Journal of Petroleum Exploration and Production Technology
Oil recovery from a reservoir involves quite a lot of challenges related to well placement before... more Oil recovery from a reservoir involves quite a lot of challenges related to well placement before any action can be taken. An important step is proposing a reservoir target area that provides an indication of high potential for oil recovery. In other words, a position presenting high productivity potential according to some criteria. A simple proposal is the potential productivity proxy function (PP) based on the oil-bearing and mobility capacities of oil suggested as $$\phi k{S_{\rm o}}^n$$ ϕ k S o n , where n is a correlation parameter, $$\phi$$ ϕ is porosity, k is absolute permeability and $$S_{\rm o}$$ S o is oil saturation at grid block. In this paper, we consider this proxy function as a well placement strategy based on the column-wise ($${\text {PP}}_{\rm C}$$ PP C ) and layer-wise ($${\text {PP}}_{\rm L}$$ PP L ) values. To test this model, the UNISIM-I-D and PUNQ-S3 synthetic reservoirs are considered. Several production simulations are realized assuming a set of vertical w...
Este artigo apresenta uma aplicação da centralidade de intermediação da teoria dos grafos como pa... more Este artigo apresenta uma aplicação da centralidade de intermediação da teoria dos grafos como parâmetro para o posicionamento de poços multilaterais em reservatórios de petróleo.
The paper presents the application of model- based systems technology within a decision sup- port... more The paper presents the application of model- based systems technology within a decision sup- port system for drinking water treatment plants. This system aims at detecting deviations from normal plant operation, identifying their possible causes, and proposing adequate remedial inter- ventions. Its basis is a library of model frag- ments that represent intended processes, distur- bances, and possible interventions. Based
Wildland fires in relatively homogeneous terrains and vegetation motivates this work which consid... more Wildland fires in relatively homogeneous terrains and vegetation motivates this work which considers the formation of green islands, regions of vegetation that become enclosed and eventually engulfed by the fire. A Voronoi growth model adequately represents the spreading of a fire from isolated point-like sources. Using this model, it is possible to predict the green island formations. First, we introduce
International Conference in Central Europe on Computer Graphics and Visualization, 2003
In this paper we present the geometrical construction of an approximate generalized Voronoi diagr... more In this paper we present the geometrical construction of an approximate generalized Voronoi diagram for generalized polygons and circular objects based on their minimum geometrical structure that are extracted from the object's digital image. The construction is done in ) (n O time complexity, where n is the number of single points defining the set of objects. An application of
Journal of Petroleum Exploration and Production Technology
Oil recovery from a reservoir involves quite a lot of challenges related to well placement before... more Oil recovery from a reservoir involves quite a lot of challenges related to well placement before any action can be taken. An important step is proposing a reservoir target area that provides an indication of high potential for oil recovery. In other words, a position presenting high productivity potential according to some criteria. A simple proposal is the potential productivity proxy function (PP) based on the oil-bearing and mobility capacities of oil suggested as $$\phi k{S_{\rm o}}^n$$ ϕ k S o n , where n is a correlation parameter, $$\phi$$ ϕ is porosity, k is absolute permeability and $$S_{\rm o}$$ S o is oil saturation at grid block. In this paper, we consider this proxy function as a well placement strategy based on the column-wise ($${\text {PP}}_{\rm C}$$ PP C ) and layer-wise ($${\text {PP}}_{\rm L}$$ PP L ) values. To test this model, the UNISIM-I-D and PUNQ-S3 synthetic reservoirs are considered. Several production simulations are realized assuming a set of vertical w...
Este artigo apresenta uma aplicação da centralidade de intermediação da teoria dos grafos como pa... more Este artigo apresenta uma aplicação da centralidade de intermediação da teoria dos grafos como parâmetro para o posicionamento de poços multilaterais em reservatórios de petróleo.
The paper presents the application of model- based systems technology within a decision sup- port... more The paper presents the application of model- based systems technology within a decision sup- port system for drinking water treatment plants. This system aims at detecting deviations from normal plant operation, identifying their possible causes, and proposing adequate remedial inter- ventions. Its basis is a library of model frag- ments that represent intended processes, distur- bances, and possible interventions. Based
Wildland fires in relatively homogeneous terrains and vegetation motivates this work which consid... more Wildland fires in relatively homogeneous terrains and vegetation motivates this work which considers the formation of green islands, regions of vegetation that become enclosed and eventually engulfed by the fire. A Voronoi growth model adequately represents the spreading of a fire from isolated point-like sources. Using this model, it is possible to predict the green island formations. First, we introduce
International Conference in Central Europe on Computer Graphics and Visualization, 2003
In this paper we present the geometrical construction of an approximate generalized Voronoi diagr... more In this paper we present the geometrical construction of an approximate generalized Voronoi diagram for generalized polygons and circular objects based on their minimum geometrical structure that are extracted from the object's digital image. The construction is done in ) (n O time complexity, where n is the number of single points defining the set of objects. An application of
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Papers by Waldir Roque