Three-Dimensional Modeling of TDEM Study for Carbon Capture Storage

Southeast Asian Conference on Geophysics

Nurazna Pramukusuma, Dias^1 ; Manoti, Diniasa^1 ; Warsa^2

Undergraduate Program of Geophysical Engineering, Institut Teknologi Bandung, Indonesia^1

Applied and Exploration Geophysics Research Group, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Indonesia^2

关键词: Carbon capture storage;    Conductivity changes;    electromagnetic;    galvanic;    Reservoir monitoring;    Three-dimensional model;    Time domain electromagnetics;    Transmitter and receiver;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/62/1/012043/pdf
DOI  :  10.1088/1755-1315/62/1/012043

来源: IOP

【 摘 要 】

TDEM (Time Domain Electromagnetic) method is a sounding geophysical method using electromagnetic wave generated by the electrical current source to image cross section of earth's subsurface. TDEM using galvanic source (grounded wire) is one of TDEM acquisition technique which has flexible properties for the complex topography of measurement area. Three-dimensional forward and inversion modeling technique of TDEM with galvanic source still develops until now. Three-dimensional modeling is required because three-dimentional structure can influence TDEM signal which has a dimension of z-axis direction only. In this paper, We have been developing a 3D forward modeling program applying finite difference time domain method for 3D subsurface models. We can assess a distribution of TDEM synthetic data affected by 3D model. Using this 3D TDEM modeling program synthetic data has been generated as the function of transmitter and receiver position in 3D model space. Furthermore, this program can be used to simulate a conductivity change of reservoir model as consideration of reservoir monitoring implementation.