基于地震沉积学的含煤岩系沉积相及其演化分析
发布时间：2018-11-25 12:09
【摘要】：为了探究含煤岩系聚煤前后沉积相及其演化特征,运用地震沉积学解释技术,通过基于最小等时单元地层切片的地震属性优选法及单井层序地层的岩性与微相划分标定法,建立了敏感属性与岩性、沉积相的对应关系,对沁水盆地中裕地区山西组2号煤层聚煤前后沉积相及其演化进行了研究。研究结果表明:中期旋回作为该区的最小等时研究单元,以短期旋回作为控制进行切片可以研究四-五级序界面内的沉积现象;均方根振幅属性可以作为沉积相平面展布特征预测的敏感属性;山西组2号煤层聚煤前为下三角洲沉积环境,聚煤后为上三角洲沉积环境,并识别出了分流河道、天然堤、泛滥盆地和泥炭沼泽等沉积微相及其空间分布。
[Abstract]:In order to investigate the sedimentary facies and their evolution characteristics before and after coal accumulation in coal-bearing rock series, seismic sedimentological interpretation technique is used to optimize seismic attributes based on minimum isochronous unit stratigraphic slices and to calibrate lithology and microfacies of single-well sequence stratigraphy. The relationship between sensitive attributes, lithology and sedimentary facies is established, and the sedimentary facies and their evolution before and after coal accumulation in Shanxi formation No. 2 in Zhongyu formation of Qinshui Basin are studied. The results show that the intermediate cycle is the minimum isochronous study unit in this area, and the deposition phenomenon in the four to five order interface can be studied by using the short cycle as the control slice. The RMS amplitude attribute can be used as a sensitive attribute to predict the distribution characteristics of sedimentary facies. The sedimentary microfacies and their spatial distribution of distributary channel, natural embankment, flood basin and peat swamp were identified in Shanxi formation No. 2 coal seam before coal accumulation and after coal accumulation as upper delta sedimentary environment.
【作者单位】： 太原理工大学矿业工程学院;煤与煤系气地质山西省重点实验室;山西山地物探技术有限公司;
【基金】：山西省煤基重点科技攻关资助项目(MQ2014-01)
【分类号】：P618.11;P631.4
本文编号：2356056
[Abstract]:In order to investigate the sedimentary facies and their evolution characteristics before and after coal accumulation in coal-bearing rock series, seismic sedimentological interpretation technique is used to optimize seismic attributes based on minimum isochronous unit stratigraphic slices and to calibrate lithology and microfacies of single-well sequence stratigraphy. The relationship between sensitive attributes, lithology and sedimentary facies is established, and the sedimentary facies and their evolution before and after coal accumulation in Shanxi formation No. 2 in Zhongyu formation of Qinshui Basin are studied. The results show that the intermediate cycle is the minimum isochronous study unit in this area, and the deposition phenomenon in the four to five order interface can be studied by using the short cycle as the control slice. The RMS amplitude attribute can be used as a sensitive attribute to predict the distribution characteristics of sedimentary facies. The sedimentary microfacies and their spatial distribution of distributary channel, natural embankment, flood basin and peat swamp were identified in Shanxi formation No. 2 coal seam before coal accumulation and after coal accumulation as upper delta sedimentary environment.
【作者单位】： 太原理工大学矿业工程学院;煤与煤系气地质山西省重点实验室;山西山地物探技术有限公司;
【基金】：山西省煤基重点科技攻关资助项目(MQ2014-01)
【分类号】：P618.11;P631.4
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1 杨德寿;王青平;童海奎;;青海聚乎更矿区侏罗纪含煤岩系沉积相研究[J];中国煤炭地质;2011年12期
，本文编号：2356056
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