PDC-牙轮复合钻头布齿设计技术研究
发布时间：2018-08-27 07:01
【摘要】：PDC-牙轮复合钻头将常规PDC钻头和牙轮钻头的破岩方式和结构特点相结合,相比常规PDC钻头或者牙轮钻头,PDC-牙轮复合钻头在硬地层、夹层、致密的研磨性地层等复杂地层中的破岩钻进效率高,能够显著提高钻速并获得很好的钻进稳定性,并拥有较高的钻头寿命,在导向钻进中可以获得较大的造斜率,并且拥有较好的定向稳定性,钻进时扭矩波动较小,钻进时更加平稳。 复合钻头的开发设计对解决难钻地层破岩等问题具有重要的意义。合理的布齿设计是保证PDC-牙轮复合钻头高效稳定工作的关键。本文在已有的PDC钻头和牙轮钻头布齿设计理论的基础上,开展针对PDC-牙轮复合钻头布齿设计理论和方法的研究,开发了PDC-牙轮复合钻头布齿设计计算机软件、数字化仿真分析软件。 为了深入了解PDC-牙轮复合钻头的破岩机理、复合结构和布齿设计方法,本文进行了以下几个方面的研究,主要包括： 1.开展了PDC-牙轮复合钻头破岩机理和失效形式的研究,深入剖析了复合钻头的破岩方式和破岩机理,以及相比常规钻头而言复合钻头的破岩优势； 2.开展了复合钻头布齿设计的理论研究,并提出了基于能量分配率的复合钻头布齿设计方法并研究了各个复合结构参数对破岩能量分配的影响； 3.编写了PDC-牙轮复合钻头布齿设计软件,为布齿设计提供高效的技术手段,利用布齿设计软件,对某尺寸的钻头进行了布齿设计； 4.研究了基于PDC-牙轮复合钻头破岩仿真软件的布齿方案分析方法,并通过输出数据对布齿方案进行分析； 本文所做的理论研究和布齿设计技术研究,对PDC-牙轮复合钻头的设计、评价以及对结构设计进行优化调整具有重要的研究意义。
[Abstract]:PDC- cone composite bit combines the rock breaking mode and structure characteristics of conventional PDC bit and cone bit. Compared with conventional PDC bit or cone bit, PDC-cone composite bit is intercalated in hard stratum. The drilling efficiency of rock breaking in dense abrasive strata and other complex formations is high, the drilling speed can be significantly increased and the drilling stability can be obtained, and the bit life can be long, and a large slope can be obtained in guiding drilling. And has good directional stability, drilling torque fluctuation is small, drilling more stable. The development and design of composite bit is of great significance to solve the problem of rock breaking in hard drilling formation. Reasonable design of teeth is the key to ensure the high efficiency and stability of PDC- cone bit. On the basis of the existing PDC bit and cone bit tooth placement design theory, this paper studies the design theory and method of PDC- cone composite bit, and develops the computer software of PDC- cone compound bit tooth placement design. Digital simulation and analysis software. In order to deeply understand the rock breaking mechanism, composite structure and tooth distribution design method of PDC- cone composite bit, the following aspects have been studied in this paper, including: 1. In this paper, the rock breaking mechanism and failure mode of PDC- cone composite bit are studied, and the rock breaking mode and rock breaking mechanism of the composite bit are deeply analyzed, as well as the rock breaking advantage of the composite bit compared with the conventional bit; 2. In this paper, the theoretical research on the design of composite bit teeth is carried out, and the design method of composite bit tooth placement based on energy distribution rate is put forward, and the influence of each compound structure parameter on the energy distribution of rock breaking is studied. 3. The design software of PDC- compound bit tooth distribution is compiled, which provides an efficient technical means for the tooth distribution design. Using the tooth arrangement design software, the tooth distribution design of a certain size bit is carried out; 4. This paper studies the analysis method of the tooth arrangement scheme based on the PDC- rock breaking simulation software, and analyzes the tooth arrangement scheme through the output data. It is of great significance to study the design, evaluation and structural optimization of PDC- compound bit.
【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】：TE921.1
本文编号：2206484
[Abstract]:PDC- cone composite bit combines the rock breaking mode and structure characteristics of conventional PDC bit and cone bit. Compared with conventional PDC bit or cone bit, PDC-cone composite bit is intercalated in hard stratum. The drilling efficiency of rock breaking in dense abrasive strata and other complex formations is high, the drilling speed can be significantly increased and the drilling stability can be obtained, and the bit life can be long, and a large slope can be obtained in guiding drilling. And has good directional stability, drilling torque fluctuation is small, drilling more stable. The development and design of composite bit is of great significance to solve the problem of rock breaking in hard drilling formation. Reasonable design of teeth is the key to ensure the high efficiency and stability of PDC- cone bit. On the basis of the existing PDC bit and cone bit tooth placement design theory, this paper studies the design theory and method of PDC- cone composite bit, and develops the computer software of PDC- cone compound bit tooth placement design. Digital simulation and analysis software. In order to deeply understand the rock breaking mechanism, composite structure and tooth distribution design method of PDC- cone composite bit, the following aspects have been studied in this paper, including: 1. In this paper, the rock breaking mechanism and failure mode of PDC- cone composite bit are studied, and the rock breaking mode and rock breaking mechanism of the composite bit are deeply analyzed, as well as the rock breaking advantage of the composite bit compared with the conventional bit; 2. In this paper, the theoretical research on the design of composite bit teeth is carried out, and the design method of composite bit tooth placement based on energy distribution rate is put forward, and the influence of each compound structure parameter on the energy distribution of rock breaking is studied. 3. The design software of PDC- compound bit tooth distribution is compiled, which provides an efficient technical means for the tooth distribution design. Using the tooth arrangement design software, the tooth distribution design of a certain size bit is carried out; 4. This paper studies the analysis method of the tooth arrangement scheme based on the PDC- rock breaking simulation software, and analyzes the tooth arrangement scheme through the output data. It is of great significance to study the design, evaluation and structural optimization of PDC- compound bit.
【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】：TE921.1
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