基于层间干扰动态表征的多层砂岩油藏产能评价方法
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姜彬(1984—),男,山东烟台人,高级工程师,在读博士研究生,从事油气田开发及综合调整研究工作。E-mail:jiangbin@cnooc.com.cn。

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国家科技重大专项“海外重点油气田开发钻采关键技术”(2017ZX05032-004)。


Productivity evaluation method of multi-layer sandstone reservoir based on dynamic prediction of interlayer interference
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    摘要:

    多层砂岩油藏开发进入中高含水期,层间矛盾突出,层间干扰加剧,新钻调整井的产能预测难度大、精度低。为进一步分析油田不同含水率对多层砂岩油藏产能的影响,通过回归P油田不同流动能力突进系数下的层间干扰系数随含水率的变化趋势,建立层间干扰动态表征模型,形成层间干扰系数与流动能力突进系数和含水率变化关系图版,实现不同流动能力突进系数下对层间干扰系数随含水率变化的定量表征。通过建立无层间干扰条件下采油指数与地层流动系数的产能回归公式,指导P油田中高含水期调整井的产能评价。研究结果表明,基于层间干扰校正预测的P油田新投产调整井的产能误差为20%,低于层间干扰校正前,预测结果可靠。

    Abstract:

    At the middle and high water cut stages of multi-layer sandstone reservoir,the development between layers is uneven,and the interlayer interference is obvious,leading to the great difficulty and low accuracy of productivity prediction for newly drilled adjustment wells. To further analyze the influence of different water cuts on the productivity of multi-layer sandstone reservoirs,this paper constructed the dynamic prediction model of interlayer interference after the variation of interlayer interference coefficients with water cuts was analyzed under different breakthrough coefficients of flow capacity in P Oilfield. The relationship chart of interlayer interference coefficients with the breakthrough coefficients and water cuts was drawn to quantitatively characterize the variation of interlayer interference coefficient with water cuts under different breakthrough coefficients of flow capacity. The productivity formula between productivity index and formation flow coefficient without interlayer interference was constructed to guide the well productivity evaluation of P Oilfield at middle and high water cut stages. The results indicate that the productivity error of new adjustment wells in P Oilfield predicted by interlayer interference correction is 20%,which is lower than that before the correction,indicating a reliable productivity prediction result.

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姜彬,程时清,康博韬,郜益华,马康.基于层间干扰动态表征的多层砂岩油藏产能评价方法[J].油气地质与采收率,2022,29(2):124~130

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  • 在线发布日期: 2022-06-21
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《油气地质与采收率》
《油气地质与采收率》入选北大《中文核心期刊要目总览》2020年版