广西桂中1井井下油气地球化学特征及其指示意义

长期以来，桂中坳陷以其良好的地质条件为中外地质学家所瞩目，通过对桂中1井纵向上不同层段岩屑样品的油气地球化学特征研究，以典型油气层、生油层、储油层以及盖层化探异常组合、异常形态及其特征为依据，并用烃类比值、甲烷碳同位素、三维荧光等方法进行属性判断，针对桂中1井不同异常区段（不同地层）从化探角度进行评价。并且对桂中凹陷勘探潜力的判断提供地球化学依据。

Underground oil-gas geochemical characteristics and indicative significance of GZ-1 well in Guangxi

For many years, the GZ depression is focused the attention of Chinese and foreign geologists for its good geological condition. By researching the oil-gas geochemical characteristics of debris samples in different stratum in the Longitudinal direction, this paper makes evaluation to different formation of GZ-1 well from geochemical exploration perspective, makes the analysis and judgement using the hydrocarbon ratio, carbon isotope, three-dimensional fluorescence based on typical oil and gas reservoirs, source bed, oil- bearing reservoir and cap rock, geochemical exploration assemblage anomaly, anomaly shape as well as characteristics. It provides the geochemistry basis to judge the exploration potential in Central Guangxi hollow.