鄂尔多斯盆地延长组长<sub>7</sub>页岩层段岩石热导率特征及启示

崔景伟; 侯连华; 朱如凯; 李士祥; 吴松涛

doi:10.11781/sysydz201902280

鄂尔多斯盆地延长组长₇页岩层段岩石热导率特征及启示

doi: 10.11781/sysydz201902280

1. 中国石油勘探开发研究院, 北京 100083;
2. 中国石油长庆油田公司勘探开发研究院, 西安 710018

基金项目:

国家重点基础研究发展计划（973计划）"中国陆相致密油（页岩油）形成机理与富集规律"（2014CB239000）资助。

详细信息

作者简介:
崔景伟(1980-),男,博士,高级工程师,从事非常规油气地质和油气成藏地化研究。E-mail:cuijingwei@petrochina.com.cn。

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出版历程
- 收稿日期: 2018-11-21
- 修回日期: 2019-02-15
- 刊出日期: 2019-03-28

Thermal conductivity properties of rocks in the Chang 7 shale strata in the Ordos Basin and its implications for shale oil in situ development

1. Research Institute of Petroleum Exploration and Development, CNPC, Beijing 100083, China;
2. Research Institute of Petroleum Exploration and Development, Changqing Oilfield, CNPC, Xi'an, Shaanxi 710018, China

摘要

摘要: 原位转化技术是中国陆相页岩油攻关的重点领域，鄂尔多斯盆地三叠系延长组长₇页岩层段岩石热物性，特别是高温热物性研究尚处空白，严重制约原位转化工程优化和可行性评价。选取长₇页岩发育区内多口取心井新鲜样品，利用热导仪、差示扫描量热仪和热膨胀仪，获得长₇页岩层段泥质粉砂岩、凝灰岩、泥岩和页岩的热扩散系数、比热容、热膨胀系数以及热导率参数。长₇页岩层段不同岩性的岩石热扩散系数和热导率存在差异，且随砂质含量降低而降低，即泥质粉砂岩>凝灰岩>泥岩>页岩。热扩散系数和热导率具有各向异性，水平方向是垂直方向的1~3.5倍，且其差异随温度升高而增大。随温度升高，岩石热扩散系数呈降低趋势、比热容呈增大趋势、热导率呈先降低后增大趋势。页岩热物性的各向异性最强，各向异性是岩石非均质性的体现，与微观纹层相关；砂岩各向异性可能与岩石不同方向上渗透率相关。
- 热物性 /
- 原位转化技术 /
- 页岩油，长₇油层组 /
- 延长组 /
- 三叠系 /
- 鄂尔多斯盆地
Abstract: In situ conversion is a key area of China’s continental shale oil research. The thermal properties of rocks in the seventh member of the Triassic Yanchang Formation (Chang 7) in the Ordos Basin, especially the high temperature thermal properties are still unknown, which seriously restricts the optimization and feasibility evaluation of in situ conversion. Some fresh samples were collected from the Chang 7 shale layer and tested with a quick thermal conductivity meter, differential scanning calorimetry and thermal expansion instrument to obtain the thermal diffusivity, specific heat capacity, thermal expansion coefficient, and thermal conductivity parameter of muddy siltstones, tuffs, mudstones and shale. The thermal diffusivity and thermal conductivity of rocks with different lithologies in the Chang 7 member are different, and decrease with the decrease of sandy content, namely argillaceous siltstones > tuffstones > mudstones > shale. The thermal diffusivity and thermal conductivity have anisotropy, and the horizontal direction is 1 to 3.5 times the vertical direction, and the difference increases as the temperature increases. With the increase of temperature, the thermal diffusivity of rock decreases, the specific heat capacity of rocks increases and the thermal conductivity first decreases and then increases. The anisotropy of shale thermal properties is the strongest, which is a manifestation of rock heterogeneity, and is related to microscopic strata. The sandstone anisotropy may be related to permeability in different directions of rock.
- thermal properties /
- in situ conversion technology /
- shale oil, Chang 7 oil layer /
- Yanchang Formation /
- Triassic /
- Ordos Basin

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鄂尔多斯盆地延长组长₇页岩层段岩石热导率特征及启示

doi: 10.11781/sysydz201902280

作者简介:
崔景伟(1980-),男,博士,高级工程师,从事非常规油气地质和油气成藏地化研究。E-mail:cuijingwei@petrochina.com.cn。

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Thermal conductivity properties of rocks in the Chang 7 shale strata in the Ordos Basin and its implications for shale oil in situ development

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鄂尔多斯盆地延长组长7页岩层段岩石热导率特征及启示

doi: 10.11781/sysydz201902280

作者简介: 崔景伟(1980-),男,博士,高级工程师,从事非常规油气地质和油气成藏地化研究。E-mail:cuijingwei@petrochina.com.cn。

计量

出版历程

Thermal conductivity properties of rocks in the Chang 7 shale strata in the Ordos Basin and its implications for shale oil in situ development

计量

出版历程

目录

鄂尔多斯盆地延长组长₇页岩层段岩石热导率特征及启示

作者简介:
崔景伟(1980-),男,博士,高级工程师,从事非常规油气地质和油气成藏地化研究。E-mail:cuijingwei@petrochina.com.cn。