文章摘要
鄂尔多斯盆地山庄地区长82储层非均质性研究
Study on the Heterogeneity of the Chang 82 Reservoir in the Shanzhuang Area of the Ordos Basin
投稿时间:2022-06-27  修订日期:2022-06-27
DOI:
中文关键词: 储层非均质性  长82  山庄地区  鄂尔多斯盆地
英文关键词: reservoir heterogeneity, Chang 82, Shanzhuang area, Ordos Basin
基金项目:国家科技重大专项“CO2捕集、驱油与埋存技术示范工程”
作者单位邮编
雷宁 西安石油大学 710065
肖玲 西安石油大学 710065
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中文摘要:
      本文通过分析鄂尔多斯盆地山庄地区长82储层岩心观察资料、物性测试分析及测井数据等资料,对研究区长82储层的层内、层间和平面非均质性进行精细研究。研究结果表明:层内非均质性在粒度颗粒大小、渗透率、夹层分布的影响下呈中等-较强的非均质性,垂向砂体韵律特征以复合韵律为主,局部地区表现出较强的非均质性;长822的夹层频率、密度和变异系数、突进系数、级差及均质系数均大于长821,层内非均质性特征更为显著。受隔层广泛发育的影响,长821层间非均质性较强。平面上,长822砂体连通性更差,砂体宽度及物性变化较大,非均质性较强,其剩余油多分布在砂体两侧物性较差的部位。填隙物的后期发育使孔隙结构特征较为复杂,增强了储层的非均质性,进而影响了剩余油的分布规律。非均质性的研究为剩余油的分布状况及后续的勘探开发提供了有利的地质依据。
英文摘要:
      Through the analysis of core observation data, physical property test analysis and logging data of The Chang82 reservoir in the Shanzhuang area of the Ordos Basin, the intra-layer, interlayer and planar heterogeneity of the Chang82 reservoir in the Study Area was carefully studied. The results show that the intralayer heterogeneity is medium-strong under the influence of particle size, permeability and mezzanine distribution, and the prosthesis characteristics of vertical sand are mainly composite prosody, and the local areas show strong heterogeneity; the interlayer frequency, density and variation coefficient, penetration coefficient, step difference and homogeneous coefficient of long 822 are greater than that of long 821, and the heterogeneity characteristics of intralayer are more prominent. Affected by the extensive development of the septum, the heterogeneity between the long 821 layers is strong. On the plane, the connectivity of the long 822 sand body is worse, the width and physical properties of the sand body change greatly, the heterogeneity is strong, and the remaining oil is mostly distributed in the parts with poor physical properties on both sides of the sand body. The later development of the filler makes the pore structure characteristics more complex, enhances the heterogeneity of the reservoir, and then affects the distribution law of the remaining oil. The study of heterogeneity provides a favorable geological basis for the distribution of residual oil and subsequent exploration and development.
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