La próxima semana estaremos presentando este trabajo en la 1a Convención de Exploración Energética de la ACGGP. Los esperamos para conversar de este tema. NATURAL HYDROGEN FROM ORGANIC MATTER: NEW INSIGHTS FROM HYDROGEN SYSTEM AND ITS POTENTIAL IN EASTERN CORDILLERA BASIN, COLOMBIA. Mora Cesar, Posada Claudia, Silveira Belén, Peñafort Cristian Although natural hydrogen prospectivity studies have concentrated on volcanic and ultramafic geologic environments, recent studies have demonstrated the generation of hydrogen from organic matter present in stratigraphic intervals (coals and shales) at high levels of thermal maturity (vitrinite reflectance 3-5%). Eventually this process could explain the presence of hydrogen identified in oil fields in several basins dispersed across all continents. Mass spectrometric analysis and open system pyrolysis indicate that significant growth of aromatic ring systems constitute the route for the formation of thermogenic hydrogen molecules from organic matter. Preliminary kinetic models, which represent hydrogen generation as a function of burial, temperature and thermal maturity rise in hydrocarbon source rocks, have been estimated by some researchers and can be used to evaluate the hydrogen-generating potential in different types of sedimentary basins. From the exploratory point of view, the generation of hydrogen from the thermal decomposition of organic matter offers the possibility to study the hydrogen system based on the elements and processes proposed in the methodology of petroleum systems (source rock, reservoir, seal, migration, accumulation. and preservation). Geological and petroleum systems studies carried out in the Eastern Cordillera basin indicate that from a conceptual point of view, this geological province presents good conditions for natural hydrogen generation at high thermal maturity levels, when the oil and gas generation phase has been significantly exhausted in the main source rocks intervals. These conditions are especially favorable in the Lower Cretaceous sequence that is involved in the Tablazo and Cocuy-Medina sub-basins (Paja and Fomeque Formations). In these provinces, shales and limestones with high hydrocarbon potential and high levels of thermal maturity have been identified compatible with those proposed for this H2 system. This article presents a summary of the results obtained in basins in Australia and China where H2 system have been studied. Additionally, an analysis of the geological conditions and thermal maturity in different geological provinces of the Eastern Cordillera Basin is presented. This analysis allows us to propose some areas where there are possibilities of developing detailed studies to evaluate the potential of natural hydrogen associated with source rocks at high degree of thermal evolution.
It is an important news for the country to know the possibility of having free hydrogen from organic matter present in the stratigraphic intervals of the Paja Formation unit (3-5% Ro). This stratigraphic unit is present extensively in the entire Eastern Cordillera where important industrial centers are present. The mentioned hydrogen must be quantified and its commercial use must be evaluated in the upcoming future
Ana Berrio
5mo
Como siempre Cesar Mora muy oportuno el tema!👏🏻
Rodolfo Ardila
5mo
Thanks for sharing
Muy Interesante Cesar Mora
Hydrocarbon and Energy consultant. Offshore Exploration Expertise.
5moThanks for this contribution Cesar, that is a very interesting approach, beyond the usual "serpetinite source for hydrogen". By the end of 2023, I took part in a project of ANH, for gas potential in Cordillera and Llanos Basins. The project included gas sampling in several fields. The analytical results showed high concentrations (15-95%) of hydrogen in four producing fields in Llanos. Besides the measurement of hydrocarbon gases, the samples were also tested for non hydrocarbons, such as He, Ar, O2, N2, CO2 and isotopic fingerprinting. The full report should be available very soon upon request to ANH, and represents a very interesting data set to understand hydroben occurrence in Llanos basin.