柴达木盆地葫芦山构造的多参数化探检测

MULTI-PARAMETER DETECTION OF GEOCHEMICAL EXPLORATION IN HULUSHAN STRUCTURE,QAIDAM BASIN

采用多参数油气地化指标综合分析 ,柴达木盆地葫芦山构造可划分出 3个化探异常区 :Ⅰ号异常区位于葫深 1井周围 ,面积约 45km2 ,游离烃、酸解烃及ΔC均有异常 ,且叠置吻合性好 ;Ⅱ号异常区位于构造北部 ,主要为游离烃异常 ;Ⅲ号异常区位于测区的东南角 ,规模较小 ,除游离烃甲烷外 ,其他异常均较弱。根据游离烃组分及碳同位素组成分析 。

According to the analysis of multi parameter hydrocarbon geochemical indicators,Hulushan structure in Qaidam Basin could be divided into 3 geochemical abnormal zones:the first abnormal zone is around Husheng 1 Well with an area of 45 km\+2.Its free hydrocarbon,acid degraded hydrocarbon and ΔC are all abnormal and coincide with each other;the second abnormal zone is in the north margin of the structure mainly with free hydrocarbon anomaly;the third abnormal zone in the southeast corner of the structure is small with free methane anomaly.Based on carbon isotopic compositions,the surface geochemical anomalies of the structure should be derived from vertical microseepage of pyrolysed hydrocarbon in deep stratum.