非均质油藏水驱前缘理论计算方法研究
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
受非均质性影响,注水井周围各方向吸水量差异巨大,从而影响了水驱前缘的运动方向。结合岩心组合模型实验及现场取心数据,在贝克莱-列维尔特公式的基础上,提出了针对非均质油藏水驱前缘计算的新方法。利用该方法对王窑地区实际井组进行计算,结果表明,水驱前缘的运动方向即井组的优势注水方向为南北主轴东北方向40°、南北主轴西北方向20°,与微地震测试结果进行比较,误差仅为3%,符合度较高。经过公式预测,注水开发9 a后井组中w6井首先见水,后经过2 a的开发,w2井见水,在此基础上针对井网加密调整方案提出相应建议。以均质油藏的计算方法计算同一井组,注水优势方向以及突破时间误差均较大,新的计算方法具有明显优势。
Due to heterogeneity,the water absorption in all directions around water injection well varies greatly,restricting the heading of waterflood front. With the experiment of combined core model and the field coring data,a new calculation method based on Buckley- Leverett formula is proposed for waterflood front in heterogeneous oil reservoir. This method is used for a well cluster in Wangyao area,indicating that the heading of waterflood front,namely,the predominant water injection direction in the cluster,is40° northeast and 20° northwest of S- N axis,with only a 3% deviation from the microseismic test results,which presents a high coincidence. Based on the predication with the formula,water breakthrough occurs in Well w6 after 9a of water injection and then in Well w2 after 2a of development. On this basis,recommendations are put forward on well infilling. Moreover,the calculation method used for homogeneous oil reservoir is applied to the same cluster,showing large errors in predominant water injection direction and water breakthrough time. Therefore,the new method is more favorable,
引文
[1]阎静华,徐英娜,朱华丽,等.水驱前缘和裂缝监测技术研究与现场应用[J].断块油气田,2005,12(6):59.
    [2]刘华勇,程林松,黄世军,等.巨厚古潜山油藏水平井开发可行性及合理注水方式研究[J].重庆科技学院学报:自然科学版,2009,11(3):34-36.
    [3]何文祥,杨乐,刘逸.水驱前后储层渗流单元变化特征研究[J].天然气与石油,2011,29(2):54.
    [4]赵雁峰,涂波.微地震法水驱前缘监测技术时间推移监测试验[J].内蒙古石油化工,2010,36(9):124-125.
    [5]Jupe A,Cowles J.Microseismic monitoring:listen and see the reservoir[J].World Oil,1998,219(12):171-174.
    [6]郭志华.微地震注水前缘检测在低渗油藏史103井区的应用及分析[J].内蒙古石油化工,2013,39(8):137-139.
    [7]李涛,姜汉桥.高含水期利用指进现象调整油藏注采结构[J].科学技术与工程,2014,14(4):42-56.
    [8]贾金伟,张伟.砂岩油藏注水井水驱前缘计算方法研究[J].重庆科技学院学报:自然科学版,2013,15(1):104-108.
    [9]翟云芳.渗流力学[M].北京:石油工业出版社,2003,9(2):86-87.
    [10]周英芳,方艳君.多层油藏非活塞式水驱驱替效率研究[J].油气地质与采收率,2009,16(1):86-90.

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心