Currently, one of the most effective methods of personnel training for the oil and gas industry is training on computer simulators. Studies show that most often emergencies occur in small areas of large production facilities, which indicates the existence of a problem with the possibility of training and development of simulators for basic objects of complex production chains. Nowadays, there are a lot of technical and technological solutions in the field of simulators, however, the segment of simulators of basic units and equipment of oil and gas industry objects is practically absent. In order to develop computer simulators that fully correspond to real objects, it is necessary to build adequate mathematical models. Within the framework of this research, the development of mathematical and structural models of the basic object of the oil and gas industry has been performed.