牛心坨油田中生界原油地球化学特征及油源对比  

Geochemical Characteristics and Oil Source Correlation of Mesozoic Crude Oil in Niuxintuo Oilfield

作　　者：王杨[1] WANG Yang(Liaohe Oilfield of CNPC,Panjin 124010,Liaoning,China)

机构地区：[1]中国石油辽河油田分公司,辽宁盘锦124010

出　　处：《承德石油高等专科学校学报》2023年第6期25-30,48,共7页Journal of Chengde Petroleum College

摘　　要：牛心坨油田坨32块中生界油层的油源来自新生界还是古生界关系到勘探方向的确定,除常规有机地化指标分析外,联合色谱、质谱、中性含氮化合物、碳同位素δ^(13)C等方法评价坨32块中生界、古生界及沙四段生油潜力,认为该地区烃源岩有机质丰度以S_(4)段为最好,母质类型以Ⅱ^(1)~Ⅱ^(2)型为主,成熟度偏低,属于低熟到成熟演化阶段,沙四段及太古界的油源来自牛心坨凹陷沉降中心沙四段烃源岩,而中生界油层属于自生自储,但油源有限。Whether the oil source of Mesozoic oil layer in Tuo 32 block of Niuxintwo Oilfield is from the Cenozoic or Paleozoic determines the direction of exploration.In addition to analysis of conventional organic geochemical indicators,the combination of methods like chromatography,mass spectrometry,neutral nitrogen compounds and carbon isotopes δ^(13)C are used to evaluate the oil generation potential of Mesozoic,Paleozoic and ES_(4) in Tuo 32 block.It is considered that the organic matter abundance of the source rocks in S 4 area is the best,and the parent material type is mainly type Ⅱ_(1)~Ⅱ_(2).The maturity is low,belonging to the low mature to mature evolution stage.The oil source of ES 4 and Archaeozoic is from the source rock of ES 4 in the settlement center of Niuxintuo Depression,while the Mesozoic oil layer belongs to self generation and self storage,but the oil source is limited.

关 键 词：烃源岩 干酪根 地球化学特征 生物标志物 油源对比 

分 类 号：P618.130.2[天文地球—矿床学]