本文選題：數(shù)字巖心 + 過程法　； 參考：《地球物理學(xué)進(jìn)展》2017年05期

【摘要】：在數(shù)字巖石物理中數(shù)字巖心是彈性參數(shù)模擬的基礎(chǔ),現(xiàn)有的數(shù)字巖心建模方法雖然較多,但一般不能滿足彈性參數(shù)模擬對骨架所提出的要求.過程法以巖石粒徑分布曲線為約束條件構(gòu)建數(shù)字巖心,是一種比較靈活的數(shù)字巖心建模方法.本文根據(jù)前人研究結(jié)果在過程法的壓實過程中用一面狀像素層表示顆粒與顆粒間的接觸邊界,使相鄰的骨架顆粒能夠相互區(qū)分,提高了數(shù)字巖心骨架結(jié)構(gòu)的精細(xì)程度.在彈性參數(shù)模擬中,當(dāng)變化數(shù)字巖心中的顆粒、顆粒接觸邊界和膠結(jié)物的彈性模量時,數(shù)字巖心的彈性模量發(fā)生相應(yīng)的變化.數(shù)字巖心彈性模量的變化量與組成物質(zhì)的體積含量及其彈性模量賦值有關(guān).這說明能夠利用數(shù)字巖石物理研究各種地質(zhì)和環(huán)境因素對巖石彈性性質(zhì)的影響.進(jìn)一步分析認(rèn)為,目前的建模方法對數(shù)字巖心的定義還不夠充分,利用數(shù)字巖石物理解決實際地質(zhì)問題尚有難度.
[Abstract]:Digital core is the foundation of elastic parameter simulation in digital rock physics. Although there are many digital core modeling methods, it can not meet the requirements of elastic parameter simulation for skeleton. The process method is a flexible digital core modeling method, which takes the rock particle size distribution curve as the constraint condition to construct digital core. In this paper, the contact boundary between particles and particles is expressed by a single pixel layer in the compaction process of the process method, according to the results of previous studies, the adjacent skeleton particles can be distinguished from each other, and the fine degree of the skeleton structure of digital core can be improved. In the simulation of elastic parameters, the elastic modulus of digital core changes when the particle, particle contact boundary and elastic modulus of cemented rock core are changed. The change of elastic modulus of digital core is related to the volume content and the value of elastic modulus. This shows that digital rock physics can be used to study the influence of various geological and environmental factors on the elastic properties of rock. Further analysis shows that the definition of digital core in current modeling method is not enough and it is difficult to use digital rock physics to solve practical geological problems.
【作者單位】： 油氣資源與勘探技術(shù)教育部重點實驗室(長江大學(xué));中國地質(zhì)大學(xué)地球物理與空間信息學(xué)院;
【基金】：地球內(nèi)部多尺度成像湖北省重點實驗室開放基金(SMIL-2017-10) 國家科技重大專項課題頁巖氣勘探地球物理技術(shù)研究(2017ZX05036-005)聯(lián)合資助
【分類號】：P618.13

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