沙特阿拉伯Shaybah油田Shu’aiba组碳酸盐岩沉积正演模拟研究

发布时间：2018-06-30 10:20

本文选题：碳酸盐岩 + 沉积正演模拟　；参考：《中国地质大学(北京)》2017年硕士论文

【摘要】：已有的传统的基于地质统计学理论的建模方法能够一定程度表征储层质量。但是由于资料的限制,以及模拟方法对碳酸盐岩沉积地质过程因素考虑不足,所得到的模拟结果无法响应控制储层质量的关键影响因素,如可容空间、沉积物供给和盆地古地形等。而基于沉积过程的建模方法能够考虑海底(或湖底)的地形、重力、摩擦力、动力学、洋流、沉积和侵蚀速率,同时还综合了随机的成分以便考虑储层的不确定性,所以对储层质量的表征更能得到地质人员的认可。随着对碳酸盐岩沉积过程的认识不断加深,碳酸盐岩的正演模拟为精确定量模拟碳酸盐储层的非均质情况提供了新的方法。许多地层正演数值模型已经成功的模拟了大尺度的碳酸盐地层格架,这些模型成功的解释了各种各样的碳酸盐地层的形成机理。本文在对正演模拟原理和方法进行充分研究的基础上,选取Dionisos作为模拟工具,Shaybah油田Shu’aiba组碳酸盐地层作为研究区,将基于沉积过程的正演模拟方法应用于碳酸盐岩地层的模拟,针对如何将地质分析与沉积正演二者相结合对研究区的沉积过程模拟进行了探索,通过与条件数据比较,模拟结果完全体现了研究区的沉积概念及实现了硬数据的条件化,大大降低了模型的不确定性,为后期对研究区储层质量的预测与评价提供了坚实的基础。本文以井资料作为控制条件,通过设置碳酸盐岩产率的多控制变量参数、海平面升降、海平面变化、波浪作用等参数,模拟建立了碳酸盐岩模型,刻画了沉积相平面分布范围和纵向的非均质性,有效指导了储层地质研究和后期钻井部署。
[Abstract]:The traditional modeling methods based on geostatistics theory can represent reservoir quality to some extent. However, due to the limitation of the data and the insufficient consideration of the sedimentary geological process of carbonate rock by the simulation method, the simulation results obtained can not respond to the key factors that control the reservoir quality, such as the accommodation space. Sediment supply and basin paleotopography. The modeling method based on the deposition process can take into account the topography, gravity, friction, dynamics, ocean current, deposition and erosion rate of the seabed (or lake bottom), and also combine the random composition to take into account the uncertainty of the reservoir. Therefore, the characterization of reservoir quality can be more recognized by geological personnel. With the deepening of the understanding of carbonate sedimentary process, the forward modeling of carbonate provides a new method for accurate quantitative simulation of carbonate reservoir heterogeneity. Many stratigraphic forward numerical models have successfully simulated large-scale carbonate stratigraphic framework. These models have successfully explained the formation mechanism of various carbonate strata. Based on the full study of forward modeling principle and method, this paper selects Dionisos as simulation tool to study carbonate formation of Shuanaiba formation in Shaybah Oilfield. In this paper, the forward modeling method based on sedimentary process is applied to the simulation of carbonate strata. How to combine geological analysis and sedimentary forward modeling to simulate the sedimentary process in the study area is explored, and the results are compared with the conditional data. The simulation results fully reflect the sedimentary concept of the study area and realize the condition of hard data, greatly reduce the uncertainty of the model, and provide a solid foundation for the prediction and evaluation of reservoir quality in the later stage of the study area. Taking well data as control condition, the carbonate rock model is established by setting up parameters of multiple control variables of carbonate production rate, sea level rise and fall, sea level change, wave action and so on. The plane distribution range and longitudinal heterogeneity of sedimentary facies are described, which can effectively guide reservoir geological research and late drilling deployment.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.13

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