Three-dimensional seismic data analysis and interpretation for delineating geothermal reservoirs, calibrated on a part of the West Netherland Basin, Southern Holland

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中文题名用于划定地热储层的三维地震数据分析和解释,在荷兰南部西荷兰盆地的一部分进行校准
作者Aaron Enechojo Auduson
作者单位Department of Geology, Federal University Lokoja, P.M.B 1154, Lokoja, Kogi State, 260001, Nigeria
刊名Arabian Journal of Geosciences
2023
16
摘要
The aim of this study is to find and specify the location of geothermal energy sources within the West Netherland Basin Triassic layers in order to generate power in the city of Delft. The Triassic Formations are deeper compared to the Delft Sandstones Formation, which is Cretaceous in age. The main workflow adapted involves integrated seismic surveys with well data which are analyzed and interpreted to reveal the stratigraphic and structural frameworks of the formations at depths; application of convolutional neural network to enable auto-tracking, coupled with manual tracking in a blended approach; seismic data interpretation of the realized volume; and generation of geothermal potential maps. Using 2D cross-sections based on CNN-enabled and manual corrections enhanced the concise interpretation of four stratigraphic horizons specifically the Base Tertiary, Base Texel Marl, Base Posidonia Shale, and Top Triassic were interpreted based on seismic impedance and amplitude reflectivity. Additionally, a 3D grid of the region was created for the Triassic Detfurth and Volpriehausen Formations, and structural, isopach/thickness, depth, and temperature maps, as well as velocity models, were generated. From these, probable locations for geothermal exploration were identified. The subsurface maps show that the area within well Q16-02 in the center of the study area has depths greater than 3000 m, which is the required depth for a reservoir if the formation waters have temperatures over 100 °C. Temperature estimates around Q16-02 are far above 140 °C, which is well above the necessary temperature to generate power. Therefore, it is suggested that the central section of the research area be further developed for the geothermal energy project.

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