發(fā)布時間：2018-06-24 05:38

  本文選題：PDC鉆頭 + 計算機仿真��； 參考：《西南石油大學(xué)》2015年碩士論文

【摘要】：采用仿真方法進行PDC鉆頭切削參數(shù)的模擬計算是鉆頭個性化設(shè)計的重要技術(shù)手段。為提高PDC鉆頭鉆進仿真的效率及精度、可視化效果以及與鉆頭三維設(shè)計系統(tǒng)實現(xiàn)無縫連接,本論文利用UG二次開發(fā)技術(shù)開展了PDC鉆頭鉆進仿真方法的研究。 本文在PDC鉆頭幾何學(xué)、運動學(xué)及互作用力學(xué)理論的基礎(chǔ)上,利用UG軟件的參數(shù)化建模及掃掠功能建立虛擬鉆頭模型和切削齒的切削軌跡模型；將原有仿真方法中建模難度較大的PDC虛擬切削仿真以及切削參數(shù)的計算等模型,利用UG的布爾運算功能實現(xiàn)；建立了基于UG二次開發(fā)功能開發(fā)的PDC鉆頭鉆進仿真系統(tǒng)軟件。 針對特殊工藝井鉆井工況仿真需求,根據(jù)復(fù)合鉆井中PDC鉆頭復(fù)合運動和導(dǎo)向運動特性,在理想工況PDC鉆頭鉆進仿真方法的基礎(chǔ)上改變運動學(xué)模型,利用微元法建立了切削齒切削軌跡模型；拓展了UG建模中相交線的計算功能,解決了復(fù)雜運動工況下切削參數(shù)的計算難題。 針對復(fù)雜地層情況下PDC鉆頭鉆進硬夾層工況,在復(fù)雜運動工況PDC鉆頭鉆進仿真方法的基礎(chǔ)上開發(fā)了穿越夾層鉆進仿真模型,可以仿真分析在軟硬交錯地層中鉆進下部地層時,各切削齒切削上下部地層的切削量和切削力變化關(guān)系。 本論文運用模塊化設(shè)計方法,將PDC鉆頭鉆進仿真系統(tǒng)軟件分為：輸入模塊、仿真模塊、分析模塊、輸出模塊�？梢愿鶕�(jù)用戶需求選擇模塊組合,去除不必要模塊的運行時間,提高效率和軟件使用的靈活性。 研究結(jié)果表明,本文的切削量參數(shù)仿真結(jié)果與既有數(shù)值仿真方法計算結(jié)果變化趨勢相同,并且具有更高精度。對比切削力仿真結(jié)果與有限元仿真方法仿真結(jié)果表明,兩種模擬方法的切削力變化趨勢相同,但本論文建立的仿真軟件仿真效率更高。 本文的研究結(jié)果為PDC鉆頭鉆進仿真提供了一種新的方法,有助于提高個性化PDC鉆頭產(chǎn)品的開發(fā)效率。
[Abstract]:The simulation method of PDC bit cutting parameters is an important technical means of bit individualized design. In order to improve the efficiency and precision of PDC bit drilling simulation, the visualization effect and the seamless connection with the 3D design system of PDC bit, this paper makes use of UG secondary development technology to develop the simulation method of PDC bit drilling. Based on the theory of PDC bit geometry, kinematics and interaction force, the virtual bit model and the cutting path model of cutting teeth are established by the parameterized modeling and sweep function of UG software. The PDC virtual cutting simulation and cutting parameter calculation model, which is difficult to model in the original simulation method, is realized by the Boolean operation function of UG, and the software of PDC bit drilling simulation system based on the secondary development function of UG is established. According to the requirements of drilling simulation of special process wells, according to the characteristics of PDC bit's compound motion and steering motion in compound drilling, the kinematics model of PDC bit is changed on the basis of the simulation method of PDC bit drilling under ideal conditions. The cutting path model of cutting teeth is established by using the micro-element method, and the calculation function of intersection line in UG modeling is extended, and the difficult problem of calculating cutting parameters under complex moving conditions is solved. In view of the hard interlayer drilling condition of PDC bit in complex formation, the simulation model of drilling through interlayer is developed on the basis of the simulation method of PDC bit drilling under complex moving condition, which can be simulated and analyzed when drilling into the lower stratum in soft and hard interlaced formation. The relationship between cutting quantity and cutting force of the upper and lower strata of each cutting tooth. In this paper, the software of PDC bit drilling simulation system is divided into input module, simulation module, analysis module and output module by means of modular design method. The combination of modules can be selected according to the needs of users to remove the running time of unnecessary modules and to improve the efficiency and flexibility of software use. The results show that the simulation results of cutting parameters in this paper are the same as those calculated by the existing numerical simulation method and have higher accuracy. By comparing the cutting force simulation results with the finite element simulation results, it is shown that the two simulation methods have the same trend of cutting force change, but the simulation software established in this paper is more efficient. The results of this paper provide a new method for drilling simulation of PDC bit and help to improve the development efficiency of personalized PDC bit products.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TE921.1

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本文編號：2060267