This book presents the ability to bring together a single work of scientific articles from the best minds of the Institute of Environment and Energy of the University of São Paulo to analyze the legal, regulatory, and technical architecture of the natural gas exploration chain in Brazil. The theme is current and relevant, considering that global conflicts are relevant to the energy issue and access to means of energy generation.Also, with the change of the Brazilian regulatory framework for the gas market, to promote its deconcentration and facilitate the entry of new entrants, knowledge of the current rules is of paramount importance for scholars on the subject. The deconcentration of the market will result in increased competitiveness and investment by the private sector in the gas sector, resulting in a reduction in fuel prices. Hope the readers enjoy it!