轮南2油田JIV油藏水驱实验及微观剩余油分布特征

发布时间：2018-01-16 18:18

本文关键词：轮南2油田JIV油藏水驱实验及微观剩余油分布特征　出处：《新疆石油地质》2017年01期 　论文类型：期刊论文

【摘要】：根据铸体薄片、常规物性、扫描电镜、压汞等分析结果,对塔里木盆地轮南2油田下侏罗统阳霞组JIV油藏储集层孔隙结构类型进行了划分,选取主要的4类孔隙结构储集层进行砂岩岩心微观水驱实验。实验结果表明,不同孔隙结构储集层渗流特征不同,细喉低渗类和微细喉特低渗类储集层以指状渗流为主,较细喉高渗类储集层为指状—网状渗流,细喉中渗类储集层为网状—均匀渗流;水驱后微观剩余油以绕流形成的片状和簇状分布为主,其次为柱状、角状、膜状等分散分布。通过分析不同孔隙结构类型储集层水驱油微观渗流特征,为油田有效合理开发提供依据。
[Abstract]:According to the results of thin casting, conventional physical properties, scanning electron microscope and mercury injection, the pore structure types of JIV reservoir of Lower Jurassic Yangxia formation in Lunnan 2 oilfield of Tarim Basin are classified. Four main types of pore structure reservoirs are selected to carry out microscopic water flooding experiments in sandstone cores. The experimental results show that the percolation characteristics of different pore structure reservoirs are different. The microlaryngeal low permeability reservoirs are mainly finger percolation, the fine throat hyperosmotic reservoirs are finger-reticular percolation, and the fine throat percolation reservoirs are reticular-uniform percolation. After water flooding, the microcosmic residual oil is mainly distributed in flakes and clusters around the flow, followed by columnar, angular and membrane-like distribution. The microscopic seepage characteristics of water-driven reservoirs with different pore structure types are analyzed. To provide the basis for the effective and reasonable development of the oil field.
【作者单位】：中国石油塔里木油田分公司勘探开发研究院;中国石油塔里木油田分公司开发处;
【分类号】：TE327;TE312
【正文快照】： 塔里木盆地轮南2油田阳霞组JIV油藏于1988年发现,2008年进入二次开发以来,80%以上的新井水淹,油藏采收率仅为24.5%.因此,查明储集层微观驱替机制、渗流机理及剩余油分布特征具有重要意义。轮南2油田JIV油藏自投入开发以来,对微观剩余油分布的研究甚少。本文通过砂岩岩心微观模

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