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王圣柱. 复杂构造区不同岩相页岩油散失量研究——以准噶尔盆地博格达地区中二叠统芦草沟组为例[J]. 科学技术与工程, 2020, 20(35): 14483-14491.
王圣柱.Quantitative Characterization of Shale Oil Preservation Coefficient of Different Evaluation Units in Complex Structural Area: A Case Study of the Middle Permian Lucaogou Formation in Bogda Area of Junggar Basin[J].Science Technology and Engineering,2020,20(35):14483-14491.
复杂构造区不同岩相页岩油散失量研究——以准噶尔盆地博格达地区中二叠统芦草沟组为例
Quantitative Characterization of Shale Oil Preservation Coefficient of Different Evaluation Units in Complex Structural Area: A Case Study of the Middle Permian Lucaogou Formation in Bogda Area of Junggar Basin
投稿时间:2019-10-19  修订日期:2020-08-28
DOI:
中文关键词:  准噶尔盆地  博格达山前带  芦草沟组  页岩油  散失量  评价单元  保存系数
英文关键词:Junggar basin  Bogda piedmont belt  Lucaogou Formation  shale oil  loss amount  evaluation unit  preservation coefficient
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
  
作者单位
王圣柱 中石化胜利油田分公司勘探开发研究院 山东 东营 257015
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中文摘要:
      页岩油散失是叠合改造盆地页岩油资源评价中的薄弱环节。保存条件对页岩油散失的影响及散失量表征,对于复杂构造区的“残留”页岩油资源科学评价具有重要的现实意义。为此,以准噶尔盆地博格达地区中二叠统芦草沟组为例,基于大量露头和钻井样品薄片鉴定、X-射线衍射全岩矿物分析、场发射扫描电镜、有机碳含量TOC、岩石热解S1和氯仿沥青“A”抽提等测试数据,在岩相类型和保存评价单元划分的基础上,建立不同评价单元、不同岩相的有机质丰度与含油率关系模型,实现页岩油散失量的量化表征,为残留页岩油资源量科学评价奠定基础。结果表明:①博格达地区芦草沟组表现为陆源碎屑组分和碳酸盐组分混合沉积特点,发育基质型和夹层型2类10余种岩相类型,可划分出凹陷区、构造稳定区、冲断改造区和地表出露区4类保存评价单元;②保存条件、储集空间类型及孔隙结构控制了不同岩相岩石的含油性差异,随构造变形强度的增强,保存条件变差,岩石的含油性整体呈减小趋势,基质型岩相富含有机质,有机碳含量与可动烃含量呈幂函数关系,夹层型岩相以外来烃充注为主,有机碳含量与可动烃含量呈线性关系;③建立了不同保存评价单元基质型和夹层型页岩油保存系数相对权重量化赋值模型,实现了页岩油散失量的量化表征,为复杂构造区残留页岩油资源评价提供了一种新的思路方法。
英文摘要:
      The loss of shale oil is a weak link in the evaluation of shale oil resources in superimposed reconstruction basin. The influence of preservation conditions on shale oil loss and quantitative characterization of loss amount have important practical significance for scientific evaluation of "residual" shale oil resources in complex structural areas. Therefore,taking the shale oil of the middle Permian Lucaogou Formation in Bogda area of Junggar basin as an example,based on a large number of outcrop and drilling sample thin section identification,X-ray diffraction whole rock mineral analysis,field emission scanning electron microscope,TOC,rock pyrolysis S1 and chloroform asphalt "A" extraction test data,on the basis of lithofacies type and preservation evaluation unit division,the relationship model between organic matter abundance and oil content of different evaluation units and different lithofacies is established,which realizes quantitative characterization of shale oil loss and lays a foundation for scientific evaluation of residual shale oil resources.The research shows that:①Lucaogou Formation in Bogda area is characterized by mixed deposition of terrigenous clastic components and carbonate components. There are more than 10 kinds of lithofacies types,including matrix type and interlayer type,which can be divided into 4 types of preservation evaluation units:sag area,structural stability area,thrust modification area and surface outcropping area;②Preservation conditions,reservoir space type and pore structure control the oil-bearing difference of different lithofacies rocks. With the increase of structural deformation strength,preservation conditions become worse,and the oil-bearing property of rocks shows a decreasing trend as a whole. Matrix lithofacies is rich in organic matter,and organic carbon content shows a power function relationship with movable hydrocarbon content. Hydrocarbon from interlayer lithofacies is mainly filled,while organic carbon content shows a linear relationship with movable hydrocarbon content.③A quantitative evaluation model for the relative weight of preservation coefficients of matrix type and interlayer type shale oil with different preservation evaluation units is established,which realizes the quantitative characterization of shale oil loss and provides a new way of thinking for the evaluation of residual shale oil resources in complex structural areas.
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