| 砂岩基质酸化中的化学平衡研究 |
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| 引用本文： | 韩继勇. 砂岩基质酸化中的化学平衡研究[J]. 西南石油大学学报(社会科学版), 2016, 21(2): 57-61. DOI: 10.3863/j.issn.1000-2634.1999.02.16 |
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| 作者姓名： | 韩继勇 |
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| 作者单位： | 1.石油勘探开发科学研究院廊坊分院压裂酸化中心,河北 廊坊 457001;2.清华大学化学系 |
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| 摘 要： | 纯高岭土和油田实际岩心的流动模拟试验都验证了在相同温度下,加入盐酸会加快氟硅酸与铝硅酸盐的二次反应。在砂岩基质酸化过程中,H2SiF6-AlFx(3-x)+ -HCl 之间存在一种化学平衡,该平衡用以控制氢氟酸与铝硅酸盐的一次反应和二次反应的化学计量系数。在土酸酸化反应中,盐酸不仅用来溶解碳酸盐矿物,而且具有调节氟硅、氟铝配合物平衡的另一作用;盐酸的浓度越高,F/Al越低,所造成的酸化二次伤害几率越小。
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| 关 键 词： | 化学平衡 基质酸化 砂岩 核磁共振 光谱仪 |
| 收稿时间： | 1998-12-25 |
IDENTIFICATION OF DRILL-STRING SYSTEM WHILE DRILLING |
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| Han Ji-yong. IDENTIFICATION OF DRILL-STRING SYSTEM WHILE DRILLING[J]. Journal of Southwest Petroleum University(Social Sciences Edition), 2016, 21(2): 57-61. DOI: 10.3863/j.issn.1000-2634.1999.02.16 |
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| Authors: | Han Ji-yong |
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| Affiliation: | Fracturing and Acidizing Technical Ser-vice Center Langfang Branch Institute of Petroleum E.& D.CNPC |
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| Abstract: | Drill-string vibration system while is very complicated dynamic system, which has uncertain boundary conditions and randomness. Based on random signal theory, in order to quantitatively research drilling string by vibration measurement method, the article sketches out a new method——the identification of drill——string system using the cross correlation function. Using input signal, and output signal, the impulse response of drill-string is obtained. Some problems of drill engineering (critical rotation speed of frill-string, drill-string resonances, interaction between the drill string and the borehole wall and lithology of formation driied )are discussed. |
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| Keywords: | drilling seismic correlation analysis system identification |
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