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- W4285138520 abstract "Summary With the development of high-angle/horizontal well technology, unconventional tight reservoirs with moderate/high resistivity have gradually become the focus of exploration and development. However, in moderate-high-resistance reservoir environment, low-resistance anomaly can be observed regularly in the array laterolog curves, which will lead to the misjudgment for the oil-gas reservoirs. Therefore, the detection performance of the array lateral instrument powered by low-frequency alternating current (LFAC) urgently needs to be clarified and the low-resistance anomaly are necessary to be analyzed. In this paper, the causes of low-resistance anomaly are determined and the qualitative and quantitative evaluations for the detection performance of LFAC lateral instrument in moderate-high resistance formations are performed. Moreover, the effects of borehole and formation resistivity are studied from the perspective of potential distribution. Numerical simulation results show that the current flow characteristics vary considerably in different stratigraphic models and the low-resistance anomaly is mainly caused by the high resistance characteristics and borehole enlargement." @default.
- W4285138520 created "2022-07-14" @default.
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- W4285138520 date "2022-01-01" @default.
- W4285138520 modified "2023-10-18" @default.
- W4285138520 title "Detection Performance and Anomaly Analysis for Lfac Resistivity Measurements in Moderate-High Resistance Formations" @default.
- W4285138520 doi "https://doi.org/10.3997/2214-4609.202210710" @default.
- W4285138520 hasPublicationYear "2022" @default.
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