紫金山北上古生界多类型储层三维地质建模及合采兼容性数值试验

发布时间：2018-03-23 10:32

本文选题：紫金山　切入点：上古生界　出处：《中国矿业大学》2017年硕士论文

【摘要】：多类型储层地质建模及合采兼容性数值试验,不仅能够直观准确的表达地质构造及储层参数空间信息,而且可为合采开发方案提供关键依据,从而确保多类型储层非常规天然气资源得到充分、合理的开发利用。本文在系统总结紫金山北上古生界多类型叠置非常规天然气储层和资源特征基础上,利用Petrel地质建模软件构建三维地质模型,采用Eclipse数值模拟软件开展多类型储层天然气合采兼容性数值试验,提出多储层合采初步选区、选层开发方案。结果显示,紫金山北区整体构造简单,广覆式生烃的煤系烃源岩与大面积分布的致密砂岩储集层、煤储层及泥页岩储层相互叠置,有利于煤层气、致密砂岩气和泥页岩气成藏;主力煤层厚度较大且分布稳定,含气量高,渗透性好,总体上处于略微欠压状态;致密砂岩储层广泛发育,空间连续性较好,含气饱和度较高,孔隙度较低,渗透率较高,储层压力系数变化不大,多数集中在0.6~1.1之间,以欠压为主,有常压储层发育;区内煤系泥页岩含气量极低,生产潜力小,煤层气与致密砂岩联合开发资源潜力较大。利用测井解释、地震解释及分层等数据,构建了多类型储层气藏三维精细地质模型,包括构造模型、岩相模型和相控属性模型,其准确性和精确度较高。首次构建了逐层叠加合采选区数值判别方法和评价界限,指出工区初步选区、选层开发方案:太原组砂岩整体单采、山西组煤层与石千峰组砂岩在工区西部均单采,其它采用合层开发。其中,适合合采层组合方式包括:上石盒子组砂岩-下石盒子组砂岩(A组合),位于工区整体区域;下石盒子组砂岩-山西组煤层(B组合),位于工区东南部分和西北部的大部分地区;石千峰组砂岩-上石盒子组砂岩-下石盒子组砂岩-山西组煤层(C组合),位于工区中东部区域。
[Abstract]:Multi-type reservoir geological modeling and compatibility numerical test not only can express geological structure and reservoir parameter spatial information intuitively and accurately, but also can provide the key basis for combined production development scheme. In order to ensure that the unconventional natural gas resources of multi-type reservoirs are fully and reasonably exploited and utilized, this paper systematically summarizes the multi-type superimposed unconventional natural gas reservoirs and resource characteristics of the Upper Paleozoic in the North Zijinshan area. Using Petrel geological modeling software to construct 3D geological model, using Eclipse numerical simulation software to carry out numerical test on compatibility of natural gas production of multiple types of reservoirs, and putting forward preliminary selection and development plan of multi-reservoir combined production. The results show that, The whole structure of Zijinshan North is simple, the coal-measure hydrocarbon source rock with wide overlying hydrocarbon generation type and the dense sandstone reservoir with large area distribution, coal reservoir and shale reservoir overlap each other, which is advantageous to the formation of coalbed methane, tight sandstone gas and shale gas reservoir. The main coal seams are of large thickness and stable distribution, high gas content, good permeability, and are in a slightly underpressure state on the whole; tight sandstone reservoirs are widely developed, with good spatial continuity, high gas saturation, low porosity and high permeability. The pressure coefficient of the reservoir has little change, most of them are between 0.6 and 1.1, mainly under pressure, with normal pressure reservoir developed, the gas content of coal shale in this area is very low, and the production potential is small. Based on the data of logging interpretation, seismic interpretation and stratification, 3D fine geological model of multi-type reservoir gas reservoir is constructed, including structural model, lithofacies model and facies control attribute model. The accuracy and accuracy of the method are high. For the first time, the numerical discrimination method and evaluation limit of superimposed combined mining area are constructed for the first time, and it is pointed out that the primary selection area and the development plan of the selected layer are as follows: the whole single production of the sandstone in Taiyuan formation. The coal seam of Shanxi formation and sandstone of Shiqianfeng formation are single mined in the western part of the work area, and the others are developed by combined strata. Among them, the suitable combination of combined strata includes: the sandstone of the upper Shihezi formation and the sandstone of the lower Shihezi formation, located in the whole area of the work area; The sandstone-Shanxi seam B assemblage of the Xiashihezi formation is located in the southeast part and the northwest part of the working area. Shiqianfeng sandstone-Shangshihezi sandstone-Xiashihezi sandstone-Shanxi coal seam C assemblage is located in the central and eastern part of the working area.
【学位授予单位】：中国矿业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.13

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