Abstract
In this paper evaluates the effects in the gasoline prices after the Brazilian downstream oil chain liberation, in late 1990s. That stage meant that the Brazilian govern, that no longer setting the maximum and minimum values of all fuels. For this purpose, the gasoline type C prices were collected from fifteen relevant cities in five economic regions of Brazil, between the years 2005 and 2014. The sequences of computational techniques were applied on these datasets. The stationary and linearity for variation prices time series were analyzed in all cities and, also, the correlations among all cities in order to recognize the times series patterns. Furthermore, the Cumulative Sum control (CUMSUM) chart was used to detect smaller parameter shifts on the distribution time series. Our results reveled distinct patterns for middle of 2005 and the middle of 2006, and also for the first months of 2011 and the middle of 2012. Reinforcing the idea of the Brazilian retail and distribution are governed strongly by exogenous factors. This makes a conventional analysis difficult to be used. Once, the Brazilian downstream fuel chain suggests to be a complexity system.
Highlights
After the oil control changing a new status quo was established in Brazil
The main aims were to improve the infrastructure industries, protect the competition and efficiency of market. It was created the Brazilian law 8884/94, called Petroleum law, which begun a new phase in Brazilian downstream oil chains
There, with a low volume of petroleum imports, around 5% according to Petrobras (2005) and ANP (2016), the prices of their derivatives are not detached from the variations of the international oil market
Summary
After the oil control changing a new status quo was established in Brazil. The main aims were to improve the infrastructure industries, protect the competition and efficiency of market. For these purpose, it was created the Brazilian law 8884/94, called Petroleum law, which begun a new phase in Brazilian downstream oil chains. Uchoa (2006) points out about the behavior of oil prices in international trade generate impacts on their derivatives from a global market. There, with a low volume of petroleum imports, around 5% according to Petrobras (2005) and ANP (2016), the prices of their derivatives are not detached from the variations of the international oil market. The gasoline has a straight impact on family budget
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