西加拿大盆地B区块致密砂岩储层三维地质模型研究

发布时间：2018-01-15 23:16

本文关键词：西加拿大盆地B区块致密砂岩储层三维地质模型研究　出处：《西安石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：B区块致密砂岩气藏位于西加拿大沉积盆地西部,目的层为三叠系下三叠统Upper Montney段含有机质的含泥钙质致密粉砂岩储层,该区目前处于开发初期。本区储层具有矿物组分复杂、物性差、单一常规测井曲线不能良好反映储层特征等特点,此外考虑到致密储层一般需实施大型水力压裂技术才能有效开发,故本文在对研究区进行沉积及构造特征分析、地层对比与划分、以及岩心测试、测井资料等综合分析的基础上,建立符合本区实际地质认识特点的储层孔隙度、渗透率、饱和度、TOC、吸附气含量、岩石脆性指数、地层地应力等7种测井解释模型,完成对致密砂岩储层在储集性能、烃源岩特征、压裂开发品质等方面的测井资料综合评价。以钻井地质分层数据为主要依据,建立Upper Montney段储层三维构造模型;以测井解释结果的多矿物相对含量为基础,建立岩相模型;在岩相模型的基础上,分别对各类储层参数测井解释结果进行分层分岩相的变差函数相关性分析,并应用序贯高斯模拟方法完成孔隙度、渗透率、饱和度、TOC、吸附气含量、岩石脆性指数等6种参数的储层三维属性建模,对各属性模型的空间展布特征进行表征。依据储层测井综合解释及三维地质建模研究结果,划分出孔隙度、渗透率、饱和度、吸附气含量、岩石脆性指数等5种参数的I、II、III类储层分类标准;分别对每类储层的上述5种属性模型进行叠加分析,对研究区目的层进行有利储层平面分布预测研究,并优选纵向有利层位,从而为后续的布井及水力压裂等开发工作提供一定参考依据。
[Abstract]:The tight sandstone gas reservoir in block B is located in the western part of western Canada sedimentary basin, and the target layer is a mud-calcareous siltstone reservoir with organic matter in Upper Montney member of Lower Triassic of Triassic. The reservoir in this area is in the early stage of development. The reservoir in this area is characterized by complex mineral components, poor physical properties, and the single conventional logging curve can not well reflect the reservoir characteristics. In addition, considering that large hydraulic fracturing technology is generally needed to develop compact reservoirs effectively, this paper analyzes sedimentary and structural characteristics, stratigraphic correlation and division, and core testing in the study area. On the basis of comprehensive analysis of logging data, reservoir porosity, permeability, saturation, adsorption gas content and rock brittleness index are established in accordance with the actual geological characteristics of this area. The logging data of tight sandstone reservoir in reservoir performance, source rock characteristics, fracturing development quality and so on are evaluated by seven logging interpretation models, such as formation stress and so on. The main basis is drilling geological stratification data. Three-dimensional structural model of reservoir in Upper Montney member is established. The lithofacies model is established on the basis of the multi-mineral relative content of log interpretation results. On the basis of lithofacies model, the correlation analysis of variation function of stratified lithofacies is carried out on the results of log interpretation of various reservoir parameters, and the porosity, permeability and saturation are completed by using sequential Gaussian simulation method. TOC, adsorption gas content, rock brittleness index and other six parameters of reservoir 3D attribute modeling. According to the comprehensive interpretation of reservoir logging and the results of 3D geological modeling, the porosity, permeability, saturation and adsorption gas content are classified. Rock brittleness index and other 5 parameters are classified according to the class III reservoir classification criteria. The above five attribute models of each kind of reservoir are analyzed separately, and the favorable reservoir plane distribution prediction is carried out on the target layer in the study area, and the longitudinal favorable layer is selected. It can provide some reference for the following development work, such as well layout and hydraulic fracturing.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13;P628.3

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