ISSN 1673-8217 CN 41-1388/TE
主管:中国石油化工集团有限公司 主办:中国石油化工股份有限公司河南油田分公司
苏超. 2019: 南图尔盖盆地260D区块上侏罗统河道砂体识别. 石油地质与工程, 33(06): 5-8+14.
引用本文: 苏超. 2019: 南图尔盖盆地260D区块上侏罗统河道砂体识别. 石油地质与工程, 33(06): 5-8+14.
SU Chao. 2019: Identification of upper Jurassic channel sand bodies in block 260D of south Turgai basin. Petroleum Geology and Engineering, 33(06): 5-8+14.
Citation: SU Chao. 2019: Identification of upper Jurassic channel sand bodies in block 260D of south Turgai basin. Petroleum Geology and Engineering, 33(06): 5-8+14.

南图尔盖盆地260D区块上侏罗统河道砂体识别

Identification of upper Jurassic channel sand bodies in block 260D of south Turgai basin

  • 摘要: 南图尔盖盆地260D区块上侏罗统阿克萨布拉克组大套泥岩地层中广泛发育曲流河,并形成以河道砂体为储层的岩性油气藏。综合利用河道砂体的地震和测井响应特征,从纵向上识别出槽形、峡谷形和透镜状的河道砂体形态,其电阻率和自然电位表现出柱状、钟状和尖峰状的曲线特征。通过均方根振幅和总能量属性预测出河道在平面上相互交织的网状分布特征,并将这两种地震属性分配不同的权重系数进行比例融合,综合利用各自的优势,全面和准确地刻画河道砂体平面的展布特征。

     

    Abstract: Meandering rivers channel bodies are widely developed in a large set of mudstone strata of the upper Jurassic Aksabulake formation in block 260D of south Turgai basin, and the lithologic oil and gas reservoirs with channel sand bodies as reservoirs are formed. Through comprehensive utilization of seismic and logging response characteristics of river channels, channel shape, canyon shape and lenticular shape are identified longitudinally. The resistivity and natural potential of the channels show the characteristics of columnar, bell and spike curves. By means of root mean square amplitude and total energy attribute, the interwoven network distribution characteristics of river channel on the plane are predicted, the weight coefficients of these two seismic attributes are distributed in proportion, and their respective advantages are comprehensively utilized to achieve a comprehensive and accurate description of river channel plane distribution characteristics.

     

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