In exploration for natural gas hydrates, drilling, coring and well logging are the most important access to make deep understanding of the nature of hydrate reservoirs, besides the seismic prospecting methods. Because of the harsh conditions for hydrate stability and the complex of occurrence formations, the drilling and coring generally have a great difficulty and high cost. Therefore, the well logging becomes the priority method. The resistivity and sonic logging method, which were applied as the earliest logging method in the evaluation of hydrate reserviors, have been continuously applied ever since and the evaluation results derived from them have a relative accuracy and reliability. Other logging tools, such as borehole imaging, density, electromagnetic, nuclear magnetic resonance, etc. are also used to make integrated interpretation and evaluation for the hydrate reservoirs. Until now the applied porosity and hydrate saturation evaluation models are better suitable to the homogeneous reservoirs. However, they still need to be amended or improved for the anisotropism (e. g., fracture sediment) and shale-rich reservoirs. In addition, the external factors such as drilling fluid washout and invasion will also affect the well logging results. The combination of various well logging methods is an effective way to improve the accuracy of identification and quantification of hydrate reservoirs.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Well Logging in Gas Hydrate-Bearing Sediment: A Review


    Contributors:
    Liu, Li (author) / Jiang, Guo-Sheng (author) / Ning, Fu-Long (author) / Yu, Yi-Bing (author) / Zhang, Ling (author) / Tu, Yun-Zhong (author)


    Publication date :

    2012


    Size :

    11 Seiten




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Nuclear Magnetic Resonance Logging Evaluation of Natural Gas Hydrate Reservoir

    Li, Xin / Xiao, Li-Zhi / An, Tian-Lin | Tema Archive | 2012


    Multifunctional well logging pulley with tension measurement function and automatic well logging device

    WANG JIAYUE / CHE HAIQING / LANG BAIQIU et al. | European Patent Office | 2023

    Free access


    Well logging device of offshore drilling platform

    ZHANG XIAOWEI / RAO PAN / TAN CHUNLONG et al. | European Patent Office | 2023

    Free access

    APPARATUS FOR INSTALLING PORTABLE GEOPHYSICAL WELL LOGGING SONDE

    HWANG SEHO / SHIN JEHYUN | European Patent Office | 2024

    Free access