裂缝性致密砂岩储层裂缝孔隙度建模——以四川盆地平落坝构造须家河组二段储层为例

发布时间：2018-02-22 04:59

本文关键词： 致密砂岩蚂蚁体数据成像测井裂缝孔隙度建模　出处：《石油学报》2017年05期 　论文类型：期刊论文

【摘要】：裂缝性致密砂岩储层的非均质性突出,相对于沉积相变对储层所造成的影响,后期成岩与构造运动对储层的改造更重要,裂缝的发育特征常是影响这类储层有效性的关键因素。常规描述储层性质的孔隙度、渗透率参数难以确切描述该类储层的性质。在评价裂缝性致密砂岩储层时,将裂缝破碎带作为优质储层研究对象,以裂缝孔隙度作为储层评价关键参数,是研究裂缝性致密砂岩有效储层分布规律的重要途径。在裂缝孔隙度建模过程中,构造裂缝孔隙度的空间结构信息是建模的关键,在建立地震属性与裂缝的相关性基础之上,使用地震属性构造了裂缝孔隙度的空间结构参数。生产数据表明,地震分频属性能够在整体上指示裂缝孔隙度的平面分布特征,可以用来构造裂缝孔隙度的变差函数,但该属性不能定量给出裂缝孔隙度的空间分布特征,因此不能用于辅助参数进行协同计算。将地震蚂蚁体数据和通过成像测井校正的单井裂缝孔隙度解释数据共同作为模拟裂缝孔隙度模型的输入参数,使用协同建模的方法建立裂缝孔隙度的空间分布,从而定量评价了裂缝性致密砂岩储层裂缝孔隙度的空间展布规律,为数值模拟提供数据支持。
[Abstract]:The heterogeneity of fractured tight sandstone reservoir is prominent, and the late diagenesis and tectonic movement are more important to the reservoir reconstruction than the effect of sedimentary phase change on the reservoir. The characteristics of fracture development are often the key factors that affect the validity of this kind of reservoir. The porosity of reservoir property is usually described, the permeability parameter is difficult to describe exactly the property of this kind of reservoir, and when evaluating fractured tight sandstone reservoir, it is difficult to describe the property of this kind of reservoir. Taking fracture fracture zone as high quality reservoir research object and fracture porosity as the key parameter of reservoir evaluation is an important way to study effective reservoir distribution law of fractured tight sandstone. The spatial structure information of structural fracture porosity is the key to modeling. On the basis of establishing the correlation between seismic attributes and fractures, the spatial structural parameters of fracture porosity are constructed by seismic attributes. The seismic frequency division attribute can indicate the plane distribution characteristics of fracture porosity on the whole, and can be used to construct the variation function of fracture porosity, but this attribute can not quantitatively give the spatial distribution characteristics of fracture porosity. Therefore, the seismic ant body data and the single well fracture porosity interpretation data corrected by imaging logging are used as input parameters for simulating fracture porosity model. The spatial distribution of fracture porosity is established by using cooperative modeling method, and the spatial distribution of fracture porosity in fractured tight sandstone reservoir is quantitatively evaluated, which provides data support for numerical simulation.
【作者单位】：中国地质大学能源学院;中国地质大学非常规天然气地质评价与开发工程北京市重点实验室;中国石油西南油气田公司川西北气矿;北京恺标技术发展有限公司;中国石油化工股份有限公司河南油田分公司勘探开发研究院;
【基金】：国家重大科技专项(2017ZX05009-005) 北京市自然科学基金项目(No.3162026)资助
【分类号】：P618.13

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