Skip to Main Content
GEOREF RECORD

Prediction and validation of gas hydrate saturation distribution in the eastern Nankai Trough, Japan; geostatistical approach integrating well-log and 3D seismic data

Machiko Tamaki, Kiyofumi Suzuki, Tetsuya Fujii and Akihiko Sato
Prediction and validation of gas hydrate saturation distribution in the eastern Nankai Trough, Japan; geostatistical approach integrating well-log and 3D seismic data
Interpretation (Tulsa) (February 2016) 4 (1): SA83-SA94

Abstract

Accurate reservoir potential evaluation requires reliable 3D reservoir models. Geostatistical simulation techniques can reproduce the heterogeneity and quantify the uncertainty in a reservoir. We have applied sequential Gaussian simulation with collocated cokriging to generate the spatial distribution of gas hydrate (GH) saturation around a gas production test site in the eastern Nankai Trough. The simulation was performed using well-log data obtained from the exploration and production tests as a primary variable and inversion-derived seismic impedance data as a secondary variable under the good correlations between two variables. The integrated model adequately described the reservoir heterogeneity and effectively interpolated the seismic trend with respect to the well data. To confirm the usability of the seismic data for the accurate representation of the GH saturation distribution, we ran two model simulations: one using well data only and the other using well and seismic data. Each model was validated using the well-log data obtained at the production test site that were not included during the simulation. The model generated using well and seismic data appropriately reproduced the trend of well-log data at the production test site, especially for the low-GH-saturation unit within the reservoir. However, the model generated using well data only was insufficient to predict the trend of the well data. The results demonstrated that the seismic data were effective for the prediction of the GH saturation distribution, and integration of the well and seismic data could improve the accuracy of the reservoir model.


ISSN: 2324-8858
EISSN: 2324-8866
Serial Title: Interpretation (Tulsa)
Serial Volume: 4
Serial Issue: 1
Title: Prediction and validation of gas hydrate saturation distribution in the eastern Nankai Trough, Japan; geostatistical approach integrating well-log and 3D seismic data
Affiliation: Japan Oil Engineering Company, Tokyo, Japan
Pages: SA83-SA94
Published: 201602
Text Language: English
Publisher: Society of Exploration Geophysicists, Tulsa, OK, United States
References: 30
Accession Number: 2017-008924
Categories: Applied geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table, geol. sketch map
N33°00'00" - N35°00'00", E136°00'00" - E139°00'00"
Secondary Affiliation: Japan Oil Gas and Metals National Corporation, JPN, Japan
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 201708
Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal