Research on measurement and analysis of shale rock physical parameters
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TE125

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    Abstract:

    Shale rock is mainly composed of carbonate rock,clay and organic matter,and its rock physical and elastic parameters are mainly controlled by the influence of the three kinds of material. There is no mature rock physics models describing the relationship between lithology and velocity because of the complexity of the rock characteristics of the shale.Basic rock physics experiment of shale is an effective method to study the relationship of the shale lithology,oiliness and velocity,and such research in Jiyang depression is still in its infancy. Shale relevant physical parameters(density,porosity,etc.),the elastic parameters(P-wave velocity and S-wave wave velocity and Poisson’s ratio,etc.),organic geochemical parameters(organic carbon content)and rock fabric parameters were obtained through the laboratory tests on shale samples from Well Luo69. It is found that the elastic parameters(P,S,C type parameters)can be used for identification of shale lithology by analysis of the intersection of these parameters while the organic carbon content and carbonate mineral content are important factors influencing shale density and its P-wave and S-wave velocities. The variations of P-wave velocity and S-wave velocity of shale samples obtained under different conditions of temperature and pressure show that P-wave velocity is more sensitive to the change of pressure,and S-wave velocity is more sensitive to the change of temperature. The research results obtained can lay a foundation for the evaluation of the shale geophysical characteristics.

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Liu Shuhui, Wang Changjiang, Luo Hongmei, Wang He. Research on measurement and analysis of shale rock physical parameters[J]. Petroleum Geology and Recovery Efficiency,2016,23(6):16~21

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  • Received:
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  • Online: October 20,2016
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