X盆地斜坡带B构造和M构造原油地球化学特征及其地质意义  

Geochemical Characteristics and Geology Connotation of Oils from B Structure and M Structure in Clinoform Zone of X Basin

作　　者：宋换新 文志刚[2] 

机构地区：[1]长江大学期刊社 [2]长江大学地球化学系,湖北荆州434023

出　　处：《石油天然气学报》2011年第12期34-40,171,共7页Journal of Oil and Gas Technology

基　　金：国家油气重大专项(2008ZX05023-001)

摘　　要：利用原油物性、组分、饱和烃色谱及色-质、芳烃色-质等地化分析资料,对X盆地斜坡带B构造和M构造原油的地球化学特征进行了综合研究。结果表明,B构造和M构造原油都为高蜡、低硫,低V/Ni比的典型陆相原油,原油为成熟的轻质原油;饱和烃和芳烃生标资料一致表明,B构造和M构造原油来源于弱氧化性的淡水-微咸水湖盆泥质烃源岩,生烃母质为以陆源高等植物为主的混合型有机质;M构造原油成熟度较B构造原油成熟度高,生标特征具有整体的相似性,认为M构造和B构造原油属于同一石油族群不同石油组群,预测油气主体运聚方向可能为由M构造指向B构造。Based on the geochemistry analysis data of the physical property,component,saturated hydrocarbon GC and GC-MS,aromatic hydrocarbon GC-MS and so on,the oil geochemistry characteristics of B and M Structures were researched synthetically.The Result shows that the oils of B and M Structures are high wax content,low sulfur and low V/Ni continental facies oil type.The oils are light and mature oils.The biomarker data of saturated and aromatic hydrocarbon indicates that the oils come from the week oxidizing fresh-brackish lacustrine facies mudstone.The hydrocarbon generation mater is the mixed type that contents mainly the terrestrial higher plants matter.The grade of the oil maturity of M Structure is higher than that of B Structure and the primary biomarker characteristics are similar.The result indicates that the oils from M and B Structure belong to same oil ethnics and different oil groups.The researcher predicts that the possible direction of oil migration is from M Structure to B Structure.

关 键 词：地球化学特征 生物标志物 成熟度 沉积环境 族群 X盆地 

分 类 号：P618.13[天文地球—矿床学]