二氧化碳驱油能耗研究及其在吉林油田的应用

发布时间：2018-01-04 13:03

  本文关键词：二氧化碳驱油能耗研究及其在吉林油田的应用　出处：《东北石油大学》2017年硕士论文　论文类型：学位论文

  更多相关文章： 二氧化碳驱 采出液性质 二氧化碳循环利用 集输系统能耗

【摘要】：到目前为止,我国大部分油田已经进入开采中后期,油田含水率逐年升高,大量的水无效循环,导致生产成本增加,浪费大量资源和能源,严重影响油田开发经济效益。随着油田的开发,常规水驱开发方式已经不能够满足生产要求,并且水驱开采后储层内存在大量的剩余油区块,严重影响产油量。本论文研究CO_2驱油开发方式,以国内外的研究现状为理论基础,以吉林油田CO_2驱区块为研究对象,通过室内实验和现场检测的方法,对二氧化驱采出液性质、伴生气组分、集输系统能耗、气液分离系统、计量间、脱水设备和污水处理系统等参数进行测试研究,并将各项参数与水驱进行比较,分析其驱替优势。采用CO_2驱油方式不仅增加了原油的采收率,而且还减少了空气中二氧化碳的含量,减小温室效应,减缓全球气候变暖。二氧化碳的有效利用,减少二氧化碳处理费用,为全球环境做出了突出贡献。将CO_2注入油田提高原油采收率是石油工业的一项成熟技术,同时又实现了CO_2的地下埋存。但是由于二氧化碳的注入会导致采出液的性质发生较大的变化,将会影响采出液凝点、粘度、密度以及活性组分含量,使流体的流动性能因活性组分的变化而发生改变。因此,为研究其变化规律,对二氧化碳驱采出液物性进行分类研究。结合吉林油田二氧化碳驱采出流体集输系统及二氧化碳循环利用系统运行现状,进行二氧化碳驱油试验研究,对比分析集输系统和循环利用系统效率,包括CO_2驱采出流体的组分变化、物性变化规律,与水驱相比给出二者的变化量和变化曲线,并判断二氧化碳驱油的适用性。
[Abstract]:So far, most oilfields in China have entered the middle and late mining, oil water ratio increased year by year, invalid circulation of a large amount of water, resulting in increased production costs, waste a lot of resources and energy, seriously affect the economic benefit of oil field development. With the development of oil fields, conventional water flooding has not been able to meet the production requirements, and water flooding there are a lot of residual oil reservoir exploitation, serious impact on oil production. This paper studies CO_2 flooding development mode, the research status at home and abroad based on the theory of CO_2 flooding block in Jilin oilfield as the research object, the detection method of laboratory experiment and field, the two oxidation properties of producedfluid flooding and gas component, the gathering system of energy consumption, the gas-liquid separation system, measurement, test of dewatering equipment and sewage disposal system parameters, and the parameters were compared with water flooding, analyze the flooding For advantage. CO_2 flooding not only increased the oil recovery efficiency, but also reduce the amount of carbon dioxide in the air and reduce the greenhouse effect, slow down global warming. The effective use of carbon dioxide, carbon dioxide, reduce processing costs, has made outstanding contributions to the global environment. CO_2 was injected into the oil to enhance oil recovery of oil industry is a mature technology, and realize CO_2 underground storage. But due to the injection of carbon dioxide will cause the produced fluid properties change greatly, will affect the produced liquid condensation point, viscosity, density and content of active components, due to changes of active components and the change of fluid flow properties. Therefore, in order to study the variation of carbon dioxide flooding of Jilin oilfield. Combining with the classification of carbon dioxide flooding fluid gathering system and carbon dioxide recycling With the system operation situation, the oil test study of carbon dioxide flooding, comparative analysis of the gathering system and recycling efficiency of the system, including the CO_2 flooding fluid composition changes, the rules change, variation and variation curve and water flooding are presented and compared with the two, and determine the applicability of two carbon dioxide flooding.

【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】：TE357.45
，

本文编号：1378598