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首页> 外文期刊>Brazilian Journal of Geology >Shale gas plays, Neuqu??n Basin, Argentina: chemostratigraphy and mud gas carbon isotopes insights
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Shale gas plays, Neuqu??n Basin, Argentina: chemostratigraphy and mud gas carbon isotopes insights

机译：阿根廷Neuqu ?? n盆地页岩气矿藏：化学地层学和泥浆气碳同位素研究

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In order to enhance the knowledge of shale objectives from Vaca Muerta and Los Molles Formations in the Neuqu??n Basin, Argentina, chemostratigraphic and mud gas carbon isotope analyses were performed in two wells from Agua del Caj?3n and Salitral oilfields (ADC-1016 and NqSa-1148). Geochemical data show restricted levels in both cases to perforate and produce. In ADC-1016 well, Lower Los Molles Formation looks like the most suitable play to be produced. At El Salitral oilfield (NqSa-1148), the best remarkable Vaca Muerta-Quintuco objectives are associated with authigenic elements, in limited horizons. Enhancement of the Quintuco reservoir by deep circulating fluids (thermobaric reservoir) is suggested. Carbon isotope analysis reveals complex processes that affected the gas composition. Addition of microbial methane, biodegradation of ethane-propane and mixing of gases has been recognized. Isotope reversals and presumed water reforming of hydrocarbons have been registered associated with overpressure for Lower Los Molles Formation in the ADC-1016 well, which is pointed out as the most promising shale play in the area. Vaca Muerta gases at Agua del ?-Cajon ADC- 1016 well are associated with the homonymous source. El ?-Salitral 1148 well shows that primary isotope composition in gases from Vaca Muerta shale play and Quintuco reservoir could be associated with a Lower Los Molles source, an aloctonous charge related with the main structures of the area.
机译：为了增强对阿根廷内乌肯盆地中Vaca Muerta和Los Molles地层页岩目标的了解，在来自Agua del Caj？3n和Salitral油田的两口井（ADC- 1016和NqSa-1148）。地球化学数据显示，在两种情况下，穿孔和生产的水平都受到限制。在ADC-1016井中，Lower Los Molles地层看起来像是最适合生产的地层。在El Salitral油田（NqSa-1148），最出色的Vaca Muerta-Quintuco物镜在有限的视野内与自生元素相关联。建议通过深层循环流体（高温储层）增强Quintuco储层。碳同位素分析揭示了影响气体成分的复杂过程。已经认识到添加微生物甲烷，乙烷-丙烷的生物降解和气体混合。已记录到ADC-1016井下洛斯莫尔斯地层的同位素逆转和碳氢化合物的水重整与超压相关，这被认为是该地区最有前途的页岩层。 Agua del？-Cajon ADC-1016井的Vaca Muerta气体与同音源有关。 Elα-Salitral1148井表明，来自Vaca Muerta页岩层和Quintuco储层的气体中的主要同位素组成可能与Lower Los Molles震源有关，该震源与该地区的主要结构有关。

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