1887
Volume 68, Issue 5
  • E-ISSN: 1365-2478

Abstract

ABSTRACT

Although horizon interpretation is a routine task for building reservoir models and accurately estimating hydrocarbon production volumes, it is a labour‐intensive and protracted process. Hence, many scientists have worked to improve the horizon interpretation efficiency via auto‐picking algorithms. Nevertheless, the implementation of a classic auto‐tracking method becomes challenging when addressing reflections with weak and discontinuous signals, which are associated with complicated structures. As an alternative, we propose a workflow consisting of two steps: (1) the computation of strata histograms using transdimensional Markov‐chain Monte Carlo and (2) horizon auto‐tracking using waveform‐based auto‐tracking guided by those strata histograms. These strata histograms generate signals that are vertically sharper and more laterally continuous than original seismic signals; therefore, the proposed workflow supports the propagation of waveform‐based auto‐picking without terminating against complicated geological structures. We demonstrate the performance of the novel horizon auto‐tracking workflow through seismic data acquired from the Gulf of Mexico, and the Markov‐chain Monte Carlo inversion results are validated using log data. The auto‐tracked results show that the proposed method can successfully expand horizon seed points even though the seismic signal continuity is relatively low around salt diapirs and large‐scale faults.

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/content/journals/10.1111/1365-2478.12933
2020-03-30
2024-04-19
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  • Article Type: Research Article
Keyword(s): Automatic picking; Bayesian inversion; Seismic interpretation

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