Geological information can be used to solve many practical and theoretical problems, both within and outside of the discipline of geology. These include analysis of ground stability, predicting subsurface water or hydrocarbon reserves, assessment of risk due to natural hazards, and many others. In many cases, geological information is provided as an a priori component of the solution (i.e. info...

History matching is used to constrain flow simulations and reduce uncertainty in forecasts. In this work, we revisited some fundamental engineering tools for predicting waterflooding behavior to better understand the flaws in our simulation and thus find some models which are more accurate with better matching. The Craig-Geffen-Morse (CGM) analytical method was used to predict recovery performa...

An efficient domain decomposition method is developed for discretized Helmholtz equations resulting from acoustical geological survey problems. A Schwarz-type multiplicative preconditioner is constructed using a fast direct method in subdomains by embedding them to rectangular domains. The GMRES iterations are reduced to a subspace corresponding to interfaces. Numerical experiments with several...

Teach the Earth: The Science Education Resource Center (SERC) Portal for Geoscience Faculty (Carleton College). This portal is the gateway to thousands of pages of activities, workshops, course descriptions and more http://serc.carleton.edu/teachearth/index.html [1] See the SERC site Bringing Research on Learning to the Geosciences for a searchable database of articles on effective learning and...

With the advances in smart well technology, substantially higher oil recovery can be achieved by intelligently managing the operations in a closed-loop optimization framework. The closed-loop optimization consists of two parts: geological model updating and production optimization. Both of these parts require gradient information to minimize or maximize an objective function: squared data misma...

Teach the Earth: The Science Education Resource Center (SERC) Portal for Geoscience Faculty (Carleton College). This portal is the gateway to thousands of pages of activities, workshops, course descriptions and more http://serc.carleton.edu/teachearth/index.html [1] See the SERC site Bringing Research on Learning to the Geosciences for a searchable database of articles on effective learning and...

The complexity of stratigraphic architecture makes the geological modeling over-reliance on labor, this means more timeconsuming and inefficiency. It is a difficult problem in using only borehole data in engineering survey for computerized automatic modeling to quickly establish the stratigraphic model. We joined connectivity criteria, as well as virtual drilling method, using an improved “laye...

Seismic reflection tomography is a method for determining a subsurface velocity model from the traveltimes of seismic waves reflecting on geological interfaces. From an optimization viewpoint, the problem consists in minimizing a nonlinear least-squares function measuring the mismatch between observed traveltimes and those calculated by ray tracing in this model. The introduction of a priori in...

Geological maps are increasingly published and shared online, whereas tools and services supporting information retrieval and knowledge discovery are underdeveloped. In this study, we developed an ontology of geological time scale by using a RDF (Resource Description Framework) model to represent the ordinal hierarchical structure of the geological time scale and to encode collected annotations...