本文選題：虛擬培訓(xùn) + 場(chǎng)景優(yōu)化��； 參考：《東北石油大學(xué)》2015年碩士論文

【摘要】：虛擬現(xiàn)實(shí)技術(shù)能提供一種逼真、交互式的三維環(huán)境,因此,各領(lǐng)域?qū)λ难芯吭絹?lái)越重視,并取得了極大的進(jìn)步。人們意識(shí)到將復(fù)雜培訓(xùn)與其進(jìn)行結(jié)合,會(huì)帶來(lái)許多傳統(tǒng)培訓(xùn)所不具備的優(yōu)勢(shì),這一想法已經(jīng)得到社會(huì)各領(lǐng)域的一致認(rèn)可。油井壓裂施工作業(yè)操作繁瑣、作業(yè)設(shè)備多、作業(yè)環(huán)境惡劣、作業(yè)過(guò)程不可見(jiàn)、技術(shù)含量高、施工的難度和風(fēng)險(xiǎn)較大,十分容易造成嚴(yán)重的財(cái)產(chǎn)損失和人員傷亡事故。因此,油田企業(yè)十分重視對(duì)壓裂技術(shù)的培訓(xùn),然而傳統(tǒng)的壓裂培訓(xùn)常受到空間、時(shí)間、次數(shù)的限制,尤其是井下的作業(yè)在現(xiàn)實(shí)中無(wú)法感受到,大多通過(guò)實(shí)際操作經(jīng)驗(yàn)的累積來(lái)完成,很難實(shí)現(xiàn)員工對(duì)壓裂知識(shí)的掌握。將虛擬培訓(xùn)技術(shù)與油田壓裂施工的培訓(xùn)結(jié)合,為員工提供一個(gè)逼真的虛擬壓裂施工環(huán)境,將大大提高員工的專業(yè)技能。但為了實(shí)現(xiàn)逼真的仿真效果,虛擬系統(tǒng)中資源數(shù)據(jù)會(huì)非常大,這給系統(tǒng)的動(dòng)態(tài)繪制造成了很大負(fù)擔(dān),目前針對(duì)如何實(shí)現(xiàn)復(fù)雜的場(chǎng)景優(yōu)化仍是一個(gè)應(yīng)用研究的熱點(diǎn),更是一個(gè)難點(diǎn)。本文設(shè)計(jì)了一套基于油田壓裂施工的仿真培訓(xùn)系統(tǒng),目的是通過(guò)該系統(tǒng),真實(shí)的還原壓裂施工現(xiàn)場(chǎng)及壓裂施工的全過(guò)程。為了解決因逼真效果造成的系統(tǒng)過(guò)于龐大、系統(tǒng)在網(wǎng)頁(yè)上加載慢且運(yùn)行時(shí)畫(huà)面出現(xiàn)嚴(yán)重的閃爍和卡頓的現(xiàn)象,本文運(yùn)用一種基于Virtools中LOD技術(shù)場(chǎng)景優(yōu)化的改進(jìn)方法。該方法結(jié)合了LOD技術(shù),大范圍場(chǎng)景分塊以及視點(diǎn)相關(guān)技術(shù),通過(guò)科學(xué)系統(tǒng)的實(shí)驗(yàn)驗(yàn)證,該方法很好的解決了上述問(wèn)題。在模型簡(jiǎn)化過(guò)程中,發(fā)現(xiàn)有時(shí)模型的整體輪廓會(huì)遭到破壞。因此本文深入地研究了漸進(jìn)網(wǎng)格算法并進(jìn)行了相關(guān)實(shí)驗(yàn)。本文實(shí)現(xiàn)的壓裂仿真培訓(xùn)系統(tǒng),完全遵照壓裂施工工藝流程及標(biāo)準(zhǔn)操作規(guī)程,提供了良好的交互學(xué)習(xí)功能。本文將LOD技術(shù)、大范圍場(chǎng)景分塊和視點(diǎn)相關(guān)技術(shù)進(jìn)行結(jié)合,對(duì)系統(tǒng)進(jìn)行優(yōu)化處理,在場(chǎng)景運(yùn)行時(shí),滿足復(fù)雜場(chǎng)景實(shí)時(shí)繪制的需求。
[Abstract]:Virtual reality technology can provide a realistic and interactive 3D environment. Therefore, more and more attention has been paid to it in various fields and great progress has been made. People realize that the combination of complex training and training will bring many advantages that traditional training does not have. This idea has been unanimously recognized in all fields of society. The operation of fracturing in oil wells is complicated, the operation equipment is many, the working environment is bad, the operation process is invisible, the technical content is high, the difficulty and risk of construction are great, and it is easy to cause serious property losses and casualties. Therefore, oil field enterprises attach great importance to the training of fracturing technology. However, the traditional fracturing training is often limited by space, time and times, especially the downhole operation can not be felt in reality. Most of them are accomplished by the accumulation of practical experience, so it is difficult to master the knowledge of fracturing. Combining the virtual training technology with the training of oil field fracturing construction, providing a lifelike virtual fracturing environment for the staff, will greatly improve the professional skills of the employees. However, in order to realize the realistic simulation effect, the resource data in the virtual system will be very large, which creates a great burden on the dynamic rendering of the system. At present, how to realize the complex scene optimization is still a hot topic in the application research. It is also a difficult point. In this paper, a set of simulation training system based on oilfield fracturing operation is designed. The purpose of this system is to truly restore the fracturing site and the whole process of fracturing operation. In order to solve the problem that the system caused by lifelike effect is too large, the system loads slowly on the web page, and the running picture appears serious flicker and the phenomenon of Catton, this paper uses an improved method of scene optimization based on LOD technology in Virtools. This method combines LOD technology, large-scale scene partitioning and viewpoint correlation technology, and is verified by scientific system. The method solves the above problems well. In the process of model simplification, it is found that sometimes the whole profile of the model will be destroyed. In this paper, the progressive mesh algorithm is studied and some experiments are carried out. The fracturing simulation training system realized in this paper completely complies with the fracturing operation process and standard operating rules, and provides a good interactive learning function. In this paper, the LOD technology, large-scale scene partitioning and view related technology are combined to optimize the system processing, and to meet the needs of real-time rendering of complex scenes when the scene is running.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE357.1;TP391.9

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本文編號(hào)：2021326