【摘要】：PDC-牙輪復(fù)合鉆頭將常規(guī)PDC鉆頭和牙輪鉆頭的破巖方式和結(jié)構(gòu)特點(diǎn)相結(jié)合,相比常規(guī)PDC鉆頭或者牙輪鉆頭,PDC-牙輪復(fù)合鉆頭在硬地層、夾層、致密的研磨性地層等復(fù)雜地層中的破巖鉆進(jìn)效率高,能夠顯著提高鉆速并獲得很好的鉆進(jìn)穩(wěn)定性,并擁有較高的鉆頭壽命,在導(dǎo)向鉆進(jìn)中可以獲得較大的造斜率,并且擁有較好的定向穩(wěn)定性,鉆進(jìn)時(shí)扭矩波動(dòng)較小,鉆進(jìn)時(shí)更加平穩(wěn)。 復(fù)合鉆頭的開(kāi)發(fā)設(shè)計(jì)對(duì)解決難鉆地層破巖等問(wèn)題具有重要的意義。合理的布齒設(shè)計(jì)是保證PDC-牙輪復(fù)合鉆頭高效穩(wěn)定工作的關(guān)鍵。本文在已有的PDC鉆頭和牙輪鉆頭布齒設(shè)計(jì)理論的基礎(chǔ)上,開(kāi)展針對(duì)PDC-牙輪復(fù)合鉆頭布齒設(shè)計(jì)理論和方法的研究,開(kāi)發(fā)了PDC-牙輪復(fù)合鉆頭布齒設(shè)計(jì)計(jì)算機(jī)軟件、數(shù)字化仿真分析軟件。 為了深入了解PDC-牙輪復(fù)合鉆頭的破巖機(jī)理、復(fù)合結(jié)構(gòu)和布齒設(shè)計(jì)方法,本文進(jìn)行了以下幾個(gè)方面的研究,主要包括： 1.開(kāi)展了PDC-牙輪復(fù)合鉆頭破巖機(jī)理和失效形式的研究,深入剖析了復(fù)合鉆頭的破巖方式和破巖機(jī)理,以及相比常規(guī)鉆頭而言復(fù)合鉆頭的破巖優(yōu)勢(shì)； 2.開(kāi)展了復(fù)合鉆頭布齒設(shè)計(jì)的理論研究,并提出了基于能量分配率的復(fù)合鉆頭布齒設(shè)計(jì)方法并研究了各個(gè)復(fù)合結(jié)構(gòu)參數(shù)對(duì)破巖能量分配的影響； 3.編寫了PDC-牙輪復(fù)合鉆頭布齒設(shè)計(jì)軟件,為布齒設(shè)計(jì)提供高效的技術(shù)手段,利用布齒設(shè)計(jì)軟件,對(duì)某尺寸的鉆頭進(jìn)行了布齒設(shè)計(jì)； 4.研究了基于PDC-牙輪復(fù)合鉆頭破巖仿真軟件的布齒方案分析方法,并通過(guò)輸出數(shù)據(jù)對(duì)布齒方案進(jìn)行分析； 本文所做的理論研究和布齒設(shè)計(jì)技術(shù)研究,對(duì)PDC-牙輪復(fù)合鉆頭的設(shè)計(jì)、評(píng)價(jià)以及對(duì)結(jié)構(gòu)設(shè)計(jì)進(jìn)行優(yōu)化調(diào)整具有重要的研究意義。
[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.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE921.1

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本文編號(hào)：2206484