| 宛新林*,刘荣华,杜赟,席道瑛,徐松林.用正弦波加载和超声实验研究饱和砂岩弛豫特征和衰减峰[J].实验力学,2014,29(3):368~373 |
| 用正弦波加载和超声实验研究饱和砂岩弛豫特征和衰减峰 |
| Experimental Study of Relaxation Characteristics and Attenuation Peak of Saturated Sandstones Based on Sine Wave Loading and Ultrasonic Test |
| 投稿时间：2013-09-13 修订日期：2013-11-29 |
| DOI：10.7520/1001-4888-13-143 |
| 中文关键词: 饱和砂岩 粘弹性 弛豫衰减规律 Biot峰 速度频散 |
| 英文关键词:saturated sandstone viscoelasticity relaxation attenuation regularities biot peak velocity dispersion |
| 基金项目:国家自然科学基金(40874093, 11272304)和安徽省教育厅自然科学基金(KJ2012A057)资助 |
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| 中文摘要: |
| 采用Metravib分析仪在-50℃～100℃温度条件及300～400Hz的正弦波作用下进行泵油饱和砂岩应力应变实验,获得了虚模量温度峰与对应实模量的剧烈亏损规律,显示出饱和砂岩有别于由衰减峰引起的典型粘弹性行为。利用超声法对饱和大理岩与花岗岩样品进行波速和衰减特性测试,获得了大理岩的Biot衰减峰变化规律。该研究对岩石物理理论模型的发展具有重要意义,可以利用岩层的衰减和波速频散特性进行油气藏的预测,降低勘探风险。 |
| 英文摘要: |
| Adopting Metravib analyser, under temperature condition from -50℃ to 100℃ and loading condition from 300 to 400Hz sine wave, pump oil saturated sandstone stress-strain experiment was carried out. The temperature peak severe loss of virtual modulus corresponding to that of real modulus was obtained. It shows that saturated sandstone differs from the typical viscoelastic behavior induced by attenuation peak. In addition, using ultrasonic method, wave velocity and attenuation characteristics of saturated marble and granite samples were tested, the Biot attenuation peak variation of marble was obtained. This study has important meaning for the development of petrophysics theoretical model. Stratum attenuation and velocity dispersion characteristics are useful for oil and gas reservoir prediction, reduce exploration risk. |
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