M开发区套损因素及力学机理研究

发布时间：2018-11-05 15:55

【摘要】：自从2003年以来M开发区套管损坏问题越来越严重,套管损坏引起的经济损失相当巨大,给油田开发带来很大的影响。同时套损井的大修治理又需要花费高昂的费用,所以我们要对该区的套管损坏的因素进行分析、研究。从该区的套损现状看,套损井点的平面分布特点,套损点纵向的层位分布特点已基本搞清。对引发套损的原因,套损机理的研究只是从统计学上加以分析,还有在于进一步深入的研究。本论文的目的就是搞清M开发区引发套损的主要原因,认识和了解套管损坏机理,制定有针对性的套损预防措施,从而进行套损井的综合治理以减少油田维修费用的投入。对减缓套损速度,搞好油田开发调整,使油田长期高效稳产将有十分重要的意义。本论文主要研究内容是以地质及开发因素分析为基本点出发,利用岩体力学观点,结合油水井因注采致使地下压力发生变化,最终导致岩层应力应变发生改变这一理论,来解释油水井发生套管损坏的力的来源;最后,做大量相关实验来论证该论点。本论文首先总结分析M开发区开发史,以现场资料做为基本条件,通过做出相关实验得到相应数据,将套管损坏特征做出总体分析,利用相关地质知识、开发知识及岩体力学的相关理论,与实际生产相结合,目的是在油田实际工作中,帮助建立油田套管保护体系。
[Abstract]:Since 2003, the casing damage problem has become more and more serious in M development zone, and the economic loss caused by casing damage is quite huge, which has a great impact on oilfield development. At the same time, the overhauling of casing damage well requires high cost, so we should analyze and study the factors of casing damage in this area. From the current situation of casing failure in this area, the characteristics of the plane distribution of casing damage well point and the longitudinal layer distribution of casing damage point have been basically understood. The cause of casing damage is only statistically analyzed, and further research is carried out. The purpose of this paper is to find out the main causes of casing damage in M development zone, to understand and understand the mechanism of casing damage, and to formulate targeted casing damage prevention measures, so that comprehensive treatment of casing damage wells can be carried out in order to reduce the cost of oil field maintenance. It is of great significance to slow down casing damage speed, adjust oilfield development and make oil field produce stable and efficient for a long time. Based on the analysis of geological and development factors, the main research content of this paper is based on the theory of rock mechanics, combined with the change of underground pressure caused by injection and production of oil and water wells, and finally the change of stress and strain of rock formation. To explain the source of casing failure in oil-water wells; Finally, a large number of relevant experiments are conducted to demonstrate this argument. In this paper, the development history of M development zone is summarized and analyzed firstly. Taking the field data as the basic condition, the relevant data are obtained through relevant experiments, and the characteristics of casing damage are analyzed as a whole, and the relevant geological knowledge is used. The related theories of development knowledge and rock mechanics are combined with practical production in order to help establish casing protection system in oil field.
【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】：TE931.2

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