Acoustic velocity and electrical resistance of hydrate bearing sediments
Acoustic velocity and electrical resistance of hydrate bearing sediments
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DOI：
10.1016/j.petrol.2009.09.001
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发表时间：
2010
影响因子：
--
通讯作者：
S. Ren;Yongjun Liu;YiXi Liu;Weidong Zhang
中科院分区：
文献类型：
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作者：
S. Ren;Yongjun Liu;YiXi Liu;Weidong Zhang
海底天然气水合物储层的表征是海底天然气水合物资源勘探开发的重要内容。固体水合物能够填充砂粒形成的基质空隙，改变其胶结状态，对砂岩基质的电阻率和声速有很大影响。在这项研究中，实验已经进行了测量的超声波速度和电阻在一个大型的填砂模拟海底沉积物中的水合物形成的条件。揭示了水合物对含水合物砂岩基质电阻率和超声波速度的影响，并建立了模型。该数据可用于测井以确定水合物饱和度和含水合物地层的其它性质。
Characterization of natural gas hydrate bearing formations is important in the exploration and development of gas hydrate resources in subsea sediments. Solid hydrates can fill the voids of the matrix formed by sand grains and change their cementation condition, which may have a great impact on the electrical resistance and sound velocity of the sand matrix. In this study, experiments have been conducted to measure the ultrasonic velocity and electrical resistance in a large sandpack simulating the conditions of hydrate formation in subsea sediments. The effects of hydrate on the resistivity and ultrasonic velocity of hydrate bearing sand matrix have been revealed and modeled. The data can be used in well logging to determine hydrate saturation and other properties of hydrate bearing formations.