筛管完井燃爆压裂的可行性研究

发布时间：2018-03-02 11:17

本文选题：燃爆压裂　切入点：筛管完井　出处：《西安石油大学》2017年硕士论文　论文类型：学位论文

【摘要】：随着我国石油工业的发展,海上石油开发逐渐受到重视。燃爆压裂技术凭借其施工简便,成本低廉等优势在陆上油田广为应用;但是由于海上油田大多采用筛管完井,高能气体压裂过程中产生的高温、高压气体通过筛管上的孔缝进入地层,在此过程中可能会对筛管基管和筛管的防砂性造成损害,因此该技术在海上油田目前应用却很少。为了实现海上油田燃爆压裂技术的应用,所以就需要通过地面模拟实验来对筛管完井燃爆压裂的可行性进行研究。筛管完井燃爆压裂的可行性研究的主要内容包括燃爆压裂机理研究、燃爆压裂地面模拟研究、仿真模拟研究、燃爆压裂井筒压井液运动规律研究以及压裂裂缝扩展规律研究等内容。通过燃爆压裂理论和燃爆压裂设计的研究,对施工过程中套管的安全性作出评价;通过地面模拟实验和挡砂实验,分别对燃爆前后筛管的安全性和挡砂能力作出判断;基于ANSYS15.0/LS_DYNA软件仿真模拟燃爆过程,对爆燃过程中压力冲击波的传播规律以及不同位置压力随时间变化关系进行研究;根据燃爆压裂理论的研究,建立数学模型,并对该模型进行求解,以此为主要思路研发燃爆压裂参数计算软件。本文对筛管完井燃爆压裂的可行性进行了较为全面的研究,通过一系列实验对爆燃后筛管的安全性和防砂能力作出了明确分析评价。研究过程中严格按照相关规定进行实验,研究结果对于海上油田高能气体压裂的应用具有很大的指导意义。
[Abstract]:With the development of petroleum industry in China, offshore oil development has been paid more and more attention. Blasting fracturing technology has been widely used in onshore oil fields by virtue of its advantages of simple construction and low cost; however, sieve pipe completion is widely used in offshore oil fields. The high temperature and high pressure gas produced during the high energy gas fracturing process enter the formation through the holes in the sieve pipe, which may cause damage to the sand control of the sieve pipe base pipe and the screen pipe. Therefore, the application of this technology in offshore oil fields is rare. In order to realize the application of explosion fracturing technology in offshore oil fields, Therefore, it is necessary to study the feasibility of sieve tube completion blasting fracturing through ground simulation experiments. The main contents of the feasibility study of sieve tube completion detonation fracturing include the research on the mechanism of explosion fracturing, the ground simulation study of explosion fracturing. Through the research of blasting fracturing theory and design, the safety of casing is evaluated. Through ground simulation experiment and sand blocking experiment, the safety and sand retention ability of sieve tube before and after blasting are judged, and the process of burning explosion is simulated based on ANSYS15.0/LS_DYNA software. The propagation law of pressure shock wave in deflagration process and the relationship between pressure at different locations and time are studied, and the mathematical model is established according to the theory of explosive fracturing, and the model is solved. In this paper, the feasibility of flaring fracturing in sieve tube completion well is studied comprehensively. Through a series of experiments, the safety and sand control ability of the sieve tube after deflagration are analyzed and evaluated. The results are of great significance for the application of high-energy gas fracturing in offshore oil fields.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE53

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