Active Geophysical Monitoring

Section 1: General concept of active geophysical monitoring

1.1 - Elements of active geophysical monitoring theory

1.2 - Large-scale geophysical surveys of the Earth’s crust using high-power electromagnetic pulses

1.3 - Active vibromonitoring: experimental systems and fieldwork results

1.4 – Development of Marine Seismic Vibrator and Experimental Results

1.5 – Seismic active monitoring system concept

Section 2: Active monitoring targetsChapter

2.1 - Active geophysical monitoring of hydrocarbon reservoirs using electromagnetic methods

2.2 - Joint iterative migration of surface and borehole gravity gradiometry data

2.3 - Feasibility study of gravity gradiometry monitoring of CO2 sequestration in deep reservoirs using surface and borehole data

2.4 - Feasibility study of reservoir monitoring using the induced polarization effect associated with nanoparticles

2.5 - Application of machine learning algorithms for formation evaluation based on borehole resistivity and induced polarization logging

Section 3: Technology of active monitoring

3.1 - Electromagnetic—accurately controlled routinely operated signal system and corresponding tensor transfer functions in diffusion field region

3.2 - Development of large load capacity externally pressurized gas journal bearings for rotary-type vibration exciters with large static imbalance

3.3 - Active monitoring technology in studying the interaction of geophysical fields

3.4 - The nonlinear processes in active monitoringC

3.5 - DAS-VSP at Onuma geothermal field

3.6 – Das-VSP at Sumikawa geothermal field

Section 4: Theory of data analysis and interpretation

4.1 - Maxwell’s equations and numerical electromagnetic modeling in the context of the theory of differential forms

4.2 - Three-dimensional electromagnetic holographic imaging in active monitoring of sea-bottom geoelectrical structures

4.3 - Foundations of the method of electromagnetic field separation in upgoing and downgoing parts and its application to marine controlled source electromagnetic data

4.4 - Geothermal resource study using 3D joint Gramian inversion of airborne gravity gradiometry and magnetotelluric data

Section 5: Signal processing in active monitoring and case histories

5.1 - Effect of spatial sampling on time-lapse seismic monitoring in random heterogeneous media

5.2 - Characteristics of ACROSS signals from transmitting stations in the Tokai area and observed by Hi-net

5.3 - Stacking strategy for acquisition of an Accurately Controlled Routinely Operated Signal System transfer function

5.4 - Wave fields from powerful vibrators in active seismology and depth seismic researches

5.5 - Features of radiation of powerful vibrators on inhomogeneous soils

5.6 - Time-lapse approach to detect possible preslip associated with the Nankai Trough mega-earthquake by monitoring the temporal change of the strong seismic reflector at the subducting Philippine Sea Plate

5.7 - Active and passive monitoring toward geophysical understanding of offshore interplate seismogenesis

5.8 - Accurately controlled and routinely operated signal system time lapse for a field study in a desert area of Saudi Arabia

5.9 - Time-lapse imaging of air injection using the ultrastable ACROSS seismic source and reverse-time imaging method

5.10 – Minimization of environmental impact associated with the use of artificial marine seismic sources

Section 6: Case histories of the active monitoring in carbon capture and storage (CCS)

6.1 - Active surface and borehole seismic monitoring of a small supercritical CO2 injection into the subsurface: experience from the CO2CRC Otway Project

6.2 - Geophysical monitoring of the injection and postclosure phases at the Ketzin pilot site

6.3 - Geophysical monitoring at the Nagaoka pilot-scale CO2 injection site in Japan

6.4 - Comprehensive seismic monitoring of an onshore carbonate reservoir: a case study from a desert environment

6.5 – Acquistore to Weyburn Project summary