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稠油冷采模拟研究 被引量:1

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摘要 所谓“冷采” ,是指应用特殊的操作工艺和泵抽设备 ,刺激油层出砂 ,开采稠油油藏。稠油冷采鼓励疏松砂岩稠油油藏大量产砂 ,相当于改变了井眼的几何形态 ,产生“蚯蚓洞”和膨胀带 ,也可能产生洞穴。同时 ,原油呈连续泡沫状产出 ,像巧克力糊 ,说明原油在地下就产生了泡沫溶解气驱。由于溶解气稳定存在于泡沫中而不逸出 ,较好地保持了油藏压力 ,其结果是使原油产量和采收率非常高。S Chugh等人在其最近发表的一篇文章中〔1〕,对稠油冷采之所以高产的机理进行了深入研究 ,并提出了适合冷采的油藏类型。本文中 ,将这些机理有关的基础概念扩展到实际工作中 ,即采用直观的模拟方法 ,应用现有的黑油油藏模型器 ,改换输入数据即可。重要的是 ,这些方法已成功地用来拟合加拿大西部常规稠油油藏的冷采生产动态。通过历史拟合模型 ,可以用这些方法对油井将来的冷采参数进行优化设计 ,并计算出更可靠的最终采收率。同时 ,还可以用这些方法进行敏感性研究 ,包括不同油藏参数和操作参数 (如油藏压力、日产量等 )敏感性研究 ,以及冷采压力消耗后对以后的二次采油和三次采油的影响。
出处 《国外油田工程》 2003年第1期8-12,9-12,共5页 Foreign Oilfield Engineering
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同被引文献4

  • 1沈平平 等.油层物理实验技术[M].北京:石油工业出版社,1995..
  • 2何更生.油层物理[M].北京:石油工业出版社,2004:80—81.
  • 3张玄奇.石油工程实验教程[M].陕西西安:西北大学出版社,2001.
  • 4薛定谔.多孔介质中的渗流物理[M].北京:石油工业出版社.1984.

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