本文選題：巖石物理實(shí)驗(yàn)　切入點(diǎn)：CT掃描　出處：《測(cè)井技術(shù)》2016年04期 　論文類(lèi)型：期刊論文

【摘要】：X射線CT掃描作為巖心孔隙結(jié)構(gòu)研究的主要手段之一,遇到的最主要的難題是微米CT無(wú)法識(shí)別微孔隙。納米CT能夠反映巖心微孔隙的信息,在一定程度上彌補(bǔ)微米CT掃描的不足。納米CT掃描巖樣的尺寸很小,即使對(duì)于均質(zhì)性較好的巖心,選取巖樣時(shí)的位置不同,得到的巖心參數(shù)也會(huì)有所差異,對(duì)于非均質(zhì)性強(qiáng)的巖心,結(jié)果差異會(huì)更大。針對(duì)該問(wèn)題提出利用CT掃描圖像與壓汞核磁共振資料結(jié)合構(gòu)建高精度三維數(shù)字巖心的方法。相比于微米掃描得到的數(shù)字巖心,該方法獲取的數(shù)字巖心在孔隙度和滲透率上都有較大提升,與實(shí)驗(yàn)結(jié)果更為接近,為在取心難、實(shí)驗(yàn)難的碳酸鹽巖、頁(yè)巖儲(chǔ)層開(kāi)展數(shù)字巖石物理實(shí)驗(yàn)奠定了基礎(chǔ)。
[Abstract]:As one of the main methods in the study of core pore structure, X-ray CT scan is one of the most difficult problems that micron CT can not identify micropores, and nano-CT can reflect the information of core micropores. To a certain extent, it can make up for the shortage of micron CT scanning. The size of rock samples scanned by nano-CT is very small. Even for the cores with good homogeneity, the core parameters will be different when the samples are selected in different positions. For the core with strong heterogeneity, the result will be more different. To solve this problem, a method of constructing 3D digital core with high accuracy by combining CT scanning image with mercury injection nuclear magnetic resonance data is proposed. Compared with the digital core obtained by micron scanning, The digital core obtained by this method has a great increase in porosity and permeability, which is closer to the experimental results, which lays a foundation for the digital rock physical experiments in carbonate rocks and shale reservoirs, which are difficult to coring and testing.
【作者單位】： 中國(guó)石油集團(tuán)測(cè)井有限公司;中國(guó)石油天然氣集團(tuán)測(cè)井重點(diǎn)實(shí)驗(yàn)室;中國(guó)石油大學(xué)(華東)地球科學(xué)與技術(shù)學(xué)院;西安石油大學(xué);
【基金】：中國(guó)石油集團(tuán)公司重大科技項(xiàng)目(2014A-3911) 中國(guó)石油股份公司重大科技專(zhuān)項(xiàng)(2014E-3205)
【分類(lèi)號(hào)】：TE31
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本文編號(hào)：1619541