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In pursuit of increased resolution while preserving amplitude fidelityNormal access

Authors: J.M. Reilly, M. Matheney, P. Monigle, K. He, M. Aharchaou, J. Zhang, S. Lazarotos, Z. Lawrence, J. Jackson, K. Nolan and M. Parry
Journal name: First Break
Issue: Vol 37, No 7, July 2019 pp. 39 - 44
DOI: 10.3997/1365-2397.2019021
Language: English
Info: Article, PDF ( 884.49Kb )
Price: € 30

Summary:
Recent advances in acquisition and processing technology are an enabler for improving the resolution of our seismic images. However, care must be taken to ensure that these imaging enhancements retain the amplitude fidelity necessary to allow for detailed Amplitude Variation with Offset/Direct Hydrocarbon Indicator (AVO/DHI) analysis, particularly in the marine deepwater setting. Acquisition, processing and interpretation all play important and interrelated roles in obtaining the maximum utility from the seismic data. In this paper we will discuss where resolution and data fidelity can be gained or lost, what factors primarily determine bandwidth recovery, and what decisions still need to be made in a somewhat subjective, target-oriented manner. Data from deepwater Guyana is used to demonstrate fundamental principles and the evolution of acquisition and processing workflows over the history of this project. Finally, we will suggest areas where additional improvements can be achieved in seismic field technologies, processing and interpretations workflows.


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