鄂尔多斯盆地蟠龙油田长2储层物性主控因素分析 |
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引用本文: | 陈孝平,章爱成,罗小曼. 鄂尔多斯盆地蟠龙油田长2储层物性主控因素分析[J]. 内蒙古石油化工, 2009, 0(16): 140-143 |
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作者姓名: | 陈孝平 章爱成 罗小曼 |
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作者单位: | 延长油田股份有限公司蟠龙采油厂,陕西延安716000 |
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摘 要: | 通过对蟠龙油田长2砂岩的岩石学特征、孔隙类型、成岩作用及储层物性研究,其储层物性主要受沉积微相、成岩作用、裂缝发育程度与规模控制。辫状河河道砂坝中细—细砂岩具有较高的孔隙度和渗透率,天然堤粉细砂岩和细砂岩的孔隙度和渗透率较低;压实作用是导致砂岩孔隙丧失的主要原因;碳结作用进一步破坏孔隙度,碳酸盐是砂岩孔隙度丧失的主要胶结物;溶解作用是物性得到改善的重要途径;裂缝对砂岩渗透率的提高起了重要贡献。
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关 键 词: | 蟠龙油田 长2储层 成岩作用 储集物性 |
Major factors controlling reservoir-quality of Chang 2 Reservoir in Panlong oilfield,Ordos Basin |
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Affiliation: | Corporation of Yanchang oilfield Panlong;Yan'an 716000;Shanxi;China |
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Abstract: | Detailed studies on sedimentary micro-facies,pore-type,diagenesis and reservoir quality show that the reservoir quality is strongly controlled by the depositional micro-facies,diagenesis,development and dimension of fractures of sandstones.The medium to coarser-grained and fine-grained sandstones in the braided facies are of high porosity and permeability;while sandstones with fine grained and very fine-grained in the meandering micro-facies are of relatively lower porosity and permeability.The mechanical c... |
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Keywords: | Panlong oilfield Chang 2 reservoir Diagenesis Reservoir-quality |
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