Oil and gas reservoir has long-term suffering from hydrocarbon seepages including macroseepages and microseepages. The presence of seepages documents the first element of a hydrocarbon system and could therefore reduce exploration risks.To investigate hydrocarbon seepage-induced anomalies in the Kuqa depression basin, southern Tian Shan Mountain, west  China, spectroscopy and ASTER multispectral remote sensing 

were used. Geochemical and mineralogical analyses of selected  samples using Scanning Electron Microscope with Energy  Dispersive Spectrometer (SEM/EDS), thin section study and Xray diffraction (XRD) were also conducted to determine the  relationship between mineral composition, spectral features and  surface changes.