreased by 1.5 parts, the cumulative production of crude oil has increased by 3.15 脳 10 ~ (-1) t, the oil recovery has been increased by 1.2, and the effect of stabilizing oil and controlling water has been achieved.
【作者单位】： 东北石油大学石油工程学院;中国石油大庆油田有限责任公司榆树林油田;
【分类号】：TE34
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