煤岩与泥页岩对甲烷吸附特征的对比研究

发布时间：2018-01-09 22:20

本文关键词：煤岩与泥页岩对甲烷吸附特征的对比研究　出处：《中国石油和化工标准与质量》2016年23期 　论文类型：期刊论文

更多相关文章： 泥页岩 煤岩 吸附特征 等温吸附 TOC

【摘要】：利用煤岩的吸附特征可以评价煤储层物性及可采资源量,对比分析煤岩和泥页岩的吸附特征对泥页岩的开发具有十分重要的指导意义。通过比较不同实验温度下煤岩和泥页岩的吸附特征,发现随着温度升高,煤岩和页岩的V_L逐渐降低的,页岩的V_L变化更加明显,说明温度对泥页岩吸附量的影响更加大;对比煤岩和泥页岩的吸附时间发现泥页岩的吸附时间较短,很快能达到吸附平衡,煤岩的吸附时间相对较长;研究还得出随着有机质含量的增加,煤岩的p_L值逐渐增加,页岩的V_L、p_L逐渐增大;随着Ro的增大,煤岩的V_L值逐渐增大,但是p_L值是逐渐降低的,泥页岩的V_L值、p_L值随Ro的增大均呈降低趋势。
[Abstract]:The physical properties and recoverable resources of coal reservoir can be evaluated by using the adsorption characteristics of coal and rock. Comparative analysis of the adsorption characteristics of coal and shale has a very important guiding significance for the development of shale. By comparing the adsorption characteristics of coal and shale at different experimental temperatures, it is found that the adsorption characteristics increase with the increase of temperature. As the VL of coal and shale decreases gradually, the variation of VL in shale is more obvious, which indicates that the influence of temperature on shale adsorption is greater. Compared with the adsorption time of coal and shale, it is found that the adsorption time of shale is shorter, and the adsorption equilibrium can be achieved quickly, and the adsorption time of coal and shale is relatively long. It is also found that with the increase of the content of organic matter, the value of P _ L of coal and shale increases gradually, and the value of VL _ L of shale increases gradually. With the increase of Ro, the VL value of coal and rock increases gradually, but the value of P _ S _ L decreases gradually, and the value of V _ L and P _ L of shale decreases with the increase of Ro.
【作者单位】：中国石油化工股份有限公司华东油气分公司勘探开发研究院;中国石油大学(华东);
【分类号】：P618.13
【正文快照】： 0引言据2000年全国煤层气资源评价结果,我国埋深2 000 m以浅的煤层气资源量为31.46×1 012 m3;我国各地质时期页岩分布广泛,资源总量可以达100×1 012 m3,相当于常规天然气量的两倍。目前国内对煤层气吸附特征的研究很多,关于页岩气吸附特征的研究则比较少见。本文根据煤岩和

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