套管补贴作业井下装置设计

发布时间：2018-03-21 04:42

本文选题：套管　切入点：磨损　出处：《东北石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着我国油气田开采的不断深入发展,很多油气井进入了中后期的开发过程。因此,长时间经受各种腐蚀和地层作用的套管不可避免地出现了不同程度的损坏。为避免井下作业事故,开展套管磨损程度及剩余强度分析具有重要的现实意义。本文论述了国内套管磨损的一些概况,介绍了国内套管损坏的现状,我国油田的部分油、气井进入中后期开发,套管损坏不断出现。油、气井套管损坏主要形式是套管变形、泄漏等。因此,目前在我国油田应用的套管修复主要方法有:机械胀管修复法、磨铣整形法、爆炸法、套管内补贴法。套管井下补贴修复作业,不但能提高油、气井的寿命,较少损失,而且重新生产还带来巨大的经济效益。这对于油、气井的可持续发展是一个有效的措施。针对井下套管磨损后的具体情况,文章从套管补贴的基本原理及可行性进行分析,认为该装置设计要求的一次补贴长度为3~6m,在允许的范围内。所以,设计液力套管补贴井下作业装置是可行的。本文介绍了设计参数的设定、主要零部件的设计、零部件的强度校核。并结合作业现场套管补贴的具体过程,分析和验证了套管补贴的可行性。
[Abstract]:With the continuous development of oil and gas field production in China, many oil and gas wells have entered the middle and late development process. Casing which has been subjected to various corrosion and formation for a long time is inevitably damaged to varying degrees. It is of great practical significance to analyze the casing wear degree and residual strength. This paper discusses some general situation of casing wear in China, introduces the present situation of casing damage in China, and introduces some oil and gas wells in oil fields in our country in the middle and late stage of development. Casing damage occurs continuously. Casing damage in oil and gas wells is mainly in the form of casing deformation, leakage, etc. Therefore, the main methods of casing repair used in oil fields in China at present are as follows: repairing method of mechanical expansion pipe, grinding and shaping method, explosion method, etc. Casing subsidy method. Casing downhole subsidy repair operation can not only improve the life of oil and gas wells, but also bring huge economic benefits to oil production. The sustainable development of gas wells is an effective measure. According to the concrete situation of casing wear down hole, this paper analyzes the basic principle and feasibility of casing subsidy. It is considered that the length of the primary subsidy required for the design of the device is 3 脳 6 m, which is within the allowable range. Therefore, it is feasible to design the hydraulic casing subsidizing downhole operation device. This paper introduces the setting of the design parameters and the design of the main parts and components. The feasibility of casing subsidy is analyzed and verified.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE931.2

【共引文献】