苏里格气田盒8段河道砂体储层地震预测分析
发布时间：2018-10-21 07:30
【摘要】：苏里格气田位于鄂尔多斯盆地中北部,是迄今为止我国规模最大的砂岩岩性气藏。该气藏分布主要受砂岩的横向展布和储集体物性变化控制,受构造影响不明显,有效储集层为辫状河粗砂岩沉积,非均质性强,连续性差,开发难度较大,急需建立一套适合该区块的河流相含气砂体预测思路和技术手段,为苏里格气田开发提供强有力的技术支持。 本文以苏里格地区河流相储集层预测研究为例,首先分析了盒8段储层的基本地质特征、测井响应特征、地球物理特征等,然后在高精度地震解释的基础上,综合运用钻测井、地质、地震资料,建立波形特征分类模板、优选横向高分辨率的地震属性分析技术,利用连续的地层切片展示出不同沉积时期河道的形成、变迁以及消失的过程,进行物源方向预测和岩性识别；利用基于主组分的地震相分析技术,通过对地震道的波形特征进行分析,建立地震信号的总体变化以及这种变化的分布特征与沉积相的对应关系,获得了地震相的分布,地震相分析的结果可以预测出主河道的平面展布和砂体分布；利用地质统计学反演与储层及含气性之间的关系,对反演结果中的不确定性进行试验分析,有效刻画了储层的展布规律。 本次研究利用地质、钻测井、地震等资料,综合运用属性分析、地震相及反演技术,对苏里格气田59区盒8段储层进行综合预测,总结出一套切实可行的河道砂体储集层综合预测方法,为下一步井位部署和勘探开发提供参考。
[Abstract]:Sulige gas field is the largest sandstone lithologic gas reservoir in China, which is located in the central and northern part of Ordos Basin. The distribution of the gas reservoir is mainly controlled by the lateral distribution of sandstone and the change of reservoir physical property, and is not obviously affected by structure. The effective reservoir is composed of braided river coarse sandstone deposit, strong heterogeneity, poor continuity and great difficulty in development. There is an urgent need to establish a set of prediction ideas and technical means of fluvial gas-bearing sand bodies suitable for the block, which will provide strong technical support for the development of Sulige gas field. Taking the prediction of fluvial facies reservoir in Sulige area as an example, this paper analyzes the basic geological characteristics, logging response characteristics, geophysical characteristics and so on of the reservoir in member 8. Then, on the basis of high-precision seismic interpretation, drilling logging is used comprehensively. Geology, seismic data, establishment of waveform feature classification template, selection of lateral and high-resolution seismic attribute analysis techniques, use of continuous stratigraphic slices to show the formation, evolution and disappearance of river channels in different sedimentary periods. Source direction prediction and lithology identification are carried out, and seismic phase analysis technology based on principal component is used to analyze the waveform characteristics of seismic trace. The distribution of seismic facies is obtained by establishing the general variation of seismic signal and the corresponding relation between the distribution characteristics of this variation and sedimentary facies. The results of seismic facies analysis can predict the plane distribution and sand body distribution of the main channel. Based on the relationship between geostatistical inversion and reservoir and gas-bearing property, the uncertainty of inversion results is analyzed experimentally and the distribution of reservoir is described effectively. In this study, using geological, drilling and logging data, seismic data, attribute analysis, seismic facies and inversion techniques, a comprehensive prediction of the reservoir in section 8 of area 59 of Sulige gas field was carried out. A set of feasible comprehensive prediction method of channel sand body reservoir is summarized, which provides a reference for the next well location deployment and exploration and development.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P631.4;P618.13
[Abstract]:Sulige gas field is the largest sandstone lithologic gas reservoir in China, which is located in the central and northern part of Ordos Basin. The distribution of the gas reservoir is mainly controlled by the lateral distribution of sandstone and the change of reservoir physical property, and is not obviously affected by structure. The effective reservoir is composed of braided river coarse sandstone deposit, strong heterogeneity, poor continuity and great difficulty in development. There is an urgent need to establish a set of prediction ideas and technical means of fluvial gas-bearing sand bodies suitable for the block, which will provide strong technical support for the development of Sulige gas field. Taking the prediction of fluvial facies reservoir in Sulige area as an example, this paper analyzes the basic geological characteristics, logging response characteristics, geophysical characteristics and so on of the reservoir in member 8. Then, on the basis of high-precision seismic interpretation, drilling logging is used comprehensively. Geology, seismic data, establishment of waveform feature classification template, selection of lateral and high-resolution seismic attribute analysis techniques, use of continuous stratigraphic slices to show the formation, evolution and disappearance of river channels in different sedimentary periods. Source direction prediction and lithology identification are carried out, and seismic phase analysis technology based on principal component is used to analyze the waveform characteristics of seismic trace. The distribution of seismic facies is obtained by establishing the general variation of seismic signal and the corresponding relation between the distribution characteristics of this variation and sedimentary facies. The results of seismic facies analysis can predict the plane distribution and sand body distribution of the main channel. Based on the relationship between geostatistical inversion and reservoir and gas-bearing property, the uncertainty of inversion results is analyzed experimentally and the distribution of reservoir is described effectively. In this study, using geological, drilling and logging data, seismic data, attribute analysis, seismic facies and inversion techniques, a comprehensive prediction of the reservoir in section 8 of area 59 of Sulige gas field was carried out. A set of feasible comprehensive prediction method of channel sand body reservoir is summarized, which provides a reference for the next well location deployment and exploration and development.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P631.4;P618.13
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