| 扇三角洲储层微观剩余油分布模拟试验 |
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| 引用本文： | 刘太勋,徐怀民.扇三角洲储层微观剩余油分布模拟试验[J].中国石油大学学报(自然科学版),2011,35(4). |
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| 作者姓名： | 刘太勋 徐怀民 |
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| 作者单位： | 1. 中国石油大学地球科学与技术学院,山东青岛,266555
2. 中国石油大学地球科学学院,北京,102249 |
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| 摘 要： | 利用图像分析系统对大港油田孔南地区某断块孔店组一段扇三角洲储层不同岩相单元样品进行微观孔隙结构的刻画,制作光刻模型,分别采用恒压注水和变压注水的方式开展微观剩余油分布模拟试验,对试验过程进行录像及图像采集,定性和定量地研究微观剩余油的分布,分析不同岩相单元中水驱油过程及微观剩余油分布模式,探讨剩余油分布的控制因素.研究结果表明:扇三角洲储层中剩余油微观分布形态主要有不连通孔隙中由于阻断现象形成的孤岛状剩余油(占剩余油总量的75%)、小孔喉区由于卡断现象形成的剩余油(占剩余油总量的20%)以及珠状、膜状剩余油(不超过剩余油总量的5%)；控制不同岩相单元中驱油效率和剩余油分布的因素主要为孔隙结构、驱油压力、驱替流量及流速,孔隙结构类型是影响恒压条件下驱油效率的根本因素,驱油压力和驱油方式是影响驱油效率的关键因素,提高驱油压力、采用变压不稳定注水方式能够使驱油效率提高1倍.
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| 关 键 词： | 扇三角洲 岩相单元 微观剩余油 光刻模型 图像分析 |
Micro-remaining oil distribution simulation test of fan delta reservoir |
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| LIU Tai-xun,XU Huai-min.Micro-remaining oil distribution simulation test of fan delta reservoir[J].Journal of China University of Petroleum,2011,35(4). |
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| Authors: | LIU Tai-xun XU Huai-min |
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| Affiliation: | LIU Tai-xun1,XU Huai-min2 (1.School of Geosciences in China University of Petroleum,Qingdao 266555,China,2.College of Geosciences in China University of Petroleum,Beijing 102249,China) |
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| Abstract: | Microscopic pore structure in different types of lithofacies units of fan delta reservoir in the first member of Kongdian group was characterized by photo lithography model and image analysis system in a block of Kongnan area,Dagang Oilfield.The distribution of micro-remaining oil was simulated by constant pressure water injection and pressure-swing water injection.The experimental progresses were recorded and the pictures were taken.The distribution modes of micro-remaining oil in different types of lithof... |
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| Keywords: | fan delta lithofacies unit micro-remaining oil photo lithography model image analysis |
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