An experimental study on microscopic characteristics of gas-bearing sediments under different gas reservoir pressures

作     者：Zhenqi Guo Tao Liu Lei Guo Xiuting Su Yan Zhang Sanpeng Li Zhenqi Guo;Tao Liu;Lei Guo;Xiuting Su;Yan Zhang;Sanpeng Li

作者机构：Shandong Provincial Key Laboratory of Marine Environment and Geological EngineeringOcean University of ChinaQingdao 266100China College of Environmental Science and EngineeringOcean University of ChinaQingdao 266100China Laboratory for Marine GeologyPilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Institute of Marine Science and TechnologyShandong UniversityQingdao 266237China College of Marine GeosciencesOcean University of ChinaQingdao 266100China 

出 版 物：《Acta Oceanologica Sinica》 (海洋学报（英文版）)

年 卷 期：2021年第40卷第10期

页      面：144-151页

核心收录：

学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：The Shandong Joint Funds of National Natural Science Foundation of China under contract No.U2006213 the Fundamental Research Funds for the Central Universities under contract No.201962011 the Grant of Laboratory for Marine Geology,Pilot National Laboratory for Marine Science and Technology(Qingdao)under contract No.MGQNLM-KF201804 

主　　题：micro characteristics CT scanning gas content number and volume of bubbles gas reservoir pressure seabed sediments 

摘      要：Gas-bearing sediments are widely distributed in five continents all over the *** of the gases exist in the soil skeleton in the form of discrete large *** existence of gas-phase may increase or decrease the strength of the soil *** far,bubbles’structural morphology and evolution characteristics in soil skeleton lack research,and the influence of different gas reservoir pressures on bubbles are still *** micro characteristics of bubbles in the same sediment sample were studied using an industrial CT scanning test system to solve these *** the image processing software,the micro variation characteristics of gas-bearing sediments in gas reservoir pressure change are *** results show that the number and volume of bubbles in different equivalent radius ranges will change regularly under different gas reservoir *** the increase of gas reservoir pressure,the number and volume of tiny bubbles *** contrast,the number and volume of large bubbles increase,and the gas content in different positions increases and occupies a dominant position,driving the reduction of pore water and soil skeleton movement.