發(fā)布時(shí)間：2018-03-19 23:18

  本文選題：泥質(zhì)巖　切入點(diǎn)：孔隙結(jié)構(gòu)　出處：《巖礦測(cè)試》2017年01期 　論文類型：期刊論文

【摘要】：微觀孔隙作為泥質(zhì)巖的有效儲(chǔ)集空間,其孔隙結(jié)構(gòu)參數(shù)是作為氣藏評(píng)價(jià)及資源量估算的重要依據(jù)。本文應(yīng)用氮?dú)馕椒?NAM)、核磁共振法(NMR)、氬離子拋光及場(chǎng)發(fā)射掃描電鏡(AIP-FESEM)研究川西須五段泥質(zhì)巖微觀孔隙特征,結(jié)果表明:1氬離子拋光及場(chǎng)發(fā)射掃描電鏡在表征微觀孔隙形態(tài)與類別時(shí)有一定優(yōu)勢(shì),但定量表征孔隙參數(shù)時(shí),受圖像二值化閾值的影響,表征結(jié)果偏差較大,可結(jié)合氮?dú)馕椒▉?lái)定量表征其孔徑大小;2核磁共振受巖石骨架影響小,能夠更精細(xì)反映巖石的物性條件,可定量計(jì)算孔隙度與可動(dòng)流體飽和度,但對(duì)樣品的孔隙形態(tài)反映較差;3綜合上述三種方法,在須五段泥質(zhì)巖中可識(shí)別出一定量的納米級(jí)中、大孔,孔徑大多介于幾十納米到幾百納米之間,孔隙連通性差,孔隙度主要介于2.3%~7.4%之間,孔隙類型以粒間孔、晶間孔最發(fā)育,有機(jī)孔隙、微裂縫次之,粒內(nèi)孔隙最不發(fā)育�？傮w而言,融合了三種技術(shù)方法能更精確、更全面地反映泥質(zhì)巖孔隙結(jié)構(gòu)特征,能得到更完善的儲(chǔ)層孔隙結(jié)構(gòu)參數(shù),在定量表征泥質(zhì)巖孔隙結(jié)構(gòu)中具有廣泛的應(yīng)用前景。
[Abstract]:As the effective reservoir micro pore argillaceous rock in space, the pore structure parameters is an important basis for the estimation of gas reservoir evaluation and amount of resources. In this paper the application of nitrogen adsorption method (NAM), nuclear magnetic resonance spectroscopy (NMR), argon ion polishing and field emission scanning electron microscopy (AIP-FESEM) to study the micro pore characteristics, five a mud rock shows: 1 argon ion polishing and field emission scanning electron microscopy has certain advantages in the characterization of pore morphology and category, but the quantitative characterization of pore parameters, the influence of threshold value of the two images, the characterization results of large deviation, can be combined with nitrogen adsorption method to quantitatively characterize the pore size of 2 nuclear magnetic resonance; the rock is small, can fine reflects the physical conditions, quantitative calculation of porosity and saturation of mobile fluid, but the pore morphology of the samples reflect the poor; 3 of the above three methods, in paragraph five shall argillaceous rock May be recognized in a certain amount of nano scale, big hole, aperture are range from tens of nanometers to hundreds of nanometers, pore connectivity, porosity is between 2.3%~7.4%, the pore types are mainly intergranular pore, intercrystalline pore and the development of organic pore, micro cracks of intragranular pore's development. Overall, the fusion of the three techniques can be more accurate, more fully reflect the pore structure characteristics of argillaceous rock, reservoir pore structure parameters can be more perfect, and has wide application prospect in the quantitative characterization of pore structure of mud.

【作者單位】： 中國(guó)石化西南油氣分公司勘探開發(fā)研究院;中國(guó)石化西南油氣分公司開發(fā)管理部;西南石油大學(xué)資源與環(huán)境學(xué)院;
【基金】：中石化西南分公司開發(fā)類支撐項(xiàng)目(GJ-332-1426)
【分類號(hào)】：P618.13

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