巴丹吉林盆地赛汗陶来地区中生界油气地化特征

Geochemical character of mesozoic era in Saihantaonai of Badanjaran Basin

从巴丹吉林盆地麻木乌苏凹陷北部斜坡上 3口探井地质资料揭示来看 ,该区生油岩主要为中生界下白垩统赛乌苏组 (K1s)及上侏罗统额济纳旗组 (J3e)和中侏罗统麻木乌苏组 (J2m)深灰色泥质岩。从地球化学特征研究着手 ,分析有机质丰度、类型和成熟度等各项参数 ,推出沉积环境为深湖 -半深湖还原地球化学相 ,有机质类型为腐泥型和腐植型两类的混和 ,有机质成熟度已达成熟阶段。参照中国陆相生油岩有机母质类型分类的参数标准 ,对该区生油层作定性评价 。

From the geologica information of three wildcats in Saihantaonai area of Badan Jarna Basin Opening out,The oil source rock of the area is mostly atrous argillite of the Saiwusu formation of the lower Cretaceous series,the upper Ejinaqi and the middle Mamuwuwu formation of the Jurassic series of the Mesozoic Era.Researching of geochemical character and analyzing every parameter of organic con-tent,type and maturity,excludes depositional environment is deo-gechemical facies of deep and semi-deep lake;organic type is the mixture of the sapropel and humopel-type;organic maturity gets at maturition phase.Qualitatively evaluates oil source deposity by consulting geochemical index of oil ang gas in other empoldered basin,and prospects the hydrocarbon-bearing of it.