Two-dimensional (2D) graphene characterized by a unique electrical properties such as high mobility of electrons and ballistic transport at room temperature. In this research, graphene was used, which is considered a "miracle material" to build new technologies because of its strong and flexible structure, its electrical properties and chemical resistance. It is also characterized by its superconductivity and is made of only one carbon atom, and because of these unique specifications it is used as a sensor for gas in the oil industry due to the large surface area of graphene nano-ribbon (GNR). The properties of electronic transport, morphological and morphological of GNR and doped with B/N(GNR-BN) were studied using GOLLUM. The results showed that acceptable relaxation of graphene sheets was obtained as a result of useing B3LYP-DFT at the LDA/SZ DFT at SIESTA - trunk - 462 of program. The electrical conductivity of the uncontaminated graphene is greater than the doped and the highest value was 4.47 ?s. The thermal conductivity, I-V characteristic and transmission were also studied. The graphene sheets were prepared using chemical vapor deposition technique and the study of structural and morphplogy properties of the samples through SEM images. Therefore, the uses of gas sensors are many and different, starting from homes and ending with giant plants, nuclear reactors and oil industries.