新疆油田重32区块双水平井SAGD稠油开发注采参数优化研究

发布时间：2018-05-07 08:24

本文选题：SAGD + 双水平井　；参考：《东北石油大学》2017年硕士论文

【摘要】：对于稠油油藏的开发来说,蒸汽辅助重力泄油(SAGD)技术是一项创新技术。在油藏的开发中采用合适的开发方法,可以改善开采效果并且提高经济效益。因此,SAGD技术的研究对于稠油油藏的开采有着十分重要的意义。针对双水平井蒸汽辅助重力泄油技术,本文主要基于理论研究和数值模拟方法。在理论研究方面,本文分析了蒸汽辅助重力泄油的基本原理,着重阐述了蒸汽辅助重力泄油的布井方式以及驱油机理,并基于地质和流体两个方面分析了蒸汽辅助重力泄油的适应性,分析总结了SADG开懫的筛选标准。本文应用CMG软件建立双水平井数值模型并进行数值模拟。首先针对双水平井蒸汽辅助重力泄油的循环预热阶段,对相关参数进行研究并最终得到合理的预热参数;其次,分析研究了双水平井蒸汽腔的扩展规律以及影响蒸汽腔扩展的因素,随后针对生产阶段合理选择两井的注采参数;最后,设计三维模型进行物理实验,通过改变注入温度和注入速度,测得双水平产液量和产油量,得出各种变量对实验的影响因素,从而选择最优的实验参数,并分析双水平采收率的大体趋势,在物理实验的范围内验证了数值模拟结果的正确性,由此,优选出最合理的注采条件,在保证采收率的情况下,更大程度的提高经济效益。
[Abstract]:For the development of heavy oil reservoir, steam assisted gravity drainage is an innovative technology. Adopting suitable development method in reservoir development can improve production effect and increase economic benefit. Therefore, the study of SAGD technology is very important for heavy oil reservoir production. In view of the steam assisted gravity oil discharge technology in double horizontal wells, this paper is mainly based on theoretical research and numerical simulation method. In the aspect of theoretical research, the basic principle of steam assisted gravity oil discharge is analyzed, and the well distribution mode and oil displacement mechanism of steam assisted gravity discharge are expounded emphatically. The adaptability of steam assisted gravity oil discharge is analyzed based on geology and fluid, and the screening criteria of SADG are summarized. In this paper, the numerical model of double horizontal wells is established by using CMG software and the numerical simulation is carried out. Firstly, in view of the cycle preheating stage of steam assisted gravity discharge in double horizontal wells, the relevant parameters are studied and the reasonable preheating parameters are obtained. This paper analyzes and studies the expansion law of steam cavity in double horizontal wells and the factors influencing the expansion of steam cavities, and then reasonably selects the injection and production parameters of the two wells in view of the production stage. Finally, three dimensional model is designed to carry out physical experiments. By changing the injection temperature and injection rate, the two-level liquid production and oil production are measured, and the influence factors of various variables on the experiment are obtained, the optimum experimental parameters are selected, and the general trend of double-level oil recovery is analyzed. The correctness of the numerical simulation results is verified in the range of physical experiments. Therefore, the most reasonable conditions of injection and production are selected, and the economic benefits can be improved to a greater extent under the condition of ensuring oil recovery.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE345

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