连续油管水力喷砂射孔工艺研究

发布时间：2018-02-27 18:38

本文关键词： 连续油管水力喷砂射孔影响因素实例计算　出处：《西南石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：连续油管水力喷砂射孔技术可有效解决四川、大庆等油气区低孔低渗、多产层纵向分布、层间跨距大等储层有效开发问题,连续油管水力喷砂射孔形成的水力冲蚀孔对储层基本无伤害,孔眼质量的好坏直接影响之后增产作业效果。本文采用了理论、实验研究、数值模拟等方法开展研究。首先从伯努利原理、水力喷射切割理论模型和水力喷砂射孔微观作用机理方面入手,论证连续油管水力喷砂射孔对地层基本无伤害等重要特点；然后对影响连续油管水力喷砂射孔能力的因素进行研究,主要是通过Fluent软件数值模拟、实验数据对比分析等方法研究了固定喷速孔眼入口孔内流场和压力场分布、水力孔眼内部压力分布影响因素、不同射孔参数对地层破裂压力和套管强度的影响等；工艺设计中对影响连续油管水力喷砂射孔的关键参数(喷嘴参数、施工压力参数等)进行了设计计算；作业程序部分对工艺流程、相关设备、作业注意事项进行了简要介绍,其中对水力喷射工具腐蚀原因及改进措施提出了自己的看法；最后对XX井进行了一次连续油管水力喷砂射孔方案的概念设计。通过本文的研究,更加明确了连续油管水力喷砂射孔工艺的概念设计思路与方法,总结得出了水力喷射工具腐蚀原因及改进措施等新的经验认知,为低渗油气藏高效开发打下了一定理论和实践基础。
[Abstract]:Continuous tubing hydraulic sand blasting perforation technology can effectively solve the problems of effective reservoir development, such as low porosity and low permeability, vertical distribution of productive layers and large interlayer span in Sichuan and Daqing oil and gas regions, etc. The hydraulic erosion hole formed by hydraulic sand blasting in continuous tubing has no damage to reservoir, and the quality of hole directly affects the effect of increasing production. In this paper, theoretical, experimental and numerical simulation methods are used. Firstly, the Bernoulli principle, the theoretical model of hydraulic jet cutting and the microscopic mechanism of hydraulic sandblasting perforation are introduced. The main characteristics of continuous tubing hydraulic sand blasting perforation are demonstrated, such as no damage to the formation, and the factors influencing the hydraulic sand blasting perforation capacity of continuous tubing are studied, mainly through the numerical simulation of Fluent software. The distribution of flow field and pressure field in the inlet hole of fixed injection hole, the influencing factors of pressure distribution in hydraulic hole, and the influence of different perforation parameters on formation fracture pressure and casing strength were studied by comparing and analyzing the experimental data. In the process design, the key parameters (nozzle parameters, construction pressure parameters, etc.) that affect the hydraulic sandblasting perforation of continuous tubing are designed and calculated. The reasons for corrosion of hydraulic injection tools and the improvement measures are put forward. Finally, the concept design of a continuous tubing hydraulic sandblasting perforation scheme is carried out for XX well. Through the research in this paper, the conceptual design ideas and methods of continuous tubing hydraulic sandblasting perforation process are more clearly defined, and new experiential cognition such as corrosion reasons of hydraulic injection tools and improvement measures are summarized. It lays a theoretical and practical foundation for the high efficiency development of low permeability reservoirs.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE355.7

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