Rock Physics and Computational Geophysics
Dr. Jose Carcione
This course presents the fundamentals of the physical principles and computational techniques for wave propagation in anisotropic, anelastic and porous media, including the analogy between acoustic waves (in the general sense) and electromagnetic (EM) waves. The emphasis is on geophysical applications for hydrocarbon exploration, but researchers in the fields of earthquake seismology, rock physics, and material science, -- including many branches of acoustics of fluids and solids (acoustics of materials, non-destructive testing, etc.) -- may also find the material useful. The course illustrates the use of seismic and EM modeling, with an account of the numerical algorithms for computing synthetic seismograms, diffusion fields and radargrams, with applications in the field of geophysical prospecting, seismology and rock physics, such as evaluation of methane hydrate content, upscaling techniques, detection of overpressure, Antarctic and permafrost exploration, exploration of the Earth's deep crust, time-lapse for monitoring of CO2 injection, seismic modeling in geothermal fields, seismic inversion, etc.
On completion of the course, participants will be able to:
Solve complex problems using numerical methods, as finite-differences, Fourier techniques, and machine learning methods;
Apply these concepts to seismic and EM applications, such as hydrocarbon prospection, earthquakes, surface radar applications, EM low-frequency methods for environmental problems, rock physics, etc.
Top Seals and Fault Seals in Clastic and Carbonate Reservoirs: A Practical Approach
Dr. Dirk Nieuwland
The core of this course is a new powerful method of fault seal prediction and is intended for geologists, geophysicists and reservoir engineers in exploration. The course is based on geomechanics as a sound foundation for structural geological concepts and the behaviour of rocks in the brittle regime. Mechanical rock properties and ways and means to determine these properties form an important element of this course. Following an introduction to geomechanics, the theory of fracturing of brittle, ductile and viscous rocks is treated, illustrated with field examples and case histories.
Different deformation mechanisms, based on mechanical rock properties, are treated in relation to realistic geological environments. Cataclasis is introduced as a major sealing mechanism, including a detailed account of the cataclasis process. Paleo-stress analysis is introduced, together with a new tool, the reactivation circle. The course is very practical and focused on application. An exercise based on real data forms an important element of the course. Cases requiring the use of numerical models are discussed but numerical modeling is not part of the course.
Upon completion of the course, participants will be able to:
Recognize the most appropriate fault seal mechanism for an area of choice and perform a quantitative fault seal analysis. If necessary, perform a paleo-stress analysis as a basis for fault seal prediction;
Assess top and fault seal integrity for subsurface processes including exploration, field development and subsurface storage of natural gas or CO2.