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Comparison of Chemical Steam Floods through Vertical and Horizontal Wells

机译：垂直井和水平井中化学蒸汽驱的比较

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Laboratory investigations and field applications havernproved steam drive to be an effective enhanced oil recoveryrnmethod for reservoirs of moderate and heavy oil viscosity.rnThis experimental study was undertaken to investigate,rncombine and compare the performance and productivity ofrnwater, steam, alkaline steam, surfactant steam, and surfactantrnalkaline steam floods through vertical and horizontal wells.rnTo achieve the objectives of the study, two experimentalrnmodels (vertical and horizontal) are designed and built.rnIdentical porous media, reservoir fluids (crude oil andrnformation water), steam, chemicals, and injection/productionrnconditions are used and/or applied.rnThe results of the study showed that horizontal wellsrnare better candidates for waterflooding than vertical ones,rnwhen the same pore volume of water are injected in thernreservoir. Steam and chemical steam (alkaline steam,rnsurfactant steam, and surfactant alkaline steam) floodsrnrecovered more oil when applied through horizontal wells thanrnthrough vertical ones. In addition, chemical steam floodsrnrecover more oil than conventional steam drive for bothrnapplications of vertical and horizontal wells. The increment ofrnoil recovery due to application of horizontal wells instead ofrnvertical ones may be 10.27 % IOIP for steam flood and almostrn17.7 % IOIP for surfactant alkaline steam flood.rnThe displacement efficiency of oil recovery throughrnhorizontal wells is higher than that through vertical wells forrnsteam flood by almost 25 %, for alkaline steam flood byrnalmost 33 %, for surfactant steam flood by almost 37 %, andrnfor surfactant alkaline steam flood by almost 48 %. Thernproposed techniques of chemical steam floods have importantrnimplications for improving oil recovery from current waterrnflood and steam projects, since they combine the advantagesrnof both chemical and thermal recovery methods.
机译：实验室研究和现场应用已将蒸汽驱动提高为中，重油粘度储层的有效提高采油量的方法。本实验研究旨在研究，组合并比较水，蒸汽，碱性蒸汽，表面活性剂蒸汽和水的性能和生产率。表面活性剂碱性蒸汽通过垂直和水平井注水。为达到研究目的，设计并建立了两个实验模型（垂直和水平模型）。相同的多孔介质，储层流体（原油和地层水），蒸汽，化学药品以及注入/生产条件研究结果表明，当在储层中注入相同孔隙水量时，水平井比垂直井更适合注水。蒸汽和化学蒸汽（碱性蒸汽，表面活性剂蒸汽和表面活性剂碱性蒸汽）与水平井相比，通过水平井注水时采出的油更多。此外，对于垂直井和水平井，化学蒸汽驱能比常规蒸汽驱采更多的油。因采用水平井而非垂直井而产生的腈油采收率的增量可能是蒸汽驱的IOIP的10.27％，表面活性剂碱性蒸汽驱的IOIP的几乎是17.7％。rn水平井的采油驱替效率要高于垂直井的水平。几乎是25％，碱性蒸汽驱几乎是33％，表面活性剂蒸汽驱几乎是37％，表面活性剂碱性蒸汽驱几乎是48％。提出的化学蒸汽驱技术对提高当前注水和蒸汽项目的采油率具有重要意义，因为它们结合了化学和热采方法的优点。

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  • 来源
    《Technology advances》|2000年|p.1-10|共10页
  • 会议地点 Calgary(CA)
  • 作者

    Shedid A. Shedid; Al-Abbas A. Abbas;

  • 作者单位

    United Arab Emirates University, Chemical Petroleum Eng. Dept., Al Ain 17555, UAE.;

    Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, Egypt;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 定向钻井;
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