注汽锅炉化学清洗工艺

针对注汽锅炉炉管内部及对流段超片管外部的附着物提出了一套化学清洗方法。文中介绍了清洗液配制工艺流程、清洗步骤及其效果。     

新型橡胶模具清洗方法

橡胶制品生产企业一般采用化学和机械方法清洗模具,本文介绍了当前国内出现的其它几种新的清洗方法。     

一种新型清洗剂在原油换热器清洗中的应用评价

大庆油田原油稳定装置多台原油换热器结垢现象严重,换热效率下降,物理清洗法工作难度较大。文章在研制一种新型油垢清洗剂的基础上,将其应用于原油换热器的化学清洗中,清洗后换热器总传热系数提高了40．8％,证明了油垢清洗剂的高效性。     

一种新型清洗剂在原油换热器清洗中的应用评价

大庆油田原油稳定装置多台原油换热器结垢现象严重,换热效率下降,物理清洗法工作难度较大。在研制了一种新型油垢清洗剂的基础上,将其应用于原油换热器的化学清洗中,清洗后换热器总传热系数提高了40．8％．证明了油垢清洗剂的高效性。     

一种新型硫化亚铁无害清洗配方的研制

炼油厂在炼制高硫原油时炼油设备上容易产生FeS结垢,其处理难度大,费用高.针对此情况,对炼油厂产生的硫化亚铁污垢进行了研究,研制出了一种以表面活性剂、盐酸、除硫剂、油垢清洗剂、渗透剂、缓蚀剂等为主要组分的污垢清洗配方,并对其性能进行了实验室评价.结果表明,此清洗剂除垢速度快,对设备腐蚀性小,操作简便,无H2S气体溢出,催化裂化装置上的先导性实验表明,其清洗效果好.     

化学清洗工艺在体积标定管清洗中的应用

介绍了目前常用的设备清洗方法,说明油垢形成原因,对体积管油垢的化学清洗步骤及注意事项展开了论述。最后对化学酸洗工艺作了使用效果分析。     

化学清洗工艺在体积标定管清洗中的应用

介绍了目前常用的设备清洗方法，说明油垢形成原因，对体积管油垢的化学清洗步骤及注意事项展开了论述。最后对化学酸洗工艺作了使用效果分析。     

日本TAIHO株式会社清罐系统及清罐工艺

ＴＡＩＨＯ株式会社开发了两种清罐系统：ＴＡＩＨＯＣＯＷＳ和ＴＡＩＨＯＴＡＭＳ。前者适用于１０００ｔ以上的油罐；后者适用于１００００ｔ以下的油罐。两种清罐系统自问世以来，已有数以百计的油罐用此项技术进行了清理。     

压缩机表面冷凝器化学清洗

对E-EA-215、E-EA-503压缩机表面 冷凝器的清洗     

数控脉冲清洗技术在油田加热炉盘管清洗中的应用

西北油田某卸油站的加热炉经过长时间使用后,因加热原油黏度大,含硫高,造成盘管结垢、堵塞严重,进出口压差变大,热效率明显降低。但生产任务重,允许停炉的时间较短,造成盘管清洗困难。根据对以往加热炉盘管清洗技术与其它先进技术对比分析,本次选择采用数控脉冲清洗技术进行清洗,通过对清洗结果分析评价,该技术属于物理除垢,可以彻底去除管壁油垢等杂质,无污染,单台加热炉清洗时间缩短至1天,能及时恢复生产。对清洗前后加热炉各项参数对比发现,清洗后,单台加热炉热效率提升3%,燃料气节约38 m³/d,实现了节能降耗的总目标。     

A New Technique for Cleaning Horizontal Wellbores

Abstract

The plugging of horizontal wellbores can lead to significant loss of productivity and can nullify the benefit of a horizontal wellbore, which is expensive to create. Cleaning horizontal wellbores is a formidable challenge. The problem is particularly complex for heavy oil formations that show asphaltene, sand, and other difficult-to-remediate problems. This paper aims at developing a new technique that can effectively clean up a horizontal wellbore without requiring expensive workovers. The technique involves the use of ultrasonic treatment coupled with foam treatment. Initial experiments show that ultrasonic treatment can reduce plugging in two ways—the first is the reduction in oil viscosity (especially in the presence of asphaltic crudes) and the second is the ability of ultrasound to keep particles in suspension. The second effect can be due to the generation of microbubbles. The process is coupled with in situ generation foam. In order to generate foam, a particular type of surfactant is chosen from a selection of a wide range of surfactants supplied by the service companies. While the design of the device that couples both these effects needs to be optimized, an initial series of experiments shows good promises.     

