巴丹吉林盆地遥感研究试验区油气地球化学勘查

HYDROCARBON GEOCHEMICAL EXPLORATION FROM REMOTE SENSING TEST AREA OF BADAN JARAN BASIN

巴丹吉林沙漠西缘戈壁滩遥感研究表明,北西向线性构造控制该区主要生油层系的沉积展布,北东向线性构造则主要控制烃类的运移和聚集。遥感环形影象异常位于两组断裂的交叉部位,与野外地物波谱数据差比高值区、线性体优益度和中心对称度高值区,以及主要化探综合异常位置基本吻合,推断遥感环形影象异常可能反映了一个隐伏的含油气构造。

Badan Jaran Basin,situated in the west part of Inner Mongolia,is a poorly studiedarea in petroleum geology as its most areas covered by desert.In 1988,we took an areaof 1600 km^2 near Saihantaolai Town on the west margin of Badan Jaran Desert as remotesensing test area.According to its remote sensing anomoly,a near-surface hydrocarbongeological exploration with the net point of 4 km distance was placed and ground objectwave spectrum measurement was also made at the same time.The result shows that thesandy soil samples collected in the region contained methane,ethane,propane,butane andpentane,indicating that there was close relation between the anomalies of geochemical ex-ploration and remote sensing.NW stretching linar structures controlled the Meso-Cenozoicsediments while NE stretching linar structures controlled the hydrocarbon migration andaccumulation.The principal geochemical exploration anomaly was situated at the crosssection of the above mentiomed linar structures;the circular photographic anomaly ofremote sensing fitted to the concentric circular anomalies of ΔC and C_2^+.