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致密储层样品体积测量对孔隙度误差的影响

陈思宇 田华 柳少波 李才喜 郝加庆 郑永平

陈思宇, 田华, 柳少波, 李才喜, 郝加庆, 郑永平. 致密储层样品体积测量对孔隙度误差的影响[J]. 石油实验地质, 2016, 38(6): 850-856. doi: 10.11781/sysydz201606850
引用本文: 陈思宇, 田华, 柳少波, 李才喜, 郝加庆, 郑永平. 致密储层样品体积测量对孔隙度误差的影响[J]. 石油实验地质, 2016, 38(6): 850-856. doi: 10.11781/sysydz201606850
Chen Siyu, Tian Hua, Liu Shaobo, Li Caixi, Hao Jiaqing, Zheng Yongping. Influence of bulk volume measurement on porosity error in tight reservoir core plug analysis[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2016, 38(6): 850-856. doi: 10.11781/sysydz201606850
Citation: Chen Siyu, Tian Hua, Liu Shaobo, Li Caixi, Hao Jiaqing, Zheng Yongping. Influence of bulk volume measurement on porosity error in tight reservoir core plug analysis[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2016, 38(6): 850-856. doi: 10.11781/sysydz201606850

致密储层样品体积测量对孔隙度误差的影响

doi: 10.11781/sysydz201606850
基金项目: 中国石油天然气股份有限公司科技攻关项目(2014A-0214,2014E-3209)和国家重大科学仪器设备开发专项(2013YQ17046305)资助。
详细信息
    作者简介:

    陈思宇(1995-),女,数学与应用数学专业。E-mail:398018114@qq.com。

    通讯作者:

    柳少波(1967-),男,教授级高级工程师,从事油气成藏研究。E-mail:lsb@petrochina.com.cn。

  • 中图分类号: TE122.23

Influence of bulk volume measurement on porosity error in tight reservoir core plug analysis

  • 摘要: 非常规油气致密储层孔隙度较低,一般小于10%,页岩储层甚至小于5%,常规方法对这类岩石样品孔隙度测定误差近来受到关注。针对常用的孔隙度测量方法(氦气注入法),对致密储层和常规储层样品建立了孔隙度测量误差计算数学模型,统计样品体积测量的误差来源和误差限,结合数学模型和统计结果,确定孔隙度误差限。研究得出以下结论:①采用游标卡尺测量的致密储层孔隙度绝对偏差为0.59%~2.47%,高精度三维扫描方法孔隙度测量绝对偏差可以减小到0.38%~1.04%,与常规储层不同,致密储层需提高孔隙度测试精度并进行误差分析;②不同精度的测量方法均很难达到行业标准规定(孔隙度绝对偏差小于0.5%),建议将孔隙度误差质量控制标准降低,即孔隙度绝对偏差放宽到小于1%,并给出了相应的体积测量误差要求;③孔隙度测量误差与样品长度成反比,为了提高测量精度,样品长度应尽量大于3 cm。

     

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出版历程
  • 收稿日期:  2016-06-17
  • 修回日期:  2016-10-20
  • 刊出日期:  2016-11-28

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