A New Technique for Cleaning Horizontal Wellbores

The plugging of horizontal wellbores can lead to significant loss of productivity and can nullify the benefit of a horizontal wellbore, which is expensive to create. Cleaning horizontal wellbores is a formidable challenge. The problem is particularly complex for heavy oil formations that show asphaltene, sand, and other difficult-to-remediate problems. This paper aims at developing a new technique that can effectively clean up a horizontal wellbore without requiring expensive workovers. The technique involves the use of ultrasonic treatment coupled with foam treatment. Initial experiments show that ultrasonic treatment can reduce plugging in two ways—the first is the reduction in oil viscosity (especially in the presence of asphaltic crudes) and the second is the ability of ultrasound to keep particles in suspension. The second effect can be due to the generation of microbubbles. The process is coupled with in situ generation foam. In order to generate foam, a particular type of surfactant is chosen from a selection of a wide range of surfactants supplied by the service companies. While the design of the device that couples both these effects needs to be optimized, an initial series of experiments shows good promises.     

常压电磁感应加热油管清洗工艺与装置研究

介绍一种采用循环水做清洗介质,旋转机械刷做除油工具,电磁感应加热为辅助除油手段的油管常压清洗工艺技术。在详述工艺流程的基础上,提出这种工艺方法中影响油管清洗质量和清洗速度的主要工艺参数,以及他们之间的相互作用规律。经过与国内同类工艺手段类比分析证明,油管常压清洗工艺技术在安全、环保、高效、节能等四个方面具有显著技术优势。     

基于机器视觉技术的加热炉视频监控系统

早期加热炉内的燃烧情况通常依靠操作人员经验判断,不但增加了工作强度,而且存在安全隐患。针对该问题,介绍了基于机器视觉技术的加热炉视频监控系统,该系统配有相应软件及硬件,能够实现远程监控火焰燃烧情况。该系统运行至今,基本能够满足加热炉内燃烧情况的监控要求。     

A New Hole Cleaning Criteria for Drilling Operations of Oil Wells

A study of drilling fluid flow in the annular space and drill pipe through residence time distribution (RTD) analysis of a tracer injected in impulse form while drilling an oil well is presented in this article. Two field trials were carried out in order to evaluate the technical feasibility and potential practical application of the RTD theory and the dispersion model. From the results it is possible to explain physically the flow behavior and its relation with parameters such as carrying capacity of the drilling fluid and hole cleaning conditions. The RTD analysis of tracer response indicates the presence of anomalous flow in both trials, characterized by two fluid volume fractions traveling with different velocities. The magnitude of these volume fractions concerns directly with the carrying capacity of the drilling fluid, hence, the hole cleaning conditions as is explained along the work. The dispersion number (RDN) as well as other distribution functions are suggested as a measure of the overall behavior of the fluid in a hole. This criterion is compared with empirical correlations employed in the industrial practice.     

A New Hole Cleaning Criteria for Drilling Operations of Oil Wells

Abstract

A study of drilling fluid flow in the annular space and drill pipe through residence time distribution (RTD) analysis of a tracer injected in impulse form while drilling an oil well is presented in this article. Two field trials were carried out in order to evaluate the technical feasibility and potential practical application of the RTD theory and the dispersion model. From the results it is possible to explain physically the flow behavior and its relation with parameters such as carrying capacity of the drilling fluid and hole cleaning conditions. The RTD analysis of tracer response indicates the presence of anomalous flow in both trials, characterized by two fluid volume fractions traveling with different velocities. The magnitude of these volume fractions concerns directly with the carrying capacity of the drilling fluid, hence, the hole cleaning conditions as is explained along the work. The dispersion number (RDN) as well as other distribution functions are suggested as a measure of the overall behavior of the fluid in a hole. This criterion is compared with empirical correlations employed in the industrial practice.     

储油罐机械清洗技术的应用

储油罐机械清洗技术是原油储罐机械清洗的专项技术，1998年开始在大庆油田推广应用，它采用密闭式清洗工艺，分原油移送，油中搅拌，同种油清洗，温水清洗四道工序作业施工，清洗效果十分显著，截止到2001年底，已清洗原油储罐9座，回收落地油4万多吨，创经济效益4800多万元。