饱和水与干燥碳酸盐岩声波各向异性研究
发布时间：2018-11-27 11:15
【摘要】：为了解碳酸盐岩在饱和水和干燥条件下的声波传播规律,通过分别对烘干和饱和水后方形碳酸盐岩岩样进行声波物理实验和频谱数值分析,对碳酸盐岩的声波波形、传播速度和波谱特征进行了研究。结果表明:声波透射岩心后,波形疏松,周期明显增大,且饱和水后周期进一步增大,而最大振幅位置提前;岩样的波速和主频率均具有明显的各向异性特征,裂缝越发育,则波速和主频率的各向异性系数均越大,纵波速度和主频率在垂直裂缝方向均明显降低;干燥岩心的波速和主频率的各向异性系数均可以用来评价岩心的各向异性特征,主频率对岩心各向异性特征更加敏感,岩心饱和水后,各向异性系数大大减小。该研究为正确利用声波测井资料以及认识碳酸盐岩储层的各向异性特征提供了依据。
[Abstract]:In order to understand the acoustic wave propagation law of carbonate rock in saturated water and dry condition, the acoustic wave of carbonate rock is analyzed by acoustic physical experiment and spectrum numerical analysis of square carbonate rock sample after drying and saturated water, respectively. The propagation velocity and spectral characteristics are studied. The results show that the wave shape is loose, the period increases obviously, and the period increases further after saturated water, but the position of maximum amplitude is advanced. The wave velocity and main frequency of rock samples have obvious anisotropic characteristics. The more developed the fracture, the greater the anisotropy coefficient of wave velocity and main frequency, and the lower the longitudinal wave velocity and main frequency are in the vertical fracture direction. Both the wave velocity and the anisotropy coefficient of the main frequency of the dry core can be used to evaluate the anisotropic characteristics of the core. The main frequency is more sensitive to the anisotropic characteristic of the core, and the anisotropy coefficient of the core decreases greatly after saturated water. This study provides a basis for the correct use of acoustic logging data and the recognition of anisotropic characteristics of carbonate reservoirs.
【作者单位】： 浙江大学海洋学院;
【基金】：国家自然科学基金重点项目“南方海相层系油气保存条件评价理论与方法研究”(编号:40839902) 国家重点实验室开放基金项目“黔中隆起及周缘地区流体作用与油气保存条件关系研究”(编号:PLC201002)资助
【分类号】：P618.13;P631.81
[Abstract]:In order to understand the acoustic wave propagation law of carbonate rock in saturated water and dry condition, the acoustic wave of carbonate rock is analyzed by acoustic physical experiment and spectrum numerical analysis of square carbonate rock sample after drying and saturated water, respectively. The propagation velocity and spectral characteristics are studied. The results show that the wave shape is loose, the period increases obviously, and the period increases further after saturated water, but the position of maximum amplitude is advanced. The wave velocity and main frequency of rock samples have obvious anisotropic characteristics. The more developed the fracture, the greater the anisotropy coefficient of wave velocity and main frequency, and the lower the longitudinal wave velocity and main frequency are in the vertical fracture direction. Both the wave velocity and the anisotropy coefficient of the main frequency of the dry core can be used to evaluate the anisotropic characteristics of the core. The main frequency is more sensitive to the anisotropic characteristic of the core, and the anisotropy coefficient of the core decreases greatly after saturated water. This study provides a basis for the correct use of acoustic logging data and the recognition of anisotropic characteristics of carbonate reservoirs.
【作者单位】： 浙江大学海洋学院;
【基金】：国家自然科学基金重点项目“南方海相层系油气保存条件评价理论与方法研究”(编号:40839902) 国家重点实验室开放基金项目“黔中隆起及周缘地区流体作用与油气保存条件关系研究”(编号:PLC201002)资助
【分类号】：P618.13;P631.81
【参考文献】
相关期刊论文 前9条
1 张明明;梁利喜;蒋少龙;;不同孔隙结构碳酸盐岩对声波时频特性的影响[J];断块油气田;2016年06期
2 林玫玲;黄真萍;孙艳坤;林志敏;邱思明;;裂隙岩体声波响应特征与岩体质量关系[J];地下空间与工程学报;2013年S1期
3 刘向君;王森;刘洪;朱洪林;陈乔;龙瀛;;碳酸盐岩含气饱和度对超声波衰减特性影响的研究[J];石油地球物理勘探;2012年06期
4 刘向君;杨超;陈乔;王森;陈春宇;;孔洞型碳酸盐岩地层超声波实验研究[J];天然气工业;2011年08期
5 陈博涛;王祝文;丁阳;岳崇旺;;Hilbert-Huang变换在阵列声波测井信号时频分析中的应用[J];岩性油气藏;2010年01期
6 胡红;罗宁;李联新;;阵列声波资料在测井解释中的应用[J];岩性油气藏;2008年02期
7 张学涛;王祝文;原镜海;;利用时频分析方法在阵列声波测井中区分油水层[J];岩性油气藏;2008年01期
8 周治国;朱合华;陈伟;;饱水岩样声波传播规律的试验研究[J];岩石力学与工程学报;2006年05期
9 赵明阶,吴德伦;小波变换理论及其在岩石声学特性研究中的应用[J];岩土工程学报;1998年06期
【共引文献】
相关期刊论文 前10条
1 谢冰;白利;赵艾琳;张红英;王s，
本文编号：2360544
本文链接：https://www.wllwen.com/kejilunwen/shiyounenyuanlunwen/2360544.html
