Quantitative seismic facies analysis by the cross-correlation coding and matching with depositional facies, (A case study of the Poseidon region of Australia)

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Rasol Zadeh Hossein; HASHEMI HOSEIN; Hadiloo Saeed

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Journal Paper

Paper Information

Journal: JOURNAL OF PETROLEUM GEOMECHANICS Year:2022 | Volume:5 | Issue:4 Page(s): 54-67

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Information Journal Paper

Title

Quantitative seismic facies analysis by the cross-correlation coding and matching with depositional facies, (A case study of the Poseidon region of Australia)

Author(s)

Rasol Zadeh Hossein | HASHEMI HOSEIN | Hadiloo Saeed | Issue Writer Certificate

Keywords

Seismic Facies

Sedimentary facies

Quantitative Analysis

Waveshape attribute

Johnson formation

Abstract

After picking the Johnson horizon, we continue the processes related to making the window connected to the horizon. The output contains SEGY data, which has the information on the amplitude and frequency of traces in the Johnson horizon window. Figures 4 and 5 are the results of quantitative analysis of seismic facies that show the correlation coefficient (R) in terms of inline and crossline. In each of the shapes, one of the wells is considered as the base and the subsequent trace at the location of that well will be the main trace. Facial (seismic) changes in all shapes show a similar general trend. The number of traces extracted from the Johnson window is 84, 2001. Twenty samples are provided for each trace to determine the shape of each trace in the depth of the window. As a result, using amplitude values to increase time, it determines the waveform of each trace for us. Thus it is clear that the waveform attribute, which is a dual attribute of the amplitude and frequency composition, has been extracted for the whole set of tremors. Using the correlation coefficient relationship, the similarity of each of these traces is compared with a baseline trace. The connection between seismic facies around the well and the existing depositional facies is made with more certainty. But it is possible to study the gradual change of sedimentary deposits and facies and compare them with seismic facies changes. By studying the results of wells in the area and geological information, it is possible to show some sedimentary changes along with seismic changes in the Johnson horizon window. The predominant lithology of the northwestern part is limestone or limestone with clay deposits. This is the northwestern part where the Poseidon 2 and Boreas wells are located.

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