四合一烟火管清防垢技术研究
发布时间：2018-08-25 07:34
【摘要】：转油站采用四合一气液分离处理工艺可以达到简化站内工艺、降低投资的目的,因此近年来四合一组合装置在YSL油田的应用也日益广泛。然而随着运行时间的延长,四合一频频出现烟、火管鼓包或穿孔等问题,影响生产安全平稳运行。根据现场勘查和垢样化验结果,烟火管烧损主要是由于产出液中含有大量淤泥等杂质,易沉积、粘附在烟火管顶面,经过长时间的高温加热转化结垢导致的。经过调研得知,为了防止加热炉烟火管外表面结垢,国内外发展出了一系列的清防垢工艺,一些技术也进行过小范围试验应用,但并没有形成一套成熟适用的、经济可行的实时、在线清防垢技术。目前国内油田烟火管清防垢主要依靠定期清淤、酸洗等手段,但这种措施需要设备停产才能进行,影响生产安全平稳运行。针对这一问题,本文开展四合一高压水力射流清防垢技术研究,采用高压水力射流定期冲洗烟火管顶面的方法,避免杂质沉积进而转化成垢,实现实时、在线清防垢,保证生产安全平稳运行。通过调研水力射流清洗技术得知,其在交通化工等各个领域均已广泛应用,且本身优势明显,但在烟火管清防垢的课题上尚未有相关研究。本文通过对四合一烟火管表面沉积物进行现场勘查和取样分析,明确烟火管的结垢分布规律,为高压水力射流清防垢工艺技术开发和确定清防垢周期提供技术参数。在实际工艺开发过程中,结合现场实际,采用掺水泵作为增压设备,四合一底水作为高压水力射流的水源,根据水质特性,通过计算机仿真计算,研究高压水力射流的喷射压力、流速、冲洗角度等不同参数的清防垢作用效果,综合分析喷嘴的开孔数量、靶距、喷射角度和规格尺寸所对应的冲洗作用区域大小,确定高压水力射流清防垢工艺关键技术参数。然后根据射流关键参数结合四合一加热段空间结构,设计烟火管清防垢管路,确定烟火管的射流输送管和喷嘴的具体工艺参数。最后绘制出高压水力射流清防垢装置工艺制造及四合一内部安装图,并结合现场可用高压水源,设计出四合一外部供水管路。为检验技术的现场应用效果,结合YSL油田四合一维修计划安排,选定SHE22转油站2#四合一进行高压水力射流清防垢现场试验。经过1年多的现场跟踪试验效果,结果显示安装高压水力射流清防垢装置的烟火管顶面基本未结垢。
[Abstract]:The four-in-one gas-liquid separation process can simplify the in-station process and reduce the investment, so the four-in-one combination device has been widely used in YSL oilfield in recent years. However, with the extension of operation time, smoke, fire pipe bulging or perforation frequently appear, which affects the safe and stable operation of production. According to the field investigation and scale test results, pyrotechnic tube burning is mainly due to a large amount of sludge and other impurities in the production fluid, easy to deposit, adhere to the top of the pyrotechnic tube, and after a long period of high temperature heating conversion to scale. After investigation, we know that in order to prevent the fouling on the outer surface of the pyrotechnic tube of the heating furnace, a series of scale cleaning and anti-scaling processes have been developed at home and abroad, and some of the technologies have also been tested in a small scale, but they have not formed a set of mature and applicable ones. Economical and feasible real-time, online anti-scaling technology. At present, the scale control of pyrotechnic pipe in domestic oil field mainly depends on regular silt cleaning and acid cleaning, but this kind of measure needs the equipment to stop production, which affects the safe and stable operation of production. Aiming at this problem, this paper studies the anti-scaling technology of four-in-one high-pressure hydraulic jet, and adopts the method of regularly washing the top surface of pyrotechnic pipe with high-pressure hydraulic jet to avoid the deposition of impurity and convert it into scale, so as to realize real-time and on-line anti-scaling. Ensure production safety and smooth operation. Through the investigation of hydraulic jet cleaning technology, it has been widely used in various fields, such as transportation and chemical industry, and its own advantages are obvious, but there is no related research on the subject of pyrotechnic pipe cleaning and scale prevention. In this paper, the fouling distribution of the pyrotechnic tube is determined by on-the-spot investigation and sampling analysis of the surface sediment of the four-in-one pyrotechnic pipe, which provides technical parameters for the development of the scale cleaning and anti-scaling technology with high-pressure hydraulic jet and the determination of the anti-scaling period. In the process of practical process development, combined with the field practice, the mixing pump is used as the booster equipment, and the four-in-one bottom water is used as the source of the high pressure hydraulic jet. According to the water quality characteristics, the computer simulation calculation is carried out. The anti-scaling effect of high pressure hydraulic jet with different parameters, such as injection pressure, velocity and flushing angle, was studied. The size of the flushing area corresponding to the number of nozzle holes, the target distance, the injection angle and the size of the nozzle was analyzed synthetically. Determine the key technical parameters of high pressure hydraulic jet cleaning and scale prevention technology. Then according to the key parameters of the jet and the space structure of the four-in-one heating section, the anti-scaling pipeline of the pyrotechnic pipe is designed, and the specific technological parameters of the jet conveying pipe and the nozzle of the pyrotechnic pipe are determined. Finally, the process of high pressure hydraulic jet cleaning and anti-scaling device and the internal installation diagram of the four-in-one system are drawn, and the external water supply pipeline of the four-in-one system is designed in combination with the high pressure water sources available in the field. In order to test the field application effect of the technology, combined with the four-in-one maintenance plan of YSL Oilfield, the SHE22 transfer Station was selected to carry out the scale cleaning and scale prevention test with high pressure hydraulic jet. After more than one year of field tracking test, the results show that the top surface of pyrotechnic pipe installed with high pressure hydraulic jet cleaning device is basically not fouled.
