兴隆台油田地面注水系统优化研究

发布时间：2018-12-21 07:40

【摘要】：在油气田开发工程中,注水是很重要的开采方式,相对其它开采方式,注水开采成本较低,水的来源易解决,大部分油田开采时都进行注水开采。从节能降耗的角度出发,注水系统能耗是油田生产的耗能大户,随着油田的逐渐开发,油被采出后,为了保证地层压力,就必须注水,注水后,油层含水率上升,为了保证产油量,注水量也会逐渐增加,随着注水量的增加,注水系统耗电量逐渐增加,根据相关数据分析,当油田的含水率大于70%时,注水系统耗电占整个油田生产用电的40%左右,所以是整个油田生产系统的耗能大户,如何提高注水系统效率,降低注水成本是每个管理人员关心的重大问题。兴隆台采油厂1971年投入开发,1974年开始注水,截止到2016年底,共有水井328口,开井204口,日注水量9030m3,随着油田开采程度的提高以及开采强度的加大,注水开发过程中暴漏出的问题越来越多,注水新区块的不断开发,注水管网面积越来越广,地面管网交错复杂,新旧管网交替,管道和阀组较多,局部有调剖,给油田注水系统的管理、维修、高效运行等带来极大的工作难度和挑战;部分区块注水较早,设备投产年限时间较长,造成设备运行效率降低,一些管网运行年限较长,导致管网腐蚀严重,局部有穿孔现象,导致系统效率偏低,能耗损失较大。本文根据兴隆台采油厂的注水现状,注水地面系统能耗构成,分析注水系统的工艺流程,能耗构成等情况,挖掘每一部分节能潜力,根据现场测试情况,分析节能技改(变频技术、涂膜技术以及管网优化技术等)情况,提高了注水系统效率、注水泵的泵效、管网的效率、降低注水能耗,节约了注水成本,相关的现场数据验证,也为今后注水系统的节能改造提供可靠的技术支撑。
[Abstract]:In oil and gas field development engineering, water injection is a very important way of exploitation. Compared with other exploitation methods, the cost of water injection extraction is relatively low, the source of water is easy to solve, and most oil fields are exploited with water injection. From the point of view of saving energy and reducing consumption, the energy consumption of water injection system is the main energy consumption in oilfield production. With the gradual development of oil field, oil is produced, in order to ensure formation pressure, water injection is necessary. After water injection, the water cut of reservoir increases. In order to ensure the oil production, the water injection will increase gradually. With the increase of the water injection, the power consumption of the water injection system will gradually increase. According to the analysis of the relevant data, when the water cut of the oil field is greater than 70, The power consumption of water injection system accounts for about 40% of the production power consumption in the whole oilfield, so it is a major problem that every manager cares about how to improve the efficiency of water injection system and reduce the cost of water injection. Xinglongtai Oil production Plant was put into development in 1971 and began to inject water in 1974. By the end of 2016, there were 328 wells, 204 wells opened and 9030 m3 per day. With the development of oil field and the increase of exploitation intensity, In the process of water injection development, there are more and more problems caused by sudden leakage. With the continuous development of the new block of water injection, the area of water injection network is more and more extensive, the surface pipe network is staggered and complex, the new and old pipe networks alternate, there are more pipelines and valve groups, and there are local profile control. It brings great difficulties and challenges to the management, maintenance and efficient operation of oilfield water injection system. In some blocks, the water injection is earlier, the time of the equipment put into production is longer, the operation efficiency of the equipment is reduced, and some pipe networks are operated for a long time, which leads to the serious corrosion of the pipe network, the phenomenon of local perforation, which leads to the low efficiency of the system and the large loss of energy consumption. According to the present situation of water injection in Xinglongtai Oil production Plant, the composition of energy consumption of water injection surface system, the process flow of water injection system, the composition of energy consumption and so on, this paper excavates the energy saving potential of each part, and according to the field test situation, This paper analyzes the technical innovation of energy saving (frequency conversion technology, film coating technology and pipe network optimization technology, etc.), which improves the efficiency of water injection system, pump efficiency, pipe network efficiency, reduces water injection energy consumption, saves water injection cost, and verifies relevant field data. It also provides reliable technical support for energy-saving reconstruction of water injection system in the future.
【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】：TE357.6

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