Remote sensing information is economical in petroleum and natural gas survey. This paper introduces two remote sousing methods to look for hydrocarbon reservoir. 1. The hydrocarbon micro-seepage information was extracted from TMdata with the spectra and image processing to detect petroleum reservoir. The application results in North China were presented in this paper. 2. Application of residual index of linear bodies to detect the local structure of petroleum reservoir. This method is special to study the buried local structures which are deep and hard to find because of weak response. The residual index analysis method of geographic, geomorphic and geologic linear bodies was used to detect the local structures of petroleum reservoir. This paper introduced the application results in carbonatite area.