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首页> 外文会议>International Petroleum Technology Conference >Accurate 3D Seismic Interpretation of Large Braided Delta Reservoir and Outcrop Analogs in Northwest China
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Accurate 3D Seismic Interpretation of Large Braided Delta Reservoir and Outcrop Analogs in Northwest China

机译：西北地区大型编织三角洲水库和露头类似物的准确震探

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This paper presents a first discovered braided delta images (area of 562. 5 square kilometers, depth more than 3400 meters) with perfect river channels by accurate 3D seismic interpretation in the hinterland region of JR basin in northwest china. We can clearly identify micro facies like the main channels in the delta plain, underwater distributary channels in the delta front, mouth bar and sheet sand from the very fine 3D seismic images. Methods are discussed for identifying and dividing the features of braided delta sediments, using sequence stratigraphy, well log characteristics, core observation, 3D seismic data and outcrop analogs. The most effective and visual methods to reveal the characteristics of this special geological body are 3D seismic interpretation and outcrop analogs. Based on high-resolution sequence stratigraphic framework and well drilling, a work program focused on the fine description of this large braided delta reservoir has integrated accurate 3D seismic interpretation and outcrop analogs, which include: synthetically seismic attribute analysis, spectrum analysis, seismic waveform classification display, 3D coherency interpretation, logging constrained seismic inversion, 3D visualization Interpretation and outcrop studies. This method is a key to do a multi-angle research, and to find out the distribution law of favorable sedimentary facies belt. Matching the modern outcrop sedimentary observation, accurately identify geophysical response of special geological body from 3D seismic images has greatly promoted present oil exploration. The high quality of this complete braided delta images will not only provide a new typical braided delta geologic model for geologists to do deep studies, but also be very useful to further develop the similar reservoir at home and abroad.
机译：本文介绍了首次发现的编织三角洲图像（面积562.5平方公里，深度超过3400米），通过在中国西北部JR盆地的Hinterland地区精确地震诠释。我们可以清楚地识别像三角洲平原的主频道，如凌光普通，嘴巴和纸张砂中的水下分销通道，从非常精细的3D地震图像中识别了Δ平原的主要分配通道。讨论了使用序列地层，井对数特征，核心观察，3D地震数据和露头类似物识别和划分编织三角洲沉积物的特征的方法。揭示这种特殊地质体的特征的最有效和可视化方法是3D地震解释和露头类似物。基于高分辨率序列地层框架和钻井井，一个工作程集中在这个大型编织达到储层的精细描述上，具有综合准确的3D地震解释和露出类似物，包括：综合地震属性分析，频谱分析，地震波形分类显示，3D一致性解释，记录受限地震反演，3D可视化解释和露出研究。这种方法是做多角度研究的关键，并找出有利沉积相带的分配定律。匹配现代露头沉积观察，准确地识别特殊地质体的地球物理反应从3D地震图像大大促进了现有的石油勘探。这种完整编织的三角洲图像的高质量将不仅为地质学家提供了一个新的典型编织三角洲地质模型，可以做深刻的研究，也非常有用，可以在国内外进一步开发类似的水库。

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