东营凹陷草桥油田生物降解原油沥青质钌离子催化氧化研究——生标分布及地质意义

RUTHENIUM-IONS-CATALYZED OXIDATION OF AN ASPHALTENE OF A BIODGRADED OIL FROM CAOQIAO OIILFIELD, DONGYING DEPRESSION, BOHAIWAN BASIN-THE DISTRIBUTION OF BIOMARKERS AND THE GEOLOGICAL SIGNIFICANCE

马安来 张水昌 张大江 金之钧 陈致林

Ma Anlai Zhang Shuichang Zhang Dajiang Jin Zhijun Chen Zhilin

中国石化石油勘探开发研究院, 北京, 100083 2. 石油人学, 北京, 102200 3. 中国石油勘探开发研究院, 北京, 100083 4. 中国石化胜利油田地质科学研究院, , 山东, 东营, 257015

Research Institute of Petroleum Exploration and Production, SINOPEC, Beijing 100083, China 2. China University of Petroleum, Beijing 102200, China 3. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China 4. Research Institute of Geological Sciences, Shengli Oilfield, SINOPEC, Dongying, Shandong 257015, China

运用钌离子催化氧化技术(RICO)研究了渤海湾盆地东营凹陷草桥油田生物降解原油沥青质.原油沥青质RICO产物主要包括一元酸、二元酸、三环萜烷酸、藿烷酸、伽马蜡烷酸、孕甾烷酸、甾烷酸等,键合在沥青质芳核结构中的生物标志物以特定碳位与沥青质结合.草桥生物降解原油沥青质RICO产物中具有较高的伽马蜡烷酸/C30藿烷酸比值,具有完整的4-甲基、4,4-二甲基甾烷酸系列,表明原油为沙四段、沙三段的混源油;生标酸异构化参数低表明原油成熟度不高.沥青质钌离子催化氧化技术对于强烈生物降解原油的油-油对比、油-源对比提供了一种新的途径.

The asphaltene of a biodegraded oil from Caoqiao oilfield,Dongying depression,Bohaiwan Basin has been investigated by ruthenium-ions-catalyzed oxidation technique (RICO).The products of asphaltene RICO included n-alkanoic acids,dialkanoic acids,tricyclic terpernoid acids,hopanoic acids,gammacerane carboxylic acids,pregnanoic acids,sterane carboxylic acids and so on.The biomarkers were bounded on the asphaltene with specific carbon position respectively.The high ratios of gammacerane carboxylic acids to C30 hopanoic carboxylic acids and a complete series of 4-methyl,4,4-dimethyl steranoic acids indicated that the oil is a mixing oil originated from Es4 and Es3 source rock.The low isomerization of the biomarker acids showed that the maturity of the oil is low.Ruthenium-ions-catalyzed oxidation of the asphaltene provided a new pathway for the oil-oil correlation and oil-source correlation of heavily biodegraded oil.

国家九五重点科技攻关项目(99-111-01-03);国家重点基础研究发展规划项目(G19990433)

https://doi.org/10.11781/sysydz200503288