准噶尔盆地南缘上二叠统烃源岩评价

Evaluation on Upper Permian Hydrocarbon Source Rock in the Southern Margin of Junggar Basin

依据所测野外露头样品的TOC、S1+S2、干酪根的镜检、碳同位素特征及热解参数、Ro、孢粉颜色、Tmax、生物标志化合物特征,对准噶尔盆地南缘上二叠统烃源岩进行了评价。盆地南缘上二叠统芦草沟组与红雁池组泥岩有机质丰度高,残余有机碳丰度含量平均值分别为3.85%、4.90%。富含腐泥组,有机质类型为Ⅱ1型,其热演化处于成熟阶段,为好烃源岩,表明该区具有良好的油气勘探前景。

Appling to TOC, S1+S2, microscopic examination, the carbon isotope of kerogen, Ro%, Rock-eval, Tmax biomarkers of field samples, the Permian source rocks in the southern margin of Junggar Basin were evaluated. Hydrocarbon source rocks of Lucaogou Formation and Hongyanchi organic mass of upper Permian have high abundances, the mean value of TOC are 3.85%, 4.90%, respectively, fully contain sapropel composition. the type of organic matter is II1, the thermal evolution degree is at mature stage. The analytical data show that the southern margin of Junggar Basin possess better petroleum exploration prospects.