【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】：TE832.36
本文编号：2202197
[Abstract]:The four-in-one gas-liquid separation process can simplify the in-station process and reduce the investment, so the four-in-one combination device has been widely used in YSL oilfield in recent years. However, with the extension of operation time, smoke, fire pipe bulging or perforation frequently appear, which affects the safe and stable operation of production. According to the field investigation and scale test results, pyrotechnic tube burning is mainly due to a large amount of sludge and other impurities in the production fluid, easy to deposit, adhere to the top of the pyrotechnic tube, and after a long period of high temperature heating conversion to scale. After investigation, we know that in order to prevent the fouling on the outer surface of the pyrotechnic tube of the heating furnace, a series of scale cleaning and anti-scaling processes have been developed at home and abroad, and some of the technologies have also been tested in a small scale, but they have not formed a set of mature and applicable ones. Economical and feasible real-time, online anti-scaling technology. At present, the scale control of pyrotechnic pipe in domestic oil field mainly depends on regular silt cleaning and acid cleaning, but this kind of measure needs the equipment to stop production, which affects the safe and stable operation of production. Aiming at this problem, this paper studies the anti-scaling technology of four-in-one high-pressure hydraulic jet, and adopts the method of regularly washing the top surface of pyrotechnic pipe with high-pressure hydraulic jet to avoid the deposition of impurity and convert it into scale, so as to realize real-time and on-line anti-scaling. Ensure production safety and smooth operation. Through the investigation of hydraulic jet cleaning technology, it has been widely used in various fields, such as transportation and chemical industry, and its own advantages are obvious, but there is no related research on the subject of pyrotechnic pipe cleaning and scale prevention. In this paper, the fouling distribution of the pyrotechnic tube is determined by on-the-spot investigation and sampling analysis of the surface sediment of the four-in-one pyrotechnic pipe, which provides technical parameters for the development of the scale cleaning and anti-scaling technology with high-pressure hydraulic jet and the determination of the anti-scaling period. In the process of practical process development, combined with the field practice, the mixing pump is used as the booster equipment, and the four-in-one bottom water is used as the source of the high pressure hydraulic jet. According to the water quality characteristics, the computer simulation calculation is carried out. The anti-scaling effect of high pressure hydraulic jet with different parameters, such as injection pressure, velocity and flushing angle, was studied. The size of the flushing area corresponding to the number of nozzle holes, the target distance, the injection angle and the size of the nozzle was analyzed synthetically. Determine the key technical parameters of high pressure hydraulic jet cleaning and scale prevention technology. Then according to the key parameters of the jet and the space structure of the four-in-one heating section, the anti-scaling pipeline of the pyrotechnic pipe is designed, and the specific technological parameters of the jet conveying pipe and the nozzle of the pyrotechnic pipe are determined. Finally, the process of high pressure hydraulic jet cleaning and anti-scaling device and the internal installation diagram of the four-in-one system are drawn, and the external water supply pipeline of the four-in-one system is designed in combination with the high pressure water sources available in the field. In order to test the field application effect of the technology, combined with the four-in-one maintenance plan of YSL Oilfield, the SHE22 transfer Station was selected to carry out the scale cleaning and scale prevention test with high pressure hydraulic jet. After more than one year of field tracking test, the results show that the top surface of pyrotechnic pipe installed with high pressure hydraulic jet cleaning device is basically not fouled.
【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】：TE832.36
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