1、 毕业设计(论文)毕业设计(论文) 题 目 采气井筒防垢研究 院 (系) 石油与天然气工程学院 专业班级 油气储运工程 学生姓名 学号 指导教师 职称 评阅教师 职称 2013 年 6 月 7 日 I 摘 要 在油气田开发过程中,管线的结垢现象普遍存在于生产系统中,特别是在开发后期 产水量开始增加时。井筒的结垢导致井筒流通横截面积减小,流体输送效率也会随之下 降,更严重的还可能导致井筒腐蚀穿孔甚至报废,严重影响油气的安全生产。此外,频 繁修井会耗费大量时间、人力、物力、财力。到目前为止,研究油田管线结垢己有很多 人,并取得了不错的效果,但是针对气田生产管线结垢研究却相对较少。 为减少结垢现象的
2、出现,稳定气井的生产效益,必须保证地下井筒的畅通无阻。此 次设计分析蜀南气矿一些气井的水和垢样的组成,鉴定易结垢类型和水质类型,然后再 通过文献查阅以及理论分析,提出防止井筒结垢的技术和工艺措施。 关键词:采气井筒 结垢 防垢 措施 II ABSTRACT In the exploitation of oil and gas field, pipeline scaling phenomenon is widespread in the production system,especially in the later stage of development of water producti
3、on began to increase. Wellbore scaling leads to wellbore flow cross-sectional area decreases, the fluid conveying efficiency will decrease,the more serious and may lead to wellbore corrosion perforation even scrapped,serious impact on oil and gas production safety. In addition, frequent repair will
4、spend a lot of time, manpower, material resources, financial resources. So far, research on oil pipeline scaling has a lot of people, and have achieved good results, but the scale of production pipeline gas knot is relatively small. In order to reduce the fouling phenomenon, stable gas production be
5、nefit, must ensure that the underground wellbore unimpeded,it is natural gas well exploitation and Realization of pipeline and process conditions. Therefore, analysis of the composition of southern Sichuan gas mine of some gas wells in water and scale of this design, and identification of scaling ty
6、pe and quality type, and then through the literature review and theoretical analysis, put forward to prevent the technology and process measures of wellbore scale. Keywords: gas wellbore ;scaling ;scale prevention;measure III 目 录 摘 要 . I ABSTRACT . II 1 绪 论 1 1.1 国内防垢措施外研究现状 1 1.1.1 化学防垢法 1 1.1.2 物理防垢法 2 1.1.3 油气田防垢技术进展 2 1.2 采气筒防垢研究的目的和意义 3 1.3 结垢机理研究及防垢措施发展动态 4 1.3.1 结垢机理 4 1.3.2 CaCO3垢形成过程 . 5 1.3.3 CaSO4垢的形成过程 . 5 1.3.4