石油与天然气地质 ›› 2010, Vol. 31 ›› Issue (1): 84-90.doi: 10.11743/ogg20100114

• 外围探区 • 上一篇    下一篇

塔里木盆地麦盖提地区石炭系油藏地球化学特征

邵志兵1,2, 吕海涛1, 耿锋1   

  1. 1. 中国石油化工股份有限公司, 西北油田分公司, 石油勘探开发研究院, 新疆, 乌鲁木齐, 830011;
    2. 中国石油化工股份有限公司, 石油勘探开发研究院, 无锡石油地质研究所, 江苏, 无锡, 214151
  • 收稿日期:2009-09-27 出版日期:2010-02-25 发布日期:2012-01-16

Geochemical characteristics of the Carboniferous oil pools in Maigaiti area, the Tarim Basin

Shao Zhibing1,2, L? Haitao1, Geng Feng1   

  1. 1. Research Institute of Petroleum Exploration and Development, SINOPEC Northwest Company, Urumqi, Xinjiang 830011, China;
    2. Wuxi Institute of Petroleum Geology, SINOPEC Petroleum Exploration & Production Research Institute, Wuxi, Jiangsu 214151, China
  • Received:2009-09-27 Online:2010-02-25 Published:2012-01-16

PDF (PC)

976

被引次数

51

摘要：

对塔里木盆地麦盖提地区石炭系油藏中油气地球化学特征及流体包裹体分析表明,天然气主要是高-过成熟的海相腐泥型气,巴什托地区天然气主要是高成熟的油田伴生气,和田河气田气则是过成熟的干酪根裂解气与原油裂解气的混合。巴什托地区原油主要是演化程度高的低硫、低蜡的轻质油;原油至少有两期充注,保存条件较好;油-源对比显示原油主要来源于寒武系,而与石炭系烃源岩无成因联系。巴什托油气藏主要有两大成藏期:一期是海西晚期,油气藏遭受一定程度的破坏;另一期是喜马拉雅期,以形成次生凝析油气为主。

关键词: 碳同位素, 包裹体, 成藏期次, 地球化学, 石炭系油气藏, 塔里木盆地

Abstract:

Analyses of geochemical characteristics and fluid inclusions of the Carboniferous oil pools in the Maigaiti area in Tarim Basin reveal that the natural gas here is dominated by marine sapropel-type gas with high-over maturity.In the Bashituo area,associated gas with high maturity is predominant,while in the Hetianhe gas field,a mixture of over-mature kerogen-cracking gas and crude-cracking gas occurs.Crude oil in the Bashituo area is dominated by highly-mature light oil with low content of sulfur and wax.Oil charging occurs at least in two stages and the preservation conditions are good.Oil-source correlation shows that the crude oil mainly originated from the Cambrian and has no genetic relations with the Carboniferous source rocks.In the Bashituo area,hydrocarbon pooling occurred mainly in two periods:one is the Late Hercynian when the oil and gas pools were destructed to some degree,and the other is the Himalayan when secondary condensate oil and gas were predominant.

Key words: carbon isotope, fluid inclusion, pooling period, geochemistry, Carboniferous oil and gas pool, Tarim Basin

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