This paper discusses design and implementation of a new-generation nuclear magnetic resonance (NMR) wireline logging tool. The tool is a multifrequency, eccentered gradient-field design with multiple depths of investigation (DOI) spanning a range of several inches. The broad range of DOIs enables radial profiling of saturation distribution and formation damage. Because of the eccentered mode of operation and sensor design, the DOIs are maintained regardless of hole size and temperature. The DOIs range from 1 to 4 in. The tool features multiple sensors, including a large antenna for fluid characterization and complementary small-aperture antennae for high-resolution acquisition modes. The sensors can be operated either separately or simultaneously at logging speeds of up to 3,000 ft/hr. Comparison of the responses is used to provide high-resolution identification of long T1 fluids such as light hydrocarbons. New NMR acquisition sequences such as Diffusion Editing (DE*) are readily implemented on the new tool, which has a highly flexible pulse programmer. Combining the new acquisition methods with the multifrequency capability of the tool and Magnetic Resonance Fluid (MRF*) characterization processing provides robust fluid saturation and oil viscosity answers.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    A Next-Generation Wireline NMR Logging Tool


    Contributors:
    DePavia, L. (author) / Heaton, N. (author) / Ayers, D. (author) / Freedman, R. (author) / Harris, R. (author) / Jorion, B. (author) / Kovats, J. (author) / Luong, B. (author) / Rajan, N. (author) / Taherian, R. (author)


    Publication date :

    2003


    Size :

    7 Seiten, 13 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





    Wireline Assembly Enclosure

    SELLMAN MILTON LEE / PREJEAN ERIK J | European Patent Office | 2020

    Free access

    Wireline assembly enclosure

    SELLMAN MILTON LEE / PREJEAN ERIK J | European Patent Office | 2021

    Free access

    Wireless vs. Wireline today

    British Library Online Contents | 2006


    Comparison of Heave-Motion Compensation Systems on Scientific Ocean Drilling Ship and Their Effects on Wireline Logging Data

    Sarker, G. / Myers, G. / Williams, T. et al. | British Library Conference Proceedings | 2006