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中国石油天然气勘探开发公司于2001年和2002年在缅甸国家油气勘探开发招标中获得4个油气勘探开发区块,总面积3514 km2。由于这些区块勘探程度低,而且区块分布分散,勘探风险大、难度高,为了降低投资风险,争取中方利益最大化,有必要对该区油气地质条件和资源前景进行综合分析。但限于资料和样品,仅选取Salin盆地不同油田不同层位的12个原油样品,在缺乏烃源岩样品的情况下,开展原油生物标志化合物的对比分析。对比结果表明,不同原油生物标志化合物组成特征差异明显,据此将原油分为3类,分别源自3个不同的生烃灶,进而划分出3个可能的含油气系统,并指出不同区块具有不同的勘探目的层系。原油中羽扇烷和双杜松烷的检出,表明原油源自上白垩统或第三系陆相烃源岩。
In 2001 and 2002, CNPC acquired four oil and gas exploration and development blocks with a total area of 3,514 km2 in the national oil and gas exploration and development bidding in Myanmar. Due to the low exploration level of these blocks and the scattered distribution of blocks, the exploration risk is high and the difficulty is high. In order to reduce the investment risk and strive for the maximization of the interests of the Chinese side, it is necessary to make a comprehensive analysis of the geological conditions of oil and gas resources in this area. However, limited to data and samples, only 12 crude oil samples from different layers of different oil fields in the Salin Basin were selected. In the absence of source rock samples, comparative analysis of crude biomarkers was carried out. The results show that there are significant differences in the compositional characteristics of biomarkers of different crude oils. Based on this, the crude oils are divided into three categories, which are derived from three different hydrocarbon generating stations respectively, and then three possible hydrocarbon-bearing systems are identified, With different exploration target strata. The detection of lupine and bi-junbon in crude oil indicated that the crude oil originated from Upper Cretaceous or Tertiary continental source rocks.