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- W3124511514 abstract "Summary In this paper, four kinds of azimuthal electromagnetic (EM) resistivity logging while drilling (LWD) signals are explored in different anisotropic reservoirs in order to improve hydrocarbon exploration and development. A forward numerical simulation of azimuthal EM resistivity LWD is designed, based on the fast Hankel transform method. Four kinds of azimuthal EM resistivity LWD tools are then introduced. The effect law of anisotropy on logging response is simulated in simple three-layer models under a high angle well condition. Then, the influence of anisotropy, thin target layer, and surrounding rock on azimuthal signals and apparent resistivity is analyzed in complex seven-layer models under different inclination angles. The responses of all symmetrical double-transmitter-receiver tools are found to identify the thin layer boundary and anisotropic information more effectively than a single transmitter-receiver tool. Therefore, symmetrical transmitter-receiver structure should be applied in the tool design of azimuthal EM LWD. Symmetrized azimuthal signals are recommended for boundary identification. Additionally, anti-symmetrized azimuthal signals as well as measured resistivity should be used for formation evaluation. This tools comparison offers substantial technical support for tool design and real-time formation evaluation, especially for future geosteering applications." @default.
- W3124511514 created "2021-02-01" @default.
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- W3124511514 date "2020-01-01" @default.
- W3124511514 modified "2023-10-18" @default.
- W3124511514 title "Anaylsis of Different Azimuthal Electromagnetic LWD Signals in Anisotropic Reservoirs" @default.
- W3124511514 doi "https://doi.org/10.3997/2214-4609.202011187" @default.
- W3124511514 hasPublicationYear "2020" @default.
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