A Tiny-Fault Detection Strategy Based on Phase Congruency—An Example of Carbonate Reservoir in Ordos Basin, China

Wang, Enli; Li, Hailiang; He, Run; Zhao, Wanjin; Li, Lin; Xie, Chunhui; Yan, Guoliang; Chen, Qiyan; Yang, Qing

doi:10.3390/min13030306

Open AccessArticle

A Tiny-Fault Detection Strategy Based on Phase Congruency—An Example of Carbonate Reservoir in Ordos Basin, China

by

Enli Wang

^*,

Hailiang Li

,

Run He

^*,

Wanjin Zhao

,

Lin Li

,

Chunhui Xie

,

Guoliang Yan

,

Qiyan Chen

and

Qing Yang

Research Institute of Petroleum Exploration & Development-Northwest (NWGI), PetroChina, Lanzhou 730000, China

^*

Authors to whom correspondence should be addressed.

Minerals 2023, 13(3), 306; https://doi.org/10.3390/min13030306

Submission received: 20 November 2022 / Revised: 15 February 2023 / Accepted: 18 February 2023 / Published: 22 February 2023

(This article belongs to the Special Issue New Methods and Technologies for Mineral Geological and Geophysical Exploration in China)

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Abstract

Tiny-fault detection plays a very important role in the research on the tight oil and gas reservoir in well area X in Ordos Basin, China. In this study, the target formation is the Majiagou dolomite reservoir section under the Ordovician salt with low-amplitude structures generally developed. The conventional attributes extracted from migrated seismic data could not achieve ideal results in detecting hidden faults with small displacement due to slight travel time differences and weak amplitude disturbances. To address this challenge, a segment and fusion strategy was adopted to highlight tiny faults in this region. First, the phase congruency analysis method was used to extract the local edges of coherence to locate the faults. Second, in the extraction process, the coherence was divided into segments according to the fault scales, and then enhanced segment by segment and fused. Third, the empirical formula of the new fault indicator was constructed by the phase congruency features, which can be used to accurately characterize tiny faults. This strategy performs well in both model tests and the migrated seismic data.

Keywords: tiny faults; amplitude; phase; phase congruency; segment; fusion; strategy

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MDPI and ACS Style

Wang, E.; Li, H.; He, R.; Zhao, W.; Li, L.; Xie, C.; Yan, G.; Chen, Q.; Yang, Q. A Tiny-Fault Detection Strategy Based on Phase Congruency—An Example of Carbonate Reservoir in Ordos Basin, China. Minerals 2023, 13, 306. https://doi.org/10.3390/min13030306

AMA Style

Wang E, Li H, He R, Zhao W, Li L, Xie C, Yan G, Chen Q, Yang Q. A Tiny-Fault Detection Strategy Based on Phase Congruency—An Example of Carbonate Reservoir in Ordos Basin, China. Minerals. 2023; 13(3):306. https://doi.org/10.3390/min13030306

Chicago/Turabian Style

Wang, Enli, Hailiang Li, Run He, Wanjin Zhao, Lin Li, Chunhui Xie, Guoliang Yan, Qiyan Chen, and Qing Yang. 2023. "A Tiny-Fault Detection Strategy Based on Phase Congruency—An Example of Carbonate Reservoir in Ordos Basin, China" Minerals 13, no. 3: 306. https://doi.org/10.3390/min13030306

APA Style

Wang, E., Li, H., He, R., Zhao, W., Li, L., Xie, C., Yan, G., Chen, Q., & Yang, Q. (2023). A Tiny-Fault Detection Strategy Based on Phase Congruency—An Example of Carbonate Reservoir in Ordos Basin, China. Minerals, 13(3), 306. https://doi.org/10.3390/min13030306

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A Tiny-Fault Detection Strategy Based on Phase Congruency—An Example of Carbonate Reservoir in Ordos Basin, China

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