酸化压裂工艺管柱优化设计

发布时间：2018-05-31 22:41

本文选题：酸化压裂管柱 + 受力分析　；参考：《长江大学》2015年硕士论文

【摘要】：随着各种提高采收率措施在油田的实施,酸化压裂技术日益成熟,越来越多的油田公司在进行油气井增产作业时应用到此项技术。酸化压裂工艺能够有效地改造油层、提高油层渗透率、增加油气井产量。在酸化压裂施工过程中,酸化压裂管柱是唯一的承载构件,是动力传递的重要组成系统。因此对其管柱进行受力分析、变形分析以及强度校核直接关系到酸化压裂施工的成功与否,对酸化压裂施工至关重要。对管柱组合进行优化设计,在保证安全施工的同时最大程度的提高油田的经济效益。本文首先对酸化压裂管柱及其配套工具,如封隔器、喷砂器、水力锚、油管等进行调查研究。充分了解各种管柱的结构原理,工作方式,及使用条件等,为进行管柱优化设计做好充分准备。分析了影响酸化压裂工艺失效管柱本身的多种原因,主要包括工艺管柱设计的问题,配套井下工具的质量问题,以及油管和封隔器的影响。通过对酸化压裂失败管柱自身的原因进行分析,提出了一些解决的对策,如提高井下工具技术性能、优化工艺管柱设计、提高油田酸化压裂管柱的安全可靠性等。并意识到了对酸化压裂工艺管柱进行受力分析,确定封隔器合理的坐封压力对酸化压裂管柱的重要性。对酸化压裂管柱的五种基本效应活塞效应、膨胀效应、温度效应、螺旋弯曲效应和流动粘滞效应以及管柱所受的浮重、内外压进行了深入研究。对影响管柱受力和变形的因素做出分析,并绘制了详细的受力、应变、以及管柱变形图,对管柱的受力以及变形给出了直观的结果,提出了管柱选取的建议。应用VB程序编制酸化压裂管柱优选软件,对软件安装的系统要求、运行环境、安装步骤,以及软件的功能和使用方法进行了介绍。通过输入各种参数,可以得出管柱的轴向力分布曲线图、轴向应力分布曲线图、等效应力分布曲线图、安全系数分布曲线、油管伸长量曲线图,从而得出管柱优选结果。应用ANSYS有限元分析软件,建立了封隔器的模型图,对封隔器进行了网格划分。计算出不同坐封压力下封隔器胶筒的变形情况以及胶筒和套管间的接触应力,通过计算,最终确定了合理的封隔器坐封压力。通过理论分析以及实例计算,为酸化压裂工艺管柱的优化设计提供了理论支持和技术保障。
[Abstract]:With the implementation of various oil recovery measures in the oilfield, acidification and fracturing technology is becoming more and more mature. More and more oil field companies apply this technology to oil and gas wells increasing production operation. The acid fracturing technology can effectively transform the oil layer, improve the permeability of the oil layer and increase the production of oil and gas wells. The pipe column is the only bearing member and an important component of the power transmission. Therefore, the force analysis, the deformation analysis and the strength checking are directly related to the success of the acidification and fracturing construction, which is very important to the acidification and fracturing construction. In order to improve the economic benefit of the oil field, this paper first investigates and studies the acid fracturing pipe column and its supporting tools, such as packer, sandblaster, hydraulic anchor, oil pipe, etc., fully understand the structure principle, working mode and use conditions of various pipe columns, and make full preparation for the optimization design of the pipe column. The various reasons of the pipe string itself include the problem of the design of the tube column, the quality of the supporting tools and the influence of the oil pipe and the packer. Through the analysis of the causes of the tubing column itself, some solutions are put forward, such as improving the performance of the downhole tool, optimizing the design of the tube column and improving the oil field. The safety and reliability of the acidizing and fracturing pipe column. It also realizes the stress analysis of the tubing column of the acid fracturing technology and determines the importance of the reasonable sealing pressure of the packer to the acid fracturing pipe column. Five basic effects on the acid fracturing pipe column, the piston effect, the expansion effect, the temperature effect, the spiral bending effect and the flow viscosity effect, are also realized. The floating weight and internal and external pressure of the pipe column are deeply studied. The factors that affect the force and deformation of the pipe column are analyzed, and the detailed stress, strain, and tube column deformation map are drawn. The intuitionistic results are given to the force and deformation of the pipe column, and the suggestion of the selection of the pipe column is put forward. The optimization software of the acid fracturing pipe column is developed by using the VB program. The system requirements, the operating environment, the installation steps, the function and the use method of the software are introduced. Through the input of various parameters, the axial force distribution curve, the axial stress distribution curve, the equivalent stress distribution curve, the safety factor distribution curve and the tubing elongation curve can be obtained. By using the ANSYS finite element analysis software, the model diagram of the packer is established and the packer is meshed. The deformation of the packer and the contact stress between the rubber cylinder and the casing are calculated. The reasonable pressure of the packer is determined by calculation. The theoretical analysis is carried out by the theoretical analysis. The calculation results provide theoretical support and technical support for the optimal design of acidizing fracturing string.
【学位授予单位】：长江大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE934.3

【参考文